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Pickering T, Wright B, MacMahon C. Fatigued or bored? Investigating the effect of different types of mental fatigue on 3 km running performance. PSYCHOLOGY OF SPORT AND EXERCISE 2024; 74:102687. [PMID: 38897333 DOI: 10.1016/j.psychsport.2024.102687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 05/20/2024] [Accepted: 06/14/2024] [Indexed: 06/21/2024]
Abstract
Mental fatigue has been highly cited as having a negative impact on endurance performance. Few, however, have investigated whether different types of mental fatigue, namely active and passive fatigue, might affect endurance performance differently. This study used a repeated-measures design where 11 participants completed a 3 km run after three 32-min conditions: an actively fatiguing task (Task-load Dual-back; TloadDback); a passively fatiguing task (Mackworth Clock); and a control task (Documentary). Subjective ratings and performance on a second task (Flanker task) were taken before and after the 32-min tasks, while ratings of perceived effort, motivation and workload were taken during the 3 km run. Results showed that both fatigue conditions were mentally fatiguing, with the TloadDback rated as more demanding and the Mackworth Clock more boring and less motivating. Performance on subsequent tasks showed different effects: the TloadDback condition had the slowest responses on the post-test Flanker task, while the Mackworth Clock condition had the slowest completion time on the 3 km run, though this difference in completion times was non-significant. These results suggest that different cognitive tasks lead to different types of mental fatigue, which can lead to different outcomes on subsequent cognitive tasks but non-significant differences on subsequent physical tasks. This study highlights that to understand the influence of mental fatigue on physical performance, it is important to understand the cognitive tasks used and how different cognitive and physical tasks interact. Future work should examine whether performance outcomes in other areas commonly affected by mental fatigue, like technical and tactical sporting skills, are affected differently by active and passive fatigue.
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Affiliation(s)
- Todd Pickering
- Department of Sport, Exercise and Nutrition Sciences, La Trobe University, Australia.
| | - Bradley Wright
- Department of Psychology, Counselling and Therapy, La Trobe University, Australia
| | - Clare MacMahon
- Department of Sport, Exercise and Nutrition Sciences, La Trobe University, Australia
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2
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Ma J, Li H, Anwer S, Umer W, Antwi-Afari MF, Xiao EB. Evaluation of sweat-based biomarkers using wearable biosensors for monitoring stress and fatigue: a systematic review. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2024; 30:677-703. [PMID: 38581242 DOI: 10.1080/10803548.2024.2330242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024]
Abstract
Objectives. This systematic review aims to report the evaluation of wearable biosensors for the real-time measurement of stress and fatigue using sweat biomarkers. Methods. A thorough search of the literature was carried out in databases such as PubMed, Web of Science and IEEE. A three-step approach for selecting research articles was developed and implemented. Results. Based on a systematic search, a total of 17 articles were included in this review. Lactate, cortisol, glucose and electrolytes were identified as sweat biomarkers. Sweat-based biomarkers are frequently monitored in real time using potentiometric and amperometric biosensors. Wearable biosensors such as an epidermal patch or a sweatband have been widely validated in scientific literature. Conclusions. Sweat is an important biofluid for monitoring general health, including stress and fatigue. It is becoming increasingly common to use biosensors that can measure a wide range of sweat biomarkers to detect fatigue during high-intensity work. Even though wearable biosensors have been validated for monitoring various sweat biomarkers, such biomarkers can only be used to assess stress and fatigue indirectly. In general, this study may serve as a driving force for academics and practitioners to broaden the use of wearable biosensors for the real-time assessment of stress and fatigue.
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Affiliation(s)
- Jie Ma
- Department of Building and Real Estate, Hong Kong Polytechnic University, People's Republic of China
| | - Heng Li
- Department of Building and Real Estate, Hong Kong Polytechnic University, People's Republic of China
| | - Shahnawaz Anwer
- Department of Building and Real Estate, Hong Kong Polytechnic University, People's Republic of China
| | - Waleed Umer
- Department of Mechanical and Construction Engineering, Northumbria University, UK
| | | | - Eric Bo Xiao
- Department of Building and Real Estate, Hong Kong Polytechnic University, People's Republic of China
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3
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Lorcery A, André N, Benraïss A, Pingault M, Mirabelli F, Audiffren M. Engagement of mental effort in response to mental fatigue: A psychophysiological analysis. PSYCHOLOGY OF SPORT AND EXERCISE 2024; 74:102660. [PMID: 38734281 DOI: 10.1016/j.psychsport.2024.102660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 05/06/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
Acute mental fatigue, characterized by a transient decline in cognitive efficiency during or following prolonged cognitive tasks, can be managed through adaptive effort deployment. In response to mental fatigue, individuals can employ two main behavioral patterns: engaging a compensatory effort to limit performance decrements, or disengaging effort, leading to performance deterioration. This study investigated the behavioral pattern used by participants in mental fatigue conditions. Fifty participants underwent a sequential-task protocol with counterbalanced sessions who took place in two separate sessions: a 30-min incongruent Stroop task (fatiguing session) or a 30-min documentary viewing task (control session), followed by a time-to-exhaustion (TTE) handgrip task at 13 % of maximal voluntary contraction. Psychophysiological measures included the preejection period, heart rate variability, blood pressure, and respiration. Behavioral results showed deteriorated TTE handgrip performance after the Stroop task compared to after the documentary viewing task. During the Stroop task participants were more conservative and prioritized accuracy over speed. Self-reported fatigue was greater after the Stroop task. Psychophysiological data revealed a gradual decrease in sympathetic activity over time in both tasks, with the Stroop task showing a more pronounced decrease. Taken together, these findings suggest a disengagement of effort for a large proportion of participants (49 %) that could be partly attributed to a habituation to the demands of the Stroop task. This study illustrates the interplay of behavioral patterns of effort investment in the context of mental fatigue and underscores the role of disengagement as a dominant response to this phenomenon among healthy participants.
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Affiliation(s)
- Alison Lorcery
- Research Centre on Cognition and Learning, University of Poitiers, CNRS, France.
| | - Nathalie André
- Research Centre on Cognition and Learning, University of Poitiers, CNRS, France
| | - Abdelrhani Benraïss
- Research Centre on Cognition and Learning, University of Poitiers, CNRS, France
| | - Maxime Pingault
- Research Centre on Cognition and Learning, University of Poitiers, CNRS, France
| | - Francesco Mirabelli
- Health and Physical Activity Faculty, Università Degli Studi di Roma "Foro Italico", Rome, Italy
| | - Michel Audiffren
- Research Centre on Cognition and Learning, University of Poitiers, CNRS, France
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Pauletti C, Mannarelli D, Pauri F, Petritis A, Maffucci A, Currà A, Fattapposta F. The role of fatigue in attentional processing in multiple sclerosis: data from event-related potentials. J Neural Transm (Vienna) 2024:10.1007/s00702-024-02827-6. [PMID: 39196370 DOI: 10.1007/s00702-024-02827-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Accepted: 08/19/2024] [Indexed: 08/29/2024]
Abstract
Fatigue is an extremely common symptom in in people with multiple sclerosis (PwMS) and has a severe impact on quality of life. The purpose of the present study was to verify whether fatigue in PwMS is associated with a selective covert attention impairment, as measured by event-related potentials and to assess whether it is more associated with an impairment of top-down or bottom-up attentional control. Twenty-two PwMS and fatigue-MSF, 17 without fatigue-MSnF and 35 healthy volunteers underwent a three-stimulus P300 novelty task that elicits both the P3a and the P3b components. P3b latency was comparable between groups, but PwMS, independently from the presence of fatigue displayed significantly greater P3b amplitudes. P3a latency was significantly prolonged in MSF alone, while P3a amplitude in MSnF group was greater than controls. MSF were able to categorize the task-relevant target stimulus but the orienting response to a novel salient stimulus was delayed, indicating an impairment in bottom-up attentional control mechanism related to ventral attention network. Fatigue is selectively associated with a covert attentional deficit related to the ability to reallocate attentional resources to salient stimuli, a crucial function of adaptive decision-making behaviour.
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Affiliation(s)
- Caterina Pauletti
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, 00185, Italy.
| | - Daniela Mannarelli
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, 00185, Italy
| | - Flavia Pauri
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, 00185, Italy
| | - Alessia Petritis
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, 00185, Italy
| | - Andrea Maffucci
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, 00185, Italy
| | - Antonio Currà
- Academic Neurology Unit, Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Terracina, 04019, Italy
| | - Francesco Fattapposta
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, 00185, Italy
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Staiano W, Díaz-García J, García-Calvo T, Ring C. Brain endurance training improves soccer-specific technical skills and cognitive performance in fatigued professional soccer players. J Sci Med Sport 2024:S1440-2440(24)00488-2. [PMID: 39227203 DOI: 10.1016/j.jsams.2024.08.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 08/12/2024] [Accepted: 08/15/2024] [Indexed: 09/05/2024]
Abstract
OBJECTIVES Brain Endurance Training (BET) - the addition of mentally fatiguing cognitive tasks to standard physical training - could improve performance in soccer. We tested whether BET, with cognitive tasks intermixed with physical training activities, improved players' cognitive and soccer-specific technical performance compared to physical training alone when fresh and fatigued. DESIGN The study employed a pre/training/midtest/training/posttest design. METHODS 31 professional male soccer players were randomly assigned to BET or control groups and completed 18 physical training sessions over 6 weeks. In between the physical training activities, the BET group completed demanding cognitive tasks, whereas the control group rested. Players completed the Loughborough soccer passing (LSPT) and shooting test (LSST) before and after completing a 30-min Stroop task. A brief psychomotor vigilance test (PVT-B), a visual analog rating of mental fatigue (MF-VAS), and rating of perceived exertion (RPE) were measured during testing and training. RESULTS During testing, the 30-min Stroop task elicited a state of MF, confirmed by higher subjective ratings (P < .01). Compared to pre-testing, at mid- and post-testing, the BET group improved passing (all P < .01), shooting (all P < .01), and PVT-B performance (all P < .01) when tested after (fatigued) but not before (fresh) the Stroop task, whereas the control group did not change performance either way. During training the BET group reported higher MF (P < .01) and exhibited slower PVT-B responses (P < .01) compared to control. CONCLUSIONS Intermixed BET was more effective than physical training alone at improving cognitive and soccer-specific technical performance of professional soccer players when fatigued.
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Affiliation(s)
- Walter Staiano
- Department of Physical Education and Sport, University of Valencia, Spain; Department of Psychology, Biological and Cognitive Psychology, University of Southern Denmark, Denmark. https://twitter.com/WalterStaiano
| | - Jesús Díaz-García
- Faculty of Sport Sciences, University of Extremadura, Spain. https://twitter.com/DiazGarciaJesus
| | - Tomás García-Calvo
- Faculty of Sport Sciences, University of Extremadura, Spain. https://twitter.com/tgarciacalvo
| | - Christopher Ring
- School of Sport, Exercise & Rehabilitation Sciences, University of Birmingham, UK.
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Mortimer H, Dallaway N, Ring C. Effects of isolated and combined mental and physical fatigue on motor skill and endurance exercise performance. PSYCHOLOGY OF SPORT AND EXERCISE 2024; 75:102720. [PMID: 39181418 DOI: 10.1016/j.psychsport.2024.102720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 08/18/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024]
Abstract
BACKGROUND Mental fatigue, elicited by cognitive demands, can impair sport and exercise performance. The effects of isolated mental fatigue on performance are well documented but few studies have explored the effects of combined mental and physical fatigue on skilled motor and endurance exercise performance. OBJECTIVE This study explored the effects of isolated mental, isolated physical, and combined (mental plus physical) fatigue on skill and exercise task performance. METHOD 164 athletes were randomly assigned to 1 of 4 groups: mental fatigue, physical fatigue, combined fatigue, control (no fatigue). Mental fatigue was induced by a 15-min time-load dual-back cognitive task. Physical fatigue was induced by a 90-s burpee exercise task. Next, all participants completed a throwing skill task and performed burpee exercises to failure. Objective (brief Psychomotor Vigilance Task, PVT-B) and subjective (self-report) measures of mental fatigue and Ratings of Perceived Exertion were obtained throughout. RESULTS The mental fatigue and combined fatigue groups performed the worst on both the throwing and burpee tasks compared with the physical fatigue and control groups. The former reported higher mental fatigue throughout and had worse response accuracy and variation on the end-of-session PVT-B task. The combined fatigue group performed better than the mental fatigue group on the throwing and burpee tasks. CONCLUSION A demanding cognitive task induced a state of mental fatigue and impaired skill and endurance performance. Mental fatigue alone was more detrimental than combined fatigue to skill and endurance performance, suggesting that the physical activity manipulation reduced the negative effects of mental fatigue on performance.
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Affiliation(s)
- Hannah Mortimer
- School of Sport, Exercise & Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Neil Dallaway
- School of Sport, Exercise & Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Christopher Ring
- School of Sport, Exercise & Rehabilitation Sciences, University of Birmingham, Birmingham, UK.
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Staiano W, Romagnoli M, Salazar Bonet LR, Ferri-Caruana A. Adaptive cognitive tasks for mental fatigue: An innovative paradigm for cognitive loading in human performance. J Sci Med Sport 2024:S1440-2440(24)00484-5. [PMID: 39209690 DOI: 10.1016/j.jsams.2024.08.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024]
Abstract
OBJECTIVES Mental fatigue (MF) can impair cognitive and physical performance in sport. We tested the hypothesis that a shorter adaptive Time Load Dual Back (TLDB) task induces MF faster than a longer Stroop; and subsequently impairs cognitive and intermittent running performance. DESIGN This study employed a randomized within-participant design. METHODS 25 trained individuals performed a Yo-Yo test after one of four experimental conditions (30-min Stroop, 20-min and 10-min TLDB tasks, and active control). Cognitive performance was assessed using the Psychomotor Vigilance Task (PVT) before and after the experimental conditions. Measures of mood, workload, MF, RPE, heart rate (HR), heart rate variability (HRV) and blood lactate were collected. ANOVAs determined the effect of the 4 conditions. RESULTS Stroop and 20-min TLDB conditions impaired running performance similarly (p = .015), while no differences are reported for 10-min TLDB and Control. No significant differences in physiological parameters were reported during the Yo-Yo test although RPE was significantly higher in the Stroop and 20-min TLDB conditions (p = .014). Stroop and both TLDBs conditions impaired PVT's cognitive performance (p = .029), MF (p = .012), mental demand (p < .001), HR (p = .021) and HRV (p = .033); with 20-min TLDB task having the higher significant impact. Mood alterations were similar between Stroop and TLDB conditions. CONCLUSIONS Intermittent running (Yo-Yo) and cognitive (PVT) performances, and subjective ratings were impaired by 30-min Stroop and 20-min TLDB tasks; while 10-min TLDB did not to impair performance. Shorter adaptive modes seem to be more effective in inducing MF and could have relevant clinical applications to assess conditions such as traumatic brain injury and concussion.
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Affiliation(s)
- Walter Staiano
- Department of Physical Education and Sport, University of Valencia, Valencia, Spain; Department of Psychology, Biological and Cognitive Psychology, University of Southern Denmark, Odense, Denmark. https://twitter.com/walterstaiano
| | - Marco Romagnoli
- Department of Physical Education and Sport, University of Valencia, Valencia, Spain
| | | | - Ana Ferri-Caruana
- Department of Physical Education and Sport, University of Valencia, Valencia, Spain
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Tang WK, Hui ESK, Leung WH. Cortical-striatal network functional connectivity markers in poststroke fatigue: a single-centre fMRI case-control study protocol. BMJ Open 2024; 14:e081800. [PMID: 39142668 PMCID: PMC11331996 DOI: 10.1136/bmjopen-2023-081800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 07/26/2024] [Indexed: 08/16/2024] Open
Abstract
INTRODUCTION Structural and functional abnormalities in the cortical-striatal network (CSN) are hypothesised to play a key role in the pathogenesis of neurological disease-associated fatigue. Some small-scale functional MRI (fMRI) studies have suggested that poststroke fatigue (PSF) is related to focal functional connectivity (FC) changes. To date, there has been no published large-scale fMRI study on PSF. This planned study will examine the role of the CSN FC on PSF. METHODS AND ANALYSIS The planned study will be a prospective cohort study conducted at the Neurology Unit of the Prince of Wales Hospital. We will recruit 738 participants. The project duration will be 36 months. A psychiatrist will administer the Fatigue Severity Scale (FSS) at 3 months (P1) following the index stroke. PSF is defined as an FSS Score≥4.0. PSF severity will be defined by the FSS total score at P1. Participants with PSF at P1 will undergo two follow-up assessments at 9 (P2) and 15 (P3) months post stroke. PSF remission at P2 or P3 will be defined as a 50% reduction in FSS. Participants will undergo MRI examinations within 2 weeks of the 3-month poststroke assessment. Structural MRI, resting-state fMRI and diffusion tensor imaging will be performed. FC, structural connectivity, infarcts, cerebral microbleeds and white matter hyperintensities will be analysed. For the primary analysis, the effect of PSF on the FC, structural connectivity and diffusion metrics of CSN of stroke survivors, voxel-wise two-sample t-tests will be performed with FDR correction for multiple comparison and significance level set at p<0.05. ETHICS AND DISSEMINATION Ethical approval was obtained from the Joint Chinese University of Hong Kong-New Territories East Cluster clinical research ethics committee. The study findings will be shared through peer-reviewed journal publications, national and international conferences and social media platforms.
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Affiliation(s)
- Wai Kwong Tang
- Department of Psychiatry, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Edward Sai Kam Hui
- Department of Psychiatry, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Wai H Leung
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
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Pauletti C, Mannarelli D, Fattapposta F. Overt and Covert Effects of Mental Fatigue on Attention Networks: Evidence from Event-Related Potentials during the Attention Network Test. Brain Sci 2024; 14:803. [PMID: 39199495 PMCID: PMC11352345 DOI: 10.3390/brainsci14080803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/01/2024] Open
Abstract
Mental fatigue is a variation in the psychophysiological state that subjects encounter during or after prolonged cognitive activity periods, affecting top-down attention and cognitive control. The present study aimed to investigate the effects of mental fatigue on attention in the context of the three attention networks according to the Posnerian model (alerting, orienting, and executive networks) by combining the Attentional Network Test (ANT) and event-related potentials technique. Thirty healthy subjects were enrolled in the study. A continuous arithmetic task lasting one hour induced mental fatigue, and EEG recordings were conducted before and after the task while subjects were performing the ANT. The efficiencies of three networks were comparable between groups, while RTs shortened only in the control group and the accuracy related to the alerting and conflict networks declined only after mental effort. Mental fatigue reduced N1 amplitude during alerting network engagement and p3 amplitude during orienting. It also reduced N2 and P3 amplitude during the conflict, particularly the incongruent target-locked response. These findings underscore the covert effects of mental fatigue on attention, suggesting that even in healthy young subjects, compensatory mechanisms may maintain adequate overt performances, but fatigue still has a detrimental effect on top-down attentional mechanisms.
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Affiliation(s)
- Caterina Pauletti
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell’Università 30, 00185 Rome, Italy; (D.M.); (F.F.)
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10
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Faria LO, Frois T, Fortes LDS, Bertola L, Albuquerque MR. Evaluating the Stroop Test With Older Adults: Construct Validity, Short Term Test-Retest Reliability, and Sensitivity to Mental Fatigue. Percept Mot Skills 2024; 131:1120-1144. [PMID: 38739018 DOI: 10.1177/00315125241253425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
We conducted two studies to evaluate the construct validity, short term test-retest reliability, and sensitivity to mental fatigue of the Stroop task when used with older adults. In Study 1, 40 participants visited our lab on two separate days. On the first visit, they took five screening scales, and we measured their height and body mass. On the second visit, they completed the Stroop task twice with a 30-minute interval between assessments. In Study 2, 15 different participants took a 30-minute Flanker/Reverse Flanker task during the interval between the two administrations of the Stroop tasks and they gave subjective ratings of their mental fatigue on the Visual Analogue Scale (VAS) prior to taking either of the Stroop tasks. In Study 1, participants showed a ceiling effect on the Stroop accuracy measure, there was strong concurrent validity for the Stroop with significant score differences between the Stroop's congruent and incongruent conditions (p < .001), and there was excellent response time reliability (ICC = 0.926) on day two when participants took the Stroop twice within a 30-minute inter-test interval. However, there were significant test-retest performance differences with respect to cognitive inhibition (p < .001). In Study 2, mental fatigue from the Flanker/Reverse Flanker test resulted in a significantly worse second Stroop performance (p = .045). We concluded that the Stroop task demonstrated strong concurrent validity and response time reliability among older adults, but it showed sensitivity to mental fatigue, and repeated administrations within the short 30-minute test-retest interval revealed that the most important Stroop measure (cognitive inhibition) was unreliable. We discuss the implications of these findings.
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Affiliation(s)
- Larissa Oliveira Faria
- Neurosciences of Physical Activity and Sports Research Group, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, Brazil
| | - Thais Frois
- Neurosciences of Physical Activity and Sports Research Group, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, Brazil
| | | | - Laiss Bertola
- Departamento de Psiquiatria e Psicologia Médica, Escola Paulista de Medicina, UNIFESP, Sao Paulo, Brazil
| | - Maicon Rodrigues Albuquerque
- Neurosciences of Physical Activity and Sports Research Group, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, Brazil
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11
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Gonzalez MP, Brown DMY, Swafford IM, Summerville B, Seidi M, Hajiaghamemar M, Dorgo S. The Effects of Mental Fatigue on Anaerobic Power and Power Endurance Performance. Sports (Basel) 2024; 12:192. [PMID: 39058083 PMCID: PMC11280764 DOI: 10.3390/sports12070192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Mental fatigue has been studied extensively in relation to its impact on aerobic-, strength-, and motor-based tasks, but anaerobic power-based tasks have received limited attention. Interdisciplinary research investigating the underlying mechanisms by which mental fatigue influences physical performance has been called for. In two studies, the effects of mental fatigue on maximal power jump and endurance jump performance as well as kinetics and kinematics during jump performance were examined. Samples of collegiate volleyball players (Study 1; N = 14) and recreationally active students (Study 2; N = 27) completed two 30 min experimental manipulations (high vs. low cognitive control exertion) before performing three maximal power squat jumps followed by 15 repeated countermovement jumps, with measurements of kinetics and kinematics. For Study 1, the maximal power performance was significantly lower under a mentally fatigued condition, but no differences were observed for repeated jump performance, which may have been attributable to alterations in jump mechanics. For Study 2, no between-condition differences were observed for the maximal power performance, although repeated jump performance was significantly lower under a mentally fatigued condition. Collectively, these findings suggest that the impacts of mental fatigue on power-based performance tasks may depend on the task demands as well as the training status of the individual.
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Affiliation(s)
- Matthew P. Gonzalez
- Department of Kinesiology, The University of Texas at San Antonio, San Antonio, TX 78249, USA;
| | - Denver M. Y. Brown
- Department of Psychology, The University of Texas at San Antonio, San Antonio, TX 78249, USA; (D.M.Y.B.); (I.M.S.); (B.S.)
| | - Isabella M. Swafford
- Department of Psychology, The University of Texas at San Antonio, San Antonio, TX 78249, USA; (D.M.Y.B.); (I.M.S.); (B.S.)
| | - Bryce Summerville
- Department of Psychology, The University of Texas at San Antonio, San Antonio, TX 78249, USA; (D.M.Y.B.); (I.M.S.); (B.S.)
| | - Morteza Seidi
- Department of Mechanical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA;
| | - Marzieh Hajiaghamemar
- Department of Biomedical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA;
| | - Sandor Dorgo
- Department of Kinesiology, The University of Texas at San Antonio, San Antonio, TX 78249, USA;
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12
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De Wachter J, Roose M, Proost M, Habay J, Verstraelen M, De Bock S, De Pauw K, Meeusen R, Van Cutsem J, Roelands B. Prefrontal cortex oxygenation during a mentally fatiguing task in normoxia and hypoxia. Exp Brain Res 2024; 242:1807-1819. [PMID: 38839618 PMCID: PMC11208267 DOI: 10.1007/s00221-024-06867-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 05/28/2024] [Indexed: 06/07/2024]
Abstract
Mental fatigue (MF) and hypoxia impair cognitive performance through changes in brain hemodynamics. We want to elucidate the role of prefrontal cortex (PFC)-oxygenation in MF. Twelve participants (22.9 ± 3.5 years) completed four experimental trials, (1) MF in (normobaric) hypoxia (MF_HYP) (3.800 m; 13.5%O2), (2) MF in normoxia (MF_NOR) (98 m; 21.0%O2), (3) Control task in HYP (CON_HYP), (4) Control in NOR (CON_NOR). Participants performed a 2-back task, Digit Symbol Substitution test and Psychomotor Vigilance task before and after a 60-min Stroop task or an emotionally neutral documentary. Brain oxygenation was measured through functional Near Infrared Spectroscopy. Subjective feelings of MF and physiological measures (heart rate, oxygen saturation, blood glucose and hemoglobin) were recorded. The Stroop task resulted in increased subjective feelings of MF compared to watching the documentary. 2-back accuracy was lower post task compared to pre task in MF_NOR and CON_NOR, while no differences were found in the other cognitive tasks. The fraction of inspired oxygen did not impact feelings of MF. Although performing the Stroop resulted in higher subjective feelings of MF, hypoxia had no effect on the severity of self-reported MF. Additionally, this study could not provide evidence for a role of oxygenation of the PFC in the build-up of MF.
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Affiliation(s)
- Jonas De Wachter
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Manon Roose
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Radiology, UZ Brussel, Brussels, Belgium
| | - Matthias Proost
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jelle Habay
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
- Research Foundation Flanders (FWO), Brussels, Belgium
| | - Matthias Verstraelen
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Sander De Bock
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium
| | - Kevin De Pauw
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium
| | - Romain Meeusen
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jeroen Van Cutsem
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
- VIPER Research Unit, Royal Military Academy, Brussels, Belgium
| | - Bart Roelands
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium.
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium.
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13
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van Steenbergen H, Wilderjans TF, Band GPH, Nieuwenhuis ST. Boosting arousal and cognitive performance through alternating posture: Insights from a multi-method laboratory study. Psychophysiology 2024:e14634. [PMID: 38943231 DOI: 10.1111/psyp.14634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 06/01/2024] [Accepted: 06/01/2024] [Indexed: 07/01/2024]
Abstract
This study investigated the role of arousal and effort costs in the cognitive benefits of alternating between sitting and standing postures using a sit-stand desk, while measuring executive functions, self-reports, physiology, and neural activity in a 2-h laboratory session aimed to induce mental fatigue. Two sessions were conducted with a one-week gap, during which participants alternated between sitting and standing postures each 20-min block in one session and remained seated in the other. In each block, inhibition, switching, and updating were assessed. We examined effects of time-on-task, acute (local) effects of standing versus sitting posture, and cumulative (global) effects of a standing posture that generalize to the subsequent block in which participants sit. Results (N = 43) confirmed that time-on-task increased mental fatigue and decreased arousal. Standing (versus sitting) led to acute increases in arousal levels, including self-reports, alpha oscillations, and cardiac responses. Standing also decreased physiological and perceived effort costs. Standing enhanced processing speed in the flanker task, attributable to shortened nondecision time and speeded evidence accumulation processes. No significant effects were observed on higher-level executive functions. Alternating postures also increased heart rate variability cumulatively over time. Exploratory mediation analyses indicated that the positive impact of acute posture on enhanced drift rate was mediated by self-reported arousal, whereas decreased nondecision time was mediated by reductions in alpha power. In conclusion, alternating between sitting and standing postures can enhance arousal, decrease effort costs, and improve specific cognitive and physiological outcomes.
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Affiliation(s)
- Henk van Steenbergen
- Cognitive Psychology Unit, Institute of Psychology, Leiden University, Leiden, The Netherlands
- Leiden Institute for Brain and Cognition, Leiden, The Netherlands
| | - Tom F Wilderjans
- Leiden Institute for Brain and Cognition, Leiden, The Netherlands
- Methodology and Statistics Unit, Institute of Psychology, Faculty of Social and Behavioral Sciences, Leiden University, Leiden, The Netherlands
- Research Group of Quantitative Psychology and Individual Differences, Faculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium
| | - Guido P H Band
- Cognitive Psychology Unit, Institute of Psychology, Leiden University, Leiden, The Netherlands
- Leiden Institute for Brain and Cognition, Leiden, The Netherlands
| | - Sander T Nieuwenhuis
- Cognitive Psychology Unit, Institute of Psychology, Leiden University, Leiden, The Netherlands
- Leiden Institute for Brain and Cognition, Leiden, The Netherlands
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14
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Xu J, Zhang W, Yu J, Li G, Cui J, Qi H, Zhang M, Li M, Hu Y, Wang H, Min H, Xu F, Xu X, Zhu C, Xiao Y, Zhang Y. Functional near-infrared spectroscopy-based neurofeedback training regulates time-on-task effects and enhances sustained cognitive performance. Cereb Cortex 2024; 34:bhae259. [PMID: 38904080 DOI: 10.1093/cercor/bhae259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 05/28/2024] [Accepted: 06/04/2024] [Indexed: 06/22/2024] Open
Abstract
Time-on-task effect is a common consequence of long-term cognitive demand work, which reflects reduced behavioral performance and increases the risk of accidents. Neurofeedback is a neuromodulation method that can guide individuals to regulate their brain activity and manifest as changes in related symptoms and cognitive behaviors. This study aimed to examine the effects of functional near-infrared spectroscopy-based neurofeedback training on time-on-task effects and sustained cognitive performance. A randomized, single-blind, sham-controlled study was performed: 17 participants received feedback signals of their own dorsolateral prefrontal cortex activity (neurofeedback group), and 16 participants received feedback signals of dorsolateral prefrontal cortex activity from the neurofeedback group (sham-neurofeedback group). All participants received 5 neurofeedback training sessions and completed 2 sustained cognitive tasks, including a 2-back task and a psychomotor vigilance task, to evaluate behavioral performance changes following neurofeedback training. Results showed that neurofeedback relative to the sham-neurofeedback group exhibited increased dorsolateral prefrontal cortex activation, increased accuracy in the 2-back task, and decreased mean response time in the psychomotor vigilance task after neurofeedback training. In addition, the neurofeedback group showed slower decline performance during the sustained 2-back task after neurofeedback training compared with sham-neurofeedback group. These findings demonstrate that neurofeedback training could regulate time-on-task effects on difficult task and enhance performance on sustained cognitive tasks by increasing dorsolateral prefrontal cortex activity.
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Affiliation(s)
- Jiayu Xu
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Wenchao Zhang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Juan Yu
- Department of Gastroenterology, Xijing Hospital, Air Force Medical University, Changle West Road, Xincheng District, Xi'an, Shaanxi 710032, China
| | - Guanya Li
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Jianqi Cui
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Haowen Qi
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Minmin Zhang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Mengshan Li
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Yang Hu
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
| | - Haoyi Wang
- College of Westa, Southwest University, Tiansheng Road, Beipei District, Chongqing 400715, China
| | - Huaqiao Min
- Beijing Institute of Remote Sensing Information, Anwaiwaiguan Road, Chaoyang District, Beijing 100192, China
| | - Fenggang Xu
- National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Lvyuan West Road, Haidian District, Beijing 100094, China
| | - Xiaodan Xu
- National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Lvyuan West Road, Haidian District, Beijing 100094, China
| | - Chaozhe Zhu
- State Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Normal University, Xinjiekouwai Street, Haidian District, Beijing 100091, China
| | - Yi Xiao
- National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Lvyuan West Road, Haidian District, Beijing 100094, China
| | - Yi Zhang
- Center for Brain Imaging, School of Life Science and Technology, Xidian University & Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
- International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment & Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xifeng Road, Chang'an District, Xi'an, Shaanxi 710126, China
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15
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Powell A, Sumnall H, Kullu C, Owens L, Montgomery C. Changes in processing speed during early abstinence from alcohol dependence. J Psychopharmacol 2024; 38:551-561. [PMID: 38804547 PMCID: PMC11179317 DOI: 10.1177/02698811241254830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
BACKGROUND Processing speed is a task-independent construct underpinning more complex goal-related abilities. Processing speed is impaired in alcohol dependence (AD) and is linked to relapse, as are the functions it underpins. Reliable measurement of processing speed may allow tracking of AD recovery trajectories and identify patients requiring additional support. AIMS To assess changes in reaction time (RT) from baseline (at the start of a detoxification programme) across early abstinence. METHODS Vibrotactile RT was assessed in early recovery between days 3 and 7 of treatment in 66 individuals with AD (25 females; aged 19-74, 44.60 ± 10.60 years) and against 35 controls tested on one occasion (19 females; 41.00 ± 13.60), using two multivariate multiple regressions. A mixed multivariate analysis of covariance (MANCOVA) of available AD data (n = 45) assessed change in RT between timepoints and between treatment settings (outpatient vs inpatient). RESULTS The group (AD vs control) significantly predicted choice RT at baseline and follow-up but did not significantly predict simple RT or RT variability, which is inconsistent with previous findings. At follow-up, mental fatigue was also predicted by the group, and MANCOVA indicated that this had worsened in inpatients but improved in outpatients. CONCLUSIONS Recovery of RT measures so early in the treatment journey was not in line with previous research which indicates persisting deficits. The interaction between setting and timepoint indicates that despite being typically less medically complex, outpatients require ongoing support and monitoring during their recovery.
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Affiliation(s)
- Anna Powell
- School of Psychology, Liverpool John Moores University, Liverpool, UK
- Liverpool Centre for Alcohol Research, Liverpool, UK
| | - Harry Sumnall
- Liverpool Centre for Alcohol Research, Liverpool, UK
- Public Health Institute, Liverpool John Moores University, Liverpool, UK
| | - Cecil Kullu
- Mersey Care NHS Foundation Trust, Liverpool, UK
| | - Lynn Owens
- Liverpool Centre for Alcohol Research, Liverpool, UK
- University of Liverpool, Liverpool, UK
| | - Catharine Montgomery
- School of Psychology, Liverpool John Moores University, Liverpool, UK
- Liverpool Centre for Alcohol Research, Liverpool, UK
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16
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Borghetti L, Curley T, Rhodes LJ, Morris MB, Veksler BZ. Hybrid framework of fatigue: connecting motivational control and computational moderators to gamma oscillations. FRONTIERS IN NEUROERGONOMICS 2024; 5:1375913. [PMID: 38864094 PMCID: PMC11165150 DOI: 10.3389/fnrgo.2024.1375913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/23/2024] [Indexed: 06/13/2024]
Abstract
Introduction There is a need to develop a comprehensive account of time-on-task fatigue effects on performance (i.e., the vigilance decrement) to increase predictive accuracy. We address this need by integrating three independent accounts into a novel hybrid framework. This framework unites (1) a motivational system balancing goal and comfort drives as described by an influential cognitive-energetic theory with (2) accumulating microlapses from a recent computational model of fatigue, and (3) frontal gamma oscillations indexing fluctuations in motivational control. Moreover, the hybrid framework formally links brief lapses (occurring over milliseconds) to the dynamics of the motivational system at a temporal scale not otherwise described in the fatigue literature. Methods EEG and behavioral data was collected from a brief vigilance task. High frequency gamma oscillations were assayed, indexing effortful controlled processes with motivation as a latent factor. Binned and single-trial gamma power was evaluated for changes in real- and lagged-time and correlated with behavior. Functional connectivity analyses assessed the directionality of gamma power in frontal-parietal communication across time-on-task. As a high-resolution representation of latent motivation, gamma power was scaled by fatigue moderators in two computational models. Microlapses modulated transitions from an effortful controlled state to a minimal-effort default state. The hybrid models were compared to a computational microlapse-only model for goodness-of-fit with simulated data. Results Findings suggested real-time high gamma power exhibited properties consistent with effortful motivational control. However, gamma power failed to correlate with increases in response times over time, indicating electrophysiology and behavior relations are insufficient in capturing the full range of fatigue effects. Directional connectivity affirmed the dominance of frontal gamma activity in controlled processes in the frontal-parietal network. Parameterizing high frontal gamma power, as an index of fluctuating relative motivational control, produced results that are as accurate or superior to a previous microlapse-only computational model. Discussion The hybrid framework views fatigue as a function of a energetical motivational system, managing the trade-space between controlled processes and competing wellbeing needs. Two gamma computational models provided compelling and parsimonious support for this framework, which can potentially be applied to fatigue intervention technologies and related effectiveness measures.
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Affiliation(s)
- Lorraine Borghetti
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
- ORISE at Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Taylor Curley
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - L. Jack Rhodes
- BAE System at Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Megan B. Morris
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Bella Z. Veksler
- Tier1 Performance Solutions at Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
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17
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Lin H, Westbrook A, Fan F, Inzlicht M. An experimental manipulation of the value of effort. Nat Hum Behav 2024; 8:988-1000. [PMID: 38438651 DOI: 10.1038/s41562-024-01842-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 01/31/2024] [Indexed: 03/06/2024]
Abstract
People who take on challenges and persevere longer are more likely to succeed in life. But individuals often avoid exerting effort, and there is limited experimental research investigating whether we can learn to value effort. We developed a paradigm to test the hypothesis that people can learn to value effort and will seek effortful challenges if directly incentivized to do so. We also dissociate the effects of rewarding people for choosing effortful challenges and performing well. The results provide limited evidence that rewarding effort increased people's willingness to choose harder tasks when rewards were no longer offered (near transfer). There was also mixed evidence that rewarding effort increased willingness to choose harder tasks in another unrelated and unrewarded task (far transfer). These heterogeneous results highlight the need for further research to understand when this paradigm may be the most effective for increasing and generalizing the value of effort.
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Affiliation(s)
- Hause Lin
- Sloan School of Management, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Psychology, Cornell University, Ithaca, NY, USA.
| | - Andrew Westbrook
- Center for Advanced Human Brain Imaging Research, Rutgers University, Piscataway, NJ, USA
| | - Frank Fan
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Michael Inzlicht
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
- Rotman School of Management, University of Toronto, Toronto, Ontario, Canada
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18
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Diez P, Orosco L, Garcés Correa A, Carmona L. Assessment of visual fatigue in SSVEP-based brain-computer interface: a comprehensive study. Med Biol Eng Comput 2024; 62:1475-1490. [PMID: 38267740 DOI: 10.1007/s11517-023-03000-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 12/13/2023] [Indexed: 01/26/2024]
Abstract
Fatigue deteriorates the performance of a brain-computer interface (BCI) system; thus, reliable detection of fatigue is the first step to counter this problem. The fatigue evaluated by means of electroencephalographic (EEG) signals has been studied in many research projects, but widely different results have been reported. Moreover, there is scant research when considering the fatigue on steady-state visually evoked potential (SSVEP)-based BCI. Therefore, nowadays, fatigue detection is not a completely solved topic. In the current work, the issues found in the literature that led to the differences in the results are identified and saved by performing a new experiment on an SSVEP-based BCI system. The experiment was long enough to produce fatigue in the users, and different SSVEP stimulation ranges were used. Additionally, the EEG features commonly reported in the literature (EEG rhythms powers, SNR, etc.) were calculated as well as newly proposed features (spectral features and Lempel-Ziv complexity). The analysis was carried out on O1, Oz and O2 channels. This work found a tendency of displacement from high-frequency rhythms to low-frequency ones, and thus, better EEG features should present a similar behaviour. Then, the 'relative power' of EEG rhythms, the rates (θ + α)/β, α/β and θ/β, some spectral features (central and mean frequencies, asymmetry and kurtosis coefficients, etc.) and Lempel-Ziv complexity are proposed as reliable EEG features for fatigue detection. Hence, this set of features may be used to construct a more trustworthy fatigue index.
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Affiliation(s)
- Pablo Diez
- Instituto de Bioingeniería (INBIO), Facultad de Ingeniería, Universidad Nacional de San Juan (UNSJ), San Juan, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Lorena Orosco
- Instituto de Bioingeniería (INBIO), Facultad de Ingeniería, Universidad Nacional de San Juan (UNSJ), San Juan, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Agustina Garcés Correa
- Instituto de Bioingeniería (INBIO), Facultad de Ingeniería, Universidad Nacional de San Juan (UNSJ), San Juan, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Luciano Carmona
- Instituto de Bioingeniería (INBIO), Facultad de Ingeniería, Universidad Nacional de San Juan (UNSJ), San Juan, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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19
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Wiley K, Berger P, Friehs MA, Mandryk RL. Measuring the Reliability of a Gamified Stroop Task: Quantitative Experiment. JMIR Serious Games 2024; 12:e50315. [PMID: 38598265 PMCID: PMC11043929 DOI: 10.2196/50315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 11/29/2023] [Accepted: 01/31/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Few gamified cognitive tasks are subjected to rigorous examination of psychometric properties, despite their use in experimental and clinical settings. Even small manipulations to cognitive tasks require extensive research to understand their effects. OBJECTIVE This study aims to investigate how game elements can affect the reliability of scores on a Stroop task. We specifically investigated performance consistency within and across sessions. METHODS We created 2 versions of the Stroop task, with and without game elements, and then tested each task with participants at 2 time points. The gamified task used points and feedback as game elements. In this paper, we report on the reliability of the gamified Stroop task in terms of internal consistency and test-retest reliability, compared with the control task. We used a permutation approach to evaluate internal consistency. For test-retest reliability, we calculated the Pearson correlation and intraclass correlation coefficients between each time point. We also descriptively compared the reliability of scores on a trial-by-trial basis, considering the different trial types. RESULTS At the first time point, the Stroop effect was reduced in the game condition, indicating an increase in performance. Participants in the game condition had faster reaction times (P=.005) and lower error rates (P=.04) than those in the basic task condition. Furthermore, the game condition led to higher measures of internal consistency at both time points for reaction times and error rates, which indicates a more consistent response pattern. For reaction time in the basic task condition, at time 1, rSpearman-Brown=0.78, 95% CI 0.64-0.89. At time 2, rSpearman-Brown=0.64, 95% CI 0.40-0.81. For reaction time, in the game condition, at time 1, rSpearman-Brown=0.83, 95% CI 0.71-0.91. At time 2, rSpearman-Brown=0.76, 95% CI 0.60-0.88. Similarly, for error rates in the basic task condition, at time 1, rSpearman-Brown=0.76, 95% CI 0.62-0.87. At time 2, rSpearman-Brown=0.74, 95% CI 0.58-0.86. For error rates in the game condition, at time 1, rSpearman-Brown=0.76, 95% CI 0.62-0.87. At time 2, rSpearman-Brown=0.74, 95% CI 0.58-0.86. Test-retest reliability analysis revealed a distinctive performance pattern depending on the trial type, which may be reflective of motivational differences between task versions. In short, especially in the incongruent trials where cognitive conflict occurs, performance in the game condition reaches peak consistency after 100 trials, whereas performance consistency drops after 50 trials for the basic version and only catches up to the game after 250 trials. CONCLUSIONS Even subtle gamification can impact task performance albeit not only in terms of a direct difference in performance between conditions. People playing the game reach peak performance sooner, and their performance is more consistent within and across sessions. We advocate for a closer examination of the impact of game elements on performance.
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Affiliation(s)
- Katelyn Wiley
- Department of Computer Science, University of Saskatchewan, Saskatoon, SK, Canada
| | - Phaedra Berger
- Department of Computer Science, University of Saskatchewan, Saskatoon, SK, Canada
| | - Maximilian Achim Friehs
- Faculty of Behavioural, Management and Social Sciences, University of Twente, Enschede, Netherlands
- School of Psychology, University College Dublin, Dublin, Ireland
- Max-Planck-Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Regan Lee Mandryk
- Department of Computer Science, University of Victoria, Victoria, BC, Canada
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20
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Rhodes LJ, Borghetti L, Morris MB. Multiscale entropy in a 10-minute vigilance task. Int J Psychophysiol 2024; 198:112323. [PMID: 38428744 DOI: 10.1016/j.ijpsycho.2024.112323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
Research has shown multiscale entropy, brain signal behavior across time scales, to reliably increase at lower time scales with time-on-task fatigue. However, multiscale entropy has not been examined in short vigilance tasks (i.e., ≤ 10 min). Addressing this gap, we examine multiscale entropy during a 10-minute Psychomotor Vigilance Test (PVT). Thirty-four participants provided neural data while completing the PVT. We compared the first 2 min of the task to the 7th and 8th minutes to avoid end-spurt effects. Results suggested increased multiscale entropy at lower time scales later compared to earlier in the task, suggesting multiscale entropy is a strong marker of time-on-task fatigue onset during short vigils. Separate analyses for Fast and Slow performers reveal differential entropy patterns, particularly over visual cortices. Here, observed brain-behavior linkage between entropy and reaction time for slow performers suggests that entropy assays over sensory cortices might have predictive value for fatigue onset or shifts from on- to off-task states.
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Affiliation(s)
- L Jack Rhodes
- Ball Aerospace at Wright-Patterson Air Force Base, OH, United States of America.
| | - Lorraine Borghetti
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, United States of America
| | - Megan B Morris
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, United States of America
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21
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Hassan EK, Jones AM, Buckingham G. A novel protocol to induce mental fatigue. Behav Res Methods 2024; 56:3995-4008. [PMID: 37537491 PMCID: PMC11133042 DOI: 10.3758/s13428-023-02191-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2023] [Indexed: 08/05/2023]
Abstract
Mental fatigue is a commonplace human experience which is the focus of a growing body of research. Whilst researchers in numerous disciplines have attempted to uncover the origins, nature, and effects of mental fatigue, the literature is marked by many contradictory findings. We identified two major methodological problems for mental fatigue research. First, researchers rarely use objective measures of mental fatigue. Instead, they rely heavily on subjective reports as evidence that mental fatigue has been induced in participants. We aimed to develop a task which led to not only a subjective increase in mental fatigue, but a corresponding performance decrement in the mentally fatiguing task as an objective measure. Secondly, current mental fatigue paradigms have low ecological validity - in most prior studies participants have been fatigued with a single repetitive task such as the n-back or Stroop. To move towards a more ecologically valid paradigm, our participants undertook a battery of diverse cognitive tasks designed to challenge different aspects of executive function. The AX-CPT, n-back, mental rotation, and visual search tasks were chosen to challenge response inhibition, working memory, spatial reasoning, and attention. We report results from 45 participants aged 19 to 63 years who completed a two-hour battery comprising four different cognitive tasks. Subjective fatigue ratings and task performance were measured at the beginning and end of the battery. Our novel method resulted in an increase in subjective ratings of fatigue (p < 0.001) and a reduction in task performance (p = 0.008). Future research into mental fatigue may benefit from using this task battery.
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Affiliation(s)
- E K Hassan
- Public Health and Sport Sciences, University of Exeter, St Luke's Campus, Heavitree Road, Exeter, EX1 2LT, UK.
| | - A M Jones
- Public Health and Sport Sciences, University of Exeter, St Luke's Campus, Heavitree Road, Exeter, EX1 2LT, UK
| | - G Buckingham
- Public Health and Sport Sciences, University of Exeter, St Luke's Campus, Heavitree Road, Exeter, EX1 2LT, UK
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22
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Colitti K, Mitchell M, Langford F. Sheep fatigue during transport: Lost in translation? Anim Welf 2024; 33:e13. [PMID: 38510418 PMCID: PMC10951664 DOI: 10.1017/awf.2024.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/14/2023] [Accepted: 02/07/2024] [Indexed: 03/22/2024]
Abstract
Although sheep are commonly transported long distances, and sheep welfare during transport is a topic of research and policy discussion, the subject of their fatigue during transport has been under-researched. The current qualitative study, focused on the EU and UK, aimed to critically analyse stakeholder views on issues relating to sheep fatigue, including behavioural indications of fatigue, the interplay between fatigue and other factors, and the practicalities of identifying fatigue in commercial transport conditions. Insight into stakeholder perceptions of these issues could contribute to the body of knowledge regarding sheep fatigue during transport, potentially playing a part in future efforts to improve fatigue understanding and detection. Eighteen experts from different stakeholder groups were interviewed. Reflexive thematic analysis of interview data yielded four themes and three sub-themes. The first theme, "Let's anthropomorphise it a little bit", underscores the pervasiveness of anthropomorphism and suggests using it in a conscious and deliberate way to drive stakeholder engagement and policy change. The second theme, "We think that they're like we are and they're not", cautions against wholesale transfer of human experiences to animals. The third theme, 'See the whole animal', advocates using Qualitative Behaviour Analysis (QBA), proven reliable in other contexts, to deepen and enrich our current understanding of fatigue. The fourth theme, 'Fatigue "never comes up"', highlights the fact that fatigue is rarely if ever discussed in the context of sheep transport. These themes suggest several avenues for future research, including developing QBA-based assessments for fatigue to improve welfare during transport.
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Affiliation(s)
- Katia Colitti
- The University of Edinburgh, Royal Dick School of Veterinary Studies, Roslin, Midlothian, UK
| | | | - Fritha Langford
- Newcastle University, School of Natural and Environmental Science, Newcastle-upon-Tyne, UK
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23
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Marsala MJ, Christie AD. Neuromuscular behaviour in the first dorsal interosseus following mental fatigue. Exp Physiol 2024; 109:416-426. [PMID: 38130030 PMCID: PMC10988746 DOI: 10.1113/ep091349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023]
Abstract
We examined sex-specific changes to neuromuscular function in response to mental fatigue. Twenty-five young, healthy adults (13 F, 12 M) performed a mentally fatiguing task and control condition for 30 min on two separate days. Neuromuscular function was assessed in the first dorsal interosseous before and after each condition. Reaction time decreased after the mentally fatiguing task (P < 0.001, η2 = 0.47). Males and females reported higher levels of subjective fatigue after the mentally fatiguing task (P < 0.02, η2 = 0.07). Motor unit firing rate increased over time at 10% maximal voluntary contraction (MVC; P < 0.04, η2 = 0.16), and decreased over time at 50% MVC (P < 0.01, η2 = 0.14); however, this was not unique to either sex. During a variable force contraction, error decreased in females over time and increased in males (P < 0.05, η2 = 0.13), although changes were not unique to mental fatigue. Physiological function of the neuromuscular system was not specifically affected by mental fatigue in males or females.
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Affiliation(s)
- Michael J. Marsala
- School of Kinesiology, Faculty of Health SciencesThe University of Western OntarioOntarioCanada
| | - Anita D. Christie
- School of Kinesiology, Faculty of Health SciencesThe University of Western OntarioOntarioCanada
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24
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Peters KJ, Maslovat D, Carlsen AN. Visual perceptual processing is unaffected by cognitive fatigue. Conscious Cogn 2024; 119:103666. [PMID: 38387139 DOI: 10.1016/j.concog.2024.103666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 12/20/2023] [Accepted: 02/07/2024] [Indexed: 02/24/2024]
Abstract
Cognitive fatigue (CF) can lead to an increase in the latency of simple reaction time, although the processes involved in this delay are unknown. One potential explanation is that a longer time may be required for sensory processing of relevant stimuli. To investigate this possibility, the current study used a visual inspection time task to measure perceptual processing speed before and after a CF (math and memory) or non-fatiguing (documentary film) intervention. Subjective fatigue and simple reaction time significantly increased following the CF, but not the non-fatiguing intervention, confirming that CF was induced. Conversely, there was no effect of CF on inspection time task performance. It was therefore concluded that the speed of perceptual processing is not significantly impacted by CF, and thus is unlikely to underlie CF-related reaction time increases. Instead, increases in simple reaction time latency in CF may be due to delays in response preparation or initiation.
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Affiliation(s)
- Kathleen J Peters
- School of Human Kinetics, University of Ottawa, 125 University Private, Ottawa, ON, Canada.
| | - Dana Maslovat
- School of Human Kinetics, University of Ottawa, 125 University Private, Ottawa, ON, Canada.
| | - Anthony N Carlsen
- School of Human Kinetics, University of Ottawa, 125 University Private, Ottawa, ON, Canada.
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25
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Filipas L, Rossi C, Codella R, Bonato M. Mental Fatigue Impairs Second Serve Accuracy in Tennis Players. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2024; 95:190-196. [PMID: 37036414 DOI: 10.1080/02701367.2023.2174488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 01/25/2023] [Indexed: 06/19/2023]
Abstract
Purpose: The aim of this 2-week randomized, counterbalance and crossover study was to investigate the effect of acute mental fatigue (MF) on tennis serve performance and accuracy in tennis players. Methods: Ten male tennis players (18 ± 4 years, 1.80 ± 0.08 m; 71 ± 13 kg) were randomized to either the MF group (N = 5) that underwent an acute MF protocol or to a control (CON) group (N = 5). The MF condition consisted in a 30-min modified Stroop color word task performed before on-court serve speed test. A visual analogue scale (VAS) was used to assess the perceptions of MF and motivation toward the upcoming technical tests. Results: Reduction over baseline score of Stroop test was noted in accuracy (N < .001), but not in reaction time (N = .968) in the MF group. Increments in perceived workload were detected (N < .001) in MF group compared to CON. No differences for first and second serve speed from deuce and advantage side were observed. Increment of percentage of failed second serves from the deuce side (N = .043) in MF were detected. Conclusions: An acute MF protocol reduced tennis serve accuracy from deuce side in male tennis players. Players should avoid cognitive efforts before training sessions and matches to prevent negative effects of their technical performance.
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Affiliation(s)
- Luca Filipas
- Università degli Studi di Milano
- IRCCS MultiMedica
| | | | | | - Matteo Bonato
- Università degli Studi di Milano
- IRCCS Istituto Ortopedico Galeazzi
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26
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Matuz A, Darnai G, Zsidó AN, Janszky J, Csathó Á. Structural neural correlates of mental fatigue and reward-induced improvement in performance. Biol Futur 2024; 75:93-104. [PMID: 37889452 DOI: 10.1007/s42977-023-00187-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023]
Abstract
Neuroimaging studies investigating the association between mental fatigue (henceforth fatigue) and brain physiology have identified many brain regions that may underly the cognitive changes induced by fatigue. These studies focused on the functional changes and functional connectivity of the brain relating to fatigue. The structural correlates of fatigue, however, have received little attention. To fill this gap, this study explored the associations of fatigue with cortical thickness of frontal and parietal regions. In addition, we aimed to explore the associations between reward-induced improvement in performance and neuroanatomical markers in fatigued individuals. Thirty-nine healthy volunteers performed the psychomotor vigilance task for 15 min (i.e., 3 time-on-task blocks of 5 min) out of scanner; followed by an additional rewarded block of the task lasting 5 min. Baseline high-resolution T1-weigthed MR images were obtained. Reaction time increased with time-on-task but got faster again in the rewarded block. Participants' subjective fatigue increased during task performance. In addition, we found that higher increase in subjective mental fatigue was associated with the cortical thickness of the following areas: bilateral precuneus, right precentral gyrus; right pars triangularis and left superior frontal gyrus. Our results suggest that individual differences in subjective mental fatigue may be explained by differences in the degree of cortical thickness of areas that are associated with motor processes, executive functions, intrinsic alertness and are parts of the default mode network.
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Affiliation(s)
- András Matuz
- Department of Behavioural Sciences, Medical School, University of Pécs, Pécs, Hungary.
- Szentágothai Research Centre, University of Pécs, Pécs, Hungary.
| | - Gergely Darnai
- Department of Behavioural Sciences, Medical School, University of Pécs, Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, Pécs, Hungary
- Department of Neurology, Medical School, University of Pécs, Szigeti Str. 12, Pécs, 7624, Hungary
| | - András N Zsidó
- Szentágothai Research Centre, University of Pécs, Pécs, Hungary
- Institute of Psychology, Faculty of Humanities, University of Pécs, Pécs, Hungary
| | - József Janszky
- Szentágothai Research Centre, University of Pécs, Pécs, Hungary
- Department of Neurology, Medical School, University of Pécs, Szigeti Str. 12, Pécs, 7624, Hungary
- ELKH-PTE Clinical Neuroscience MR Research Group, Pécs, Hungary
| | - Árpád Csathó
- Department of Behavioural Sciences, Medical School, University of Pécs, Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, Pécs, Hungary
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27
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Kawashima T, Shiratori H, Amano K. The relationship between alpha power and heart rate variability commonly seen in various mental states. PLoS One 2024; 19:e0298961. [PMID: 38427683 PMCID: PMC10906897 DOI: 10.1371/journal.pone.0298961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 02/01/2024] [Indexed: 03/03/2024] Open
Abstract
The extensive exploration of the correlation between electroencephalogram (EEG) and heart rate variability (HRV) has yielded inconsistent outcomes, largely attributable to variations in the tasks employed in the studies. The direct relationship between EEG and HRV is further complicated by alpha power, which is susceptible to influences such as mental fatigue and sleepiness. This research endeavors to examine the brain-heart interplay typically observed during periods of music listening and rest. In an effort to mitigate the indirect effects of mental states on alpha power, subjective fatigue and sleepiness were measured during rest, while emotional valence and arousal were evaluated during music listening. Partial correlation analyses unveiled positive associations between occipital alpha2 power (10-12 Hz) and nHF, an indicator of parasympathetic activity, under both music and rest conditions. These findings underscore brain-heart interactions that persist even after the effects of other variables have been accounted for.
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Affiliation(s)
- Tomoya Kawashima
- Department of Psychological Science, College of Informatics and Human Communication, Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japan
| | - Honoka Shiratori
- Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Kaoru Amano
- Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan
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28
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Lee Marmol N, Ryan NP, Sood N, Morrison E, Botchway-Commey E, Anderson V, Catroppa C. Biopsychosocial correlates of fatigue in young adult survivors of childhood traumatic brain injury: A prospective cohort study. Neuropsychol Rehabil 2024:1-18. [PMID: 38380887 DOI: 10.1080/09602011.2024.2319910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 02/07/2024] [Indexed: 02/22/2024]
Abstract
This prospective cohort study aimed to evaluate the potential role of injury, socio-demographic and individual psychological factors in predicting long-term fatigue outcomes in young adult survivors of childhood TBI at 16-years post-injury. The study included 51 young adults diagnosed with childhood TBI from 2-12 years of age. Twenty age-and-sex-matched controls were included for comparison. Findings showed that almost one-in-four TBI participants (24%) endorsed clinically elevated fatigue at 16-years post-injury. Despite the relatively large proportion of TBI participants endorsing clinically significant fatigue, group comparisons revealed that the TBI and control groups did not significantly differ on fatigue symptom severity or rates of clinically elevated fatigue. For the TBI group, post-injury fatigue was significantly associated with socio-demographic and psychological factors, including lower educational level, higher depression symptom severity, and more frequent substance use. Higher fatigue was also associated with lower self-reported quality of life (QoL) in the physical, psychological, and environmental domains, even after controlling for depressive symptom severity, socio-demographic, and injury-related factors. Overall, findings show that a substantial proportion of young adults with a history of childhood TBI experience clinically elevated fatigue at 16-years post-injury. Identification and treatment of modifiable risk-factors (e.g. depression symptoms, substance use) has potential to reduce fatigue.
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Affiliation(s)
- Nohely Lee Marmol
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
| | - Nicholas P Ryan
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
- School of Psychology, Deakin University, Geelong, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Nikita Sood
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
| | - Elle Morrison
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
| | - Edith Botchway-Commey
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Vicki Anderson
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
- School of Psychological Sciences, University of Melbourne, Melbourne, Australia
- Psychology Service, The Royal Children's Hospital, Melbourne, Australia
| | - Cathy Catroppa
- Brain and Mind Research, Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
- School of Psychological Sciences, University of Melbourne, Melbourne, Australia
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29
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Kotnik P, Roelands B, Bogataj Š. Prolonged theoretical classes impact students' perceptions: an observational study. Front Psychol 2024; 15:1278396. [PMID: 38449760 PMCID: PMC10916696 DOI: 10.3389/fpsyg.2024.1278396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 02/12/2024] [Indexed: 03/08/2024] Open
Abstract
Mental fatigue (MF) arises during prolonged demanding cognitive activity and results in acute feelings of tiredness and a decreased physical and/or cognitive performance capacity. An often-overlooked population that is significantly at risk for the development of MF are university students. The current study investigated the impact of prolonged in-person theoretical classes on the perceptions of MF, boredom, and sleepiness among 27 Slovenian university students (first-year physiotherapy). Their subjective experiences at various time points during a 4-h class interspersed with a 20 min break were assessed with a repeated measures ANOVA and consequent Bonferroni post-hoc tests (significance set at <0.05). Subjective MF and sleepiness significantly increased during the first and the second part of the class (p < 0.05), while they significantly decreased during the break (p < 0.05). Boredom levels only increased significantly during the second part of the class (p < 0.05). Additionally, students who had inadequate sleep the night before the class reported higher levels of MF at the beginning of the class. This study highlighted a significant impact of a theoretical class on subjective feelings of mental fatigue and showed that a break in the middle of the class temporarily alleviated this negative impact. These results emphasize the importance of adequate sleep, effective breaks, and strategies to manage cognitive workload in optimizing students' cognitive well-being and academic performance. Further research is needed to better understand the underlying factors and develop targeted interventions to support students' cognitive functioning and well-being during prolonged academic sessions.
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Affiliation(s)
- Petra Kotnik
- Faculty of Health Sciences, University of Novo Mesto, Novo Mesto, Slovenia
| | - Bart Roelands
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Špela Bogataj
- Department of Nephrology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
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30
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Sun H, Geok Soh K, Mohammadi A, Toumi Z. The counteractive effects of interventions addressing mental fatigue on sport-specific performance among athletes: A systematic review with a meta-analysis. J Sports Sci 2024:1-13. [PMID: 38368626 DOI: 10.1080/02640414.2024.2317633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 02/02/2024] [Indexed: 02/20/2024]
Abstract
The deleterious consequences of mental fatigue (MF) on athletes in diverse sporting domains have been subject to extensive inquiry. However, the efficacy of interventions to counteract the effects of MF remains largely elusive. This review aims to evaluate the effects of counteractive interventions on the sport-specific performance of mentally fatigued athletes. Moreover, synthesizes the current evidence on which sports effectively counter the detrimental effects of MF with interventions, highlighting potential avenues for upcoming research. A systematic search was executed via Web of Science, Scopus, PubMed, and EBSCOhost, in addition to Google Scholar and references for grey literature. A meta-analysis was executed to compute effect sizes for different interventions with 13 qualified papers. Interventions include transcranial direct current stimulation, person-fit, mindfulness, glucose supplementation, caffeine mouth rinsing, and nature exposure showed potential to mitigate the detrimental effects on sport-specific performance, particularly in shooting accuracy (ES = 0.591; p = 0.001), decision-making accuracy (ES = 0.553; p = 0.006), and reaction time (ES = -0.871; p < 0.001), however, not in completion time (ES = -0.302; p = 0.182). This review underscores the unique roles of self-regulatory resources and directed attention. Nonetheless, a cautious interpretation of the findings is warranted given the paucity of investigations involving potential interventions in numerous other sports, such as volleyball, Australian football, cricket, and boxing.
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Affiliation(s)
- He Sun
- School of Physical Education, Henan University, Kaifeng, Henan Province, China
| | - Kim Geok Soh
- Department of Sport Studies, Faculty of Education Studies, Universiti Putra Malaysia, Seri Kembangan, Selangor, Malaysia
| | - Alireza Mohammadi
- Faculty of Business Management, City University Malaysia, Petaling Jaya, Selangor, Malaysia
| | - Zakaria Toumi
- School of Psychology, Northeast Normal University, Changchun, China
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31
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Jigo M, Carmel JB, Wang Q, Rodenkirch C. Transcutaneous cervical vagus nerve stimulation improves sensory performance in humans: a randomized controlled crossover pilot study. Sci Rep 2024; 14:3975. [PMID: 38368486 PMCID: PMC10874458 DOI: 10.1038/s41598-024-54026-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 02/07/2024] [Indexed: 02/19/2024] Open
Abstract
Accurate senses depend on high-fidelity encoding by sensory receptors and error-free processing in the brain. Progress has been made towards restoring damaged sensory receptors. However, methods for on-demand treatment of impaired central sensory processing are scarce. Prior invasive studies demonstrated that continuous vagus nerve stimulation (VNS) in rodents can activate the locus coeruleus-norepinephrine system to rapidly improve central sensory processing. Here, we investigated whether transcutaneous VNS improves sensory performance in humans. We conducted three sham-controlled experiments, each with 12 neurotypical adults, that measured the effects of transcutaneous VNS on metrics of auditory and visual performance, and heart rate variability (HRV). Continuous stimulation was delivered to cervical (tcVNS) or auricular (taVNS) branches of the vagus nerve while participants performed psychophysics tasks or passively viewed a display. Relative to sham stimulation, tcVNS improved auditory performance by 37% (p = 0.00052) and visual performance by 23% (p = 0.038). Participants with lower performance during sham conditions experienced larger tcVNS-evoked improvements (p = 0.0040). Lastly, tcVNS increased HRV during passive viewing, corroborating vagal engagement. No evidence for an effect of taVNS was observed. These findings validate the effectiveness of tcVNS in humans and position it as a method for on-demand interventions of impairments associated with central sensory processing dysfunction.
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Affiliation(s)
| | - Jason B Carmel
- Sharper Sense, Inc., New York, NY, USA
- Department of Neurology and Orthopedics, Columbia University Medical Center, New York, NY, USA
| | - Qi Wang
- Sharper Sense, Inc., New York, NY, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Charles Rodenkirch
- Sharper Sense, Inc., New York, NY, USA.
- The Jacobs Technion-Cornell Institute at Cornell Tech, New York, NY, USA.
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32
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Meyer L, Araiza-Illan G, Rachman L, Gaudrain E, Başkent D. Evaluating speech-in-speech perception via a humanoid robot. Front Neurosci 2024; 18:1293120. [PMID: 38406584 PMCID: PMC10884269 DOI: 10.3389/fnins.2024.1293120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/15/2024] [Indexed: 02/27/2024] Open
Abstract
Introduction Underlying mechanisms of speech perception masked by background speakers, a common daily listening condition, are often investigated using various and lengthy psychophysical tests. The presence of a social agent, such as an interactive humanoid NAO robot, may help maintain engagement and attention. However, such robots potentially have limited sound quality or processing speed. Methods As a first step toward the use of NAO in psychophysical testing of speech- in-speech perception, we compared normal-hearing young adults' performance when using the standard computer interface to that when using a NAO robot to introduce the test and present all corresponding stimuli. Target sentences were presented with colour and number keywords in the presence of competing masker speech at varying target-to-masker ratios. Sentences were produced by the same speaker, but voice differences between the target and masker were introduced using speech synthesis methods. To assess test performance, speech intelligibility and data collection duration were compared between the computer and NAO setups. Human-robot interaction was assessed using the Negative Attitude Toward Robot Scale (NARS) and quantification of behavioural cues (backchannels). Results Speech intelligibility results showed functional similarity between the computer and NAO setups. Data collection durations were longer when using NAO. NARS results showed participants had a relatively positive attitude toward "situations of interactions" with robots prior to the experiment, but otherwise showed neutral attitudes toward the "social influence" of and "emotions in interaction" with robots. The presence of more positive backchannels when using NAO suggest higher engagement with the robot in comparison to the computer. Discussion Overall, the study presents the potential of the NAO for presenting speech materials and collecting psychophysical measurements for speech-in-speech perception.
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Affiliation(s)
- Luke Meyer
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Groningen, Netherlands
| | - Gloria Araiza-Illan
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Groningen, Netherlands
| | - Laura Rachman
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Groningen, Netherlands
- Pento Audiology Centre, Zwolle, Netherlands
| | - Etienne Gaudrain
- Lyon Neuroscience Research Center, CNRS UMR 5292, INSERM UMRS 1028, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Deniz Başkent
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Groningen, Netherlands
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33
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Iso-Ahola SE. A theory of the skill-performance relationship. Front Psychol 2024; 15:1296014. [PMID: 38406307 PMCID: PMC10884260 DOI: 10.3389/fpsyg.2024.1296014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/17/2024] [Indexed: 02/27/2024] Open
Abstract
The skill-performance relationship is a cornerstone of a meritocratic society. People are selected for schools, colleges and jobs based on the premise that more skillful individuals perform better. Scientific understanding of the skill-performance relationship demands that the effect of skill on performance is objectively assessed without subjective, social, and political considerations. One of the best areas for this analysis is sports. In many sports settings, the skill-performance relationship can objectively be examined at the technical, behavioral, psychological, and neurological levels. This examination reveals that skill and performance are inextricably intertwined. While skill affects performance, performance in turn defines and affects skill. To disentangle the previously confusing and interchangeable use of these key constructs, the paper presents a theoretical model specifying that ability and effort have their own direct effects on performance, as well as indirect effects on performance through skill possession and skill execution in cognitive and physical domains of human performance. Thus, ability and skill are not the same. Although skill is a key determinant of performance, recent theory and research suggests that successful performers are successful not just because of their skills per se, but because they take advantage of their skills by creating more occurrences of momentum, making them last longer, and using them to bounce back faster from streaks of unsuccessful performance. Thus, momentum is an important mediator of the effects of skill on performance.
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Affiliation(s)
- Seppo E. Iso-Ahola
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, United States
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34
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Sun H, Soh KG, Mohammadi A, Toumi Z, Zhang L, Ding C, Gao X, Tian J. Counteracting mental fatigue for athletes: a systematic review of the interventions. BMC Psychol 2024; 12:67. [PMID: 38336843 PMCID: PMC10854164 DOI: 10.1186/s40359-023-01476-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 11/30/2023] [Indexed: 02/12/2024] Open
Abstract
The deleterious effects of mental fatigue (MF) on athletes have been carefully studied in various sports, such as soccer, badminton, and swimming. Even though many researchers have sought ways to ameliorate the negative impact of MF, there is still a lack of studies that review the interventions used to counteract MF among athletes. This review aims to report the current evidence exploring the effects of interventions on MF and sport-specific performance, including sport-specific motor performance and perceptual-cognitive skills. Web of Science, Scopus, PubMed, and SPORTDicus (EBSCOhost) were combed through to find relevant publications. Additionally, the references and Google Scholar were searched for any grey literature. For the current review, we included only randomized controlled trials that involved athletes, a primary task to induce MF, interventions to counter MF with comparable protocols, and the outcomes of sport-specific motor performance and perceptual-cognitive skill. The selection criteria resulted in the inclusion of 10 articles. The manipulations of autonomous self-control exertion, person-fit, nature exposure, mindfulness, and transactional direct current stimulation showed that positive interventions counteract MF and improve sport-specific performance in different domains, including strength, speed, skill, stamina, and perceptual-cognitive skills. The selected interventions could significantly counteract MF and improve subsequent sport-specific performance. Moreover, self-regulation and attention resources showed the importance of the potential mechanisms behind the relevant interventions.
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Affiliation(s)
- He Sun
- School of Physical Education, Henan University, Kaifeng, China
| | - Kim Geok Soh
- Department of Sport Studies, Faculty of Education Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Alireza Mohammadi
- Faculty of Business Management, City University Malaysia, Selangor, Malaysia
| | - Zakaria Toumi
- School of Psychology, Northeast Normal University, Changchun, China
| | - Lingling Zhang
- Department of Sport Studies, Faculty of Education Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- The National Football Academy, Shandong Sport University, Jinan, China
| | - Cong Ding
- Department of Sport Studies, Faculty of Education Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Xiaojuan Gao
- School of Physical Education, Henan University, Kaifeng, China
| | - Jian Tian
- School of Physical Education, Henan University, Kaifeng, China.
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Daub BD, McLean BD, Heishman AD, Peak KM, Coutts AJ. The Relationship Between Mental Fatigue and Shooting Performance Over the Course of a National Collegiate Athletic Association Division I Basketball Season. J Strength Cond Res 2024; 38:334-341. [PMID: 38090974 DOI: 10.1519/jsc.0000000000004624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
ABSTRACT Daub, BD, McLean, BD, Heishman, AD, Peak, KM, and Coutts, AJ. The relationship between mental fatigue and shooting performance over the course of a National Collegiate Athletic Association Division I basketball season. J Strength Cond Res 38(2): 334-341, 2024-The aim of this investigation was to examine the presence of mental fatigue and concurrent changes in shooting performance across various experimental weeks throughout a National Collegiate Athletic Association (NCAA) basketball season. Fifteen elite male NCAA Division I collegiate basketball players (age 20.2 ± 1.2 years, height 199.3 ± 7.1 cm, and body mass 93.1 ± 8.6 kg) volunteered for this study. Mental fatigue and basketball shooting performance was evaluated at 4 timepoints with varying seasonal demands: high game volume (GAME), high academic load (ACADEMIC), no games and no academic load (PRACTICE), and standard number of games and academic requirements (TYPICAL). Subjective mental fatigue increased significantly ( p ≤ 0.05) from Pre to Post brief psychomotor vigilance test (PVT-B) measurements at the end of the ACADEMIC week ( p = 0.002, d = 1.51) and from beginning to end of the ACADEMIC week ( p < 0.001, d = 2.21). Ratings of mental effort were significantly increased during the ACADEMIC week ( p < 0.001, d = 1.67). Recovery stress questionnaire (REST-Q) showed significant differences between week GAME and ACADEMIC with an increase in Social Stress ( p = 0.001, d = 0.84), Fatigue ( p = 0.021, d = 1.12), Disturbed Breaks ( p = 0.024, d = 0.57), and Emotional Exhaustion ( p = 0.035, d = 0.75). Lower shooting performance was observed during the ACADEMIC week from Pre to Post ( p = 0.009, d = 0.35) and higher scores Pre to Post in the TYPICAL week ( p = 0.008, d = 0.25). Basketball shooting performance was significantly reduced after increased levels of mental fatigue stemming from added academic stress. In addition, an increase in sport-specific training or games had no effect on subsequent basketball shooting performance. Special consideration should be given by coaches around examination periods because the existence of academic stressors can influence basketball shooting performance.
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Affiliation(s)
- Bryce D Daub
- School of Sport, Exercise and Rehabilitation, University of Technology Sydney, Sydney, Australia
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Blake D McLean
- School of Sport, Exercise and Rehabilitation, University of Technology Sydney, Sydney, Australia
- Oklahoma City Thunder Professional Basketball Club, Human and Player Performance, Oklahoma City, Oklahoma; and
| | - Aaron D Heishman
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
- Vegas Golden Knights Professional Hockey Club, Sport Science and Performance, Las Vegas, Nevada
| | - Keldon M Peak
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Aaron J Coutts
- School of Sport, Exercise and Rehabilitation, University of Technology Sydney, Sydney, Australia
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Arpaia P, Cuocolo R, Fullin A, Gargiulo L, Mancino F, Moccaldi N, Vallefuoco E, De Blasiis P. Executive Functions Assessment Based on Wireless EEG and 3D Gait Analysis During Dual-Task: A Feasibility Study. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE 2024; 12:268-278. [PMID: 38410182 PMCID: PMC10896422 DOI: 10.1109/jtehm.2024.3357287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/28/2024]
Abstract
Executive functions (EFs) are neurocognitive processes planning and regulating daily life actions. Performance of two simultaneous tasks, requiring the same cognitive resources, lead to a cognitive fatigue. Several studies investigated cognitive-motor task and the interference during walking, highlighting an increasing risk of falls especially in elderly and people with neurological diseases. A few studies instrumentally explored relationship between activation-no-activation of two EFs (working memory and inhibition) and spatial-temporal gait parameters. Aim of our study was to detect activation of inhibition and working memory during progressive difficulty levels of cognitive tasks and spontaneous walking using, respectively, wireless electroencephalography (EEG) and 3D-gait analysis. Thirteen healthy subjects were recruited. Two cognitive tasks were performed, activating inhibition (Go-NoGo) and working memory (N-back). EEG features (absolute and relative power in different bands) and kinematic parameters (7 spatial-temporal ones and Gait Variable Score for 9 range of motion of lower limbs) were analyzed. A significant decrease of stride length and an increase of external-rotation of foot progression were found during dual task with Go-NoGo. Moreover, a significant correlation was found between the relative power in the delta band at channels Fz, C4 and progressive difficulty levels of Go-NoGo (activating inhibition) during walking, whereas working memory showed no correlation. This study reinforces the hypothesis of the prevalent involvement of inhibition with respect to working memory during dual task walking and reveals specific kinematic adaptations. The foundations for EEG-based monitoring of cognitive processes involved in gait are laid. Clinical and Translational Impact Statement: Clinical and instrumental evaluation and training of executive functions (as inhibition), during cognitive-motor task, could be useful for rehabilitation treatment of gait disorder in elderly and people with neurological disease.
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Affiliation(s)
- Pasquale Arpaia
- Department of Electrical Engineering and Information TechnologiesUniversity of Naples Federico II 80138 Naples Italy
| | - Renato Cuocolo
- Department of Medicine, Surgery, and DentistryScuola Medica SalernitanaUniversity of Salerno 84084 Salerno Italy
| | - Allegra Fullin
- Department of Mental and Physical Health and Preventive MedicineSection of Human AnatomyUniversity of Campania Luigi Vanvitelli Caserta 81100 Naples Italy
- Department of Advanced Biomedical SciencesUniversity of Naples Federico II 80138 Naples Italy
| | - Ludovica Gargiulo
- Department of Electrical Engineering and Information TechnologiesUniversity of Naples Federico II 80138 Naples Italy
| | - Francesca Mancino
- Department of Electrical Engineering and Information TechnologiesUniversity of Naples Federico II 80138 Naples Italy
| | - Nicola Moccaldi
- Department of Electrical Engineering and Information TechnologiesUniversity of Naples Federico II 80138 Naples Italy
| | - Ersilia Vallefuoco
- Department of Psychology and Cognitive ScienceUniversity of Trento 38122 Rovereto Italy
| | - Paolo De Blasiis
- Department of Mental and Physical Health and Preventive MedicineSection of Human AnatomyUniversity of Campania Luigi Vanvitelli Caserta 81100 Naples Italy
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Jigo M, Carmel JB, Wang Q, Rodenkirch C. Transcutaneous cervical vagus nerve stimulation improves sensory performance in humans. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.08.08.552508. [PMID: 37609169 PMCID: PMC10441305 DOI: 10.1101/2023.08.08.552508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Accurate senses depend on high-fidelity encoding by sensory receptors and error-free processing in the brain. Progress has been made towards restoring damaged sensory receptors. However, methods for on-demand treatment of impaired central sensory processing are scarce. Prior invasive studies demonstrated that continuous vagus nerve stimulation (VNS) in rodents can activate the locus coeruleus-norepinephrine system to rapidly improve central sensory processing. Here, we investigated whether transcutaneous VNS improves sensory performance in humans. We conducted three sham-controlled experiments, each with 12 neurotypical adults, that measured the effects of transcutaneous VNS on metrics of auditory and visual performance, and heart rate variability (HRV). Continuous stimulation was delivered to cervical (tcVNS) or auricular (taVNS) branches of the vagus nerve while participants performed psychophysics tasks or passively viewed a display. Relative to sham stimulation, tcVNS improved auditory performance by 37% (p=0.00052) and visual performance by 23% (p=0.038). Participants with lower performance during sham conditions experienced larger tcVNS-evoked improvements (p=0.0040). Lastly, tcVNS increased HRV during passive viewing, corroborating vagal engagement. No evidence for an effect of taVNS was observed. These findings validate the effectiveness of tcVNS in humans and position it as a method for on-demand interventions of impairments associated with central sensory processing dysfunction.
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Affiliation(s)
| | - Jason B. Carmel
- Sharper Sense, Inc., New York, NY
- Department of Neurology and Orthopedics, Columbia University Medical Center, New York, NY
| | - Qi Wang
- Sharper Sense, Inc., New York, NY
- Department of Biomedical Engineering, Columbia University, New York, NY
| | - Charles Rodenkirch
- Sharper Sense, Inc., New York, NY
- The Jacobs Technion-Cornell Institute at Cornell Tech, New York, NY
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Csathó Á, Van der Linden D, Matuz A. Change in heart rate variability with increasing time-on-task as a marker for mental fatigue: A systematic review. Biol Psychol 2024; 185:108727. [PMID: 38056707 DOI: 10.1016/j.biopsycho.2023.108727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023]
Abstract
Fatigue-specific changes in the autonomic nervous system are often assumed to underlie the development of mental fatigue caused by prolonged cognitive tasks (i.e. Time-on-Task). Therefore, several previous studies have chosen to investigate the Time-on-Task related changes in heart rate variability (HRV). However, previous studies have used many different HRV indices, and their results often show inconsistencies. The present study, therefore, systematically reviewed previous empirical HRV studies with healthy individuals and in which mental fatigue is induced by prolonged cognitive tasks. Articles relevant to the objectives were systematically searched and selected by applying the PRISMA guidelines. We screened 360 records found on 4 databases and found that 19 studies were eligible for full review in accordance with the inclusion criteria. In general, all studies reviewed (with the exception of two studies) found significant changes in HRV with increasing Time-on-Task, suggesting that HRV is a reliable autonomic marker for Time-on-Task induced fatigue. The most conclusive HRV indices that showed a consistent Time-on-Task effect were the low frequency component of HRV and the time domain indices, particularly the root mean square of successive differences. Time-on-Task typically induced an increasing trend in both type of measures.
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Affiliation(s)
- Árpád Csathó
- Department of Behavioural Sciences, Medical School, University of Pécs, Pécs, Hungary; Szentágothai Research Centre, University of Pécs, Pécs, Hungary.
| | - Dimitri Van der Linden
- Department of Psychology, Education, and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands.
| | - András Matuz
- Department of Behavioural Sciences, Medical School, University of Pécs, Pécs, Hungary; Szentágothai Research Centre, University of Pécs, Pécs, Hungary.
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Russell S, Johnston RD, Stanimirovic R, Halson SL. Global practitioner assessment and management of mental fatigue and mental recovery in high-performance sport: A need for evidence-based best-practice guidelines. Scand J Med Sci Sports 2024; 34:e14491. [PMID: 37728880 DOI: 10.1111/sms.14491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/21/2023] [Accepted: 08/21/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Mental fatigue and mental recovery have gained scientific attention in relation to sporting performance, yet best practice assessment and management methods are lacking. A greater understanding of current knowledge and practices in high-performance sport are necessary. OBJECTIVE To understand the contemporary knowledge, beliefs, monitoring processes, management strategies, perceived responsibility, sources of evidence, and challenges, when assessing the mental fatigue and mental recovery of athletes in high-performance sport. METHODS A mixed-methods survey approach obtained information from 156 multi-disciplinary high-performance sport practitioners. Descriptive outputs were reported and potential differences between key concepts were detected using Wilcoxon-signed rank analysis. Thematic analysis interpreted open-text responses. RESULTS Only 11.5% and 5.1% of respondents indicated they were "very" knowledgeable about mental fatigue and mental recovery, respectively. Knowledge (p < 0.001) and confidence in application (p = 0.001) were significantly greater for mental fatigue than mental recovery. Nearly all respondents perceived mental fatigue and mental recovery impacted training and competition performance, with a greater negative impact during competition (p < 0.001). A limited number of respondents reported deliberate assessment (31.1%) or management (51.2%) of mental fatigue and mental recovery. A combination of sources of evidence were used to inform practice, with common challenges to implementation including staff knowledge, athlete-buy in, time-availability, and a lack of evidence. Practitioners reported that assessing and managing mental fatigue and mental recovery was multi-disciplinary in nature. CONCLUSION Practitioners reported that mental fatigue and mental recovery did impact performance, yet this was not reflected in the implementation of evidence-based assessment and management practices in high-performance sport.
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Affiliation(s)
- S Russell
- Sports Performance, Recovery, Injury and New Technologies Research Centre (SPRINT), Faculty of Health Sciences, Australian Catholic University, Brisbane, Queensland, Australia
- Performance Services, Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
- Sport Performance Innovation and Knowledge Excellence (SPIKE), Queensland Academy of Sport, Nathan, Queensland, Australia
| | - R D Johnston
- Sports Performance, Recovery, Injury and New Technologies Research Centre (SPRINT), Faculty of Health Sciences, Australian Catholic University, Brisbane, Queensland, Australia
- Carnegie Applied Rugby Research Centre (CARR), Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Leeds, UK
| | - R Stanimirovic
- Performance Services, Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
| | - S L Halson
- Sports Performance, Recovery, Injury and New Technologies Research Centre (SPRINT), Faculty of Health Sciences, Australian Catholic University, Brisbane, Queensland, Australia
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Jacquet T, Lepers R, Pageaux B, Poulin-Charronnat B. Acute smartphone use impairs vigilance and inhibition capacities. Sci Rep 2023; 13:23046. [PMID: 38155267 PMCID: PMC10754937 DOI: 10.1038/s41598-023-50354-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023] Open
Abstract
Smartphones are now in very widespread use, and concerns have arisen about potential detrimental effects, even with acute use. These adverse consequences are often linked to the emergence of mental fatigue. While the cognitive implications of fatigue are well-documented, knowledge about the specific influence of acute smartphone use on cognitive performance remains scarce. The aim of this study was therefore to investigate the impact of acute smartphone use on cognitive performance. It included two experiments: one designed to assess the impact of smartphone use on vigilance, and the other focusing on evaluating inhibition capacities. In Experiment 1, two groups of 40 participants completed a Psychomotor Vigilance Task (PVT) before and after using a smartphone for 45 min (experimental group), or before and after watching a documentary (control group). In Experiment 2, two groups of 40 participants were subjected to a similar experimental design but had to perform a Go/NoGo task instead of a PVT. Mental fatigue and drowsiness were evaluated with visual analog scales before and after smartphone use and watching a documentary. Results suggested that both watching a documentary and using a smartphone for 45 min increased subjective mental fatigue and drowsiness. Watching the documentary did not impair cognitive performance. Reaction times on the PVT and number of errors on NoGo trials in the Go/NoGo task were higher among the participants in the smartphone condition. These results indicate reduced vigilance and impaired inhibition capacities only after smartphone use. We conclude that acute smartphone use induces mental fatigue and decreases cognitive performance. Further research is needed to understand the mechanisms underlying this decline in cognitive performance.
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Affiliation(s)
- Thomas Jacquet
- CAPS, Inserm U1093, Université de Bourgogne, Faculté Des Sciences du Sport, BP 27877 UFR STAPS, I3M, 64 Rue de Sully, 21000, Dijon, France.
| | - Romuald Lepers
- CAPS, Inserm U1093, Université de Bourgogne, Faculté Des Sciences du Sport, BP 27877 UFR STAPS, I3M, 64 Rue de Sully, 21000, Dijon, France
| | - Benjamin Pageaux
- École de kinésiologie et des Sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montreal, QC, Canada
- Centre de recherche de l'Institut universitaire de geriatrie de Montréal (CRIUGM), Montreal, QC, Canada
- Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Montreal, QC, Canada
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Gopalan C, Niepoetter P, Butts-Wilmsmeyer C, Medavaka S, Ogle A, Daughrity S, Hackmann E, Mogan S, Lenz O. Comparison of intermittent fasting and voluntary wheel running on physical and cognitive abilities in high-fat diet-induced obese rats. PLoS One 2023; 18:e0293415. [PMID: 38055657 DOI: 10.1371/journal.pone.0293415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 10/12/2023] [Indexed: 12/08/2023] Open
Abstract
Regular physical activity is a proven routine for weight management in addressing obesity. Another method that has gained attention for its health benefits is intermittent fasting (IF). Physical and cognitive abilities while on these routines are poorly understood in the obese population. Sixty-five male Sprague Dawley rats at 7 weeks of age were subjected to diet-induced obesity by feeding a high-fat diet (HFD) or a standard diet (SD) for 8 weeks, after which behavioral testing was performed to detect any changes in physical and cognitive abilities. Rats from the HFD-fed (now considered obese) and SD-fed groups were then subjected to IF (18-hour fast and 6-hour feeding daily), voluntary wheel running (VWR), or control conditions for 3 weeks before repeating the same behavioral testing protocol. IF resulted in less weight gain (p<0.05) and elevated ketone levels (p<0.05) in both SD and HFD-fed groups. IF improved physical activity when compared to VWR and control animals in both SD and HFD-fed groups (p<0.05) while the VWR group in the SD-fed rats exhibited less physical fatigue compared to IF and controls (p<0.05). Additionally, elevated ketone levels were weakly correlated with decreased physical (p<0.0001) and exploratory behavior (p<0.01). These results suggest that IF is more effective than VWR in HFD and SD-fed rats in minimizing weight gain and retaining physical activity, and ketones may play a part in establishing the reported physical benefits. Exploration of physiological mechanisms between ketones, diet, and exercise will help fight obesity and many associated diseases.
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Affiliation(s)
- Chaya Gopalan
- Department of Applied Health, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
- Department of Nurse Anesthesiology, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Paige Niepoetter
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Carolyn Butts-Wilmsmeyer
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
- Center for Predictive Analytics, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Sai Medavaka
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Avery Ogle
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Sheyenne Daughrity
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Elizabeth Hackmann
- Department of Psychology, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Saruveish Mogan
- Department of Applied Health, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
| | - Oskar Lenz
- Department of Applied Health, Southern Illinois University Edwardsville, Edwardsville, IL, United States of America
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Yamamoto N, Sakazaki M, Nagai Y, Shoji M, Kawashima R. The effects of palatinose on attention and cerebral blood flow in healthy adults: A randomized double-blind placebo-controlled crossover study. Brain Res 2023; 1820:148553. [PMID: 37633356 DOI: 10.1016/j.brainres.2023.148553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/09/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
OBJECTIVE The primary energy source for the brain is glucose, and a continuous supply is required for the brain to work longer. This study aimed to verify the effects of palatinose on attention and cerebral blood flow in healthy adults. METHODS This randomized, double-blind, placebo-controlled crossover study included 64 healthy Japanese adults. Participants performed the Digit Vigilance Task (DVT) 60 min pre-ingestion (14:00) and 0 (15:00), 60 (16:00), 120 (17:00), and 180 (18:00) min after ingestion of 10 g of either palatinose or glucose. Cerebral blood flow was measured using a wearable 2CH functional near-infrared spectrometer (fNIRS) during each DVT. The participants underwent the Uchida-Kraepelin (UK) test between each DVT to control for fatigue. RESULTS DVT reaction times with palatinose intake were significantly shorter than those with glucose intake at 16:00, 17:00, and 18:00 (p = 0.0015, p < 0.001, and p < 0.001, respectively). The change in cerebral blood flow as a function of total hemoglobin level was significantly higher in the palatinose group than in the glucose group (p = 0.018). Regarding the post-UK mood questionnaire, "physically fatigued" and "annoyed" were significantly lower in the palatinose intake group compared to the glucose intake group at 17:00 (p = 0.0445 and p = 0.0318, respectively). Furthermore, "physically fatigued" was significantly lower, and "seriously" was higher in the palatinose intake compared to the glucose intake group at 18:00 (p = 0.00652 and p < 0.001, respectively). CONCLUSION These findings suggest that 10 g of palatinose has favorable effects on attention and cerebral blood flow. TRIAL REGISTRATION UMIN000046182.
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Affiliation(s)
- Natsumi Yamamoto
- Mitsui DM Sugar Co., Ltd., 2-28-7, Kamiochiai, Shinjuku-ku, Tokyo 161-0034, Japan.
| | - Miki Sakazaki
- Mitsui DM Sugar Co., Ltd., 2-28-7, Kamiochiai, Shinjuku-ku, Tokyo 161-0034, Japan
| | - Yukie Nagai
- Mitsui DM Sugar Co., Ltd., 2-28-7, Kamiochiai, Shinjuku-ku, Tokyo 161-0034, Japan
| | | | - Ryuta Kawashima
- NeU Corporation, Chiyoda-ku, Tokyo 101-0048, Japan; Institute of Development, Aging and Cancer (IDAC), Tohoku University, Aoba-ku, Sendai 980-0872, Japan
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Alme TN, Andreasson A, Asprusten TT, Bakken AK, Beadsworth MBJ, Boye B, Brodal PA, Brodwall EM, Brurberg KG, Bugge I, Chalder T, Due R, Eriksen HR, Fink PK, Flottorp SA, Fors EA, Jensen BF, Fundingsrud HP, Garner P, Havdal LB, Helgeland H, Jacobsen HB, Johnson GE, Jonsjö M, Knoop H, Landmark L, Launes G, Lekander M, Linnros H, Lindsäter E, Liira H, Linnestad L, Loge JH, Lyby PS, Malik S, Malt UF, Moe T, Norlin AK, Pedersen M, Pignatiello SE, Rask CU, Reme SE, Roksund G, Sainio M, Sharpe M, Thorkildsen RF, van Roy B, Vandvik PO, Vogt H, Wyller HB, Wyller VBB. Chronic fatigue syndromes: real illnesses that people can recover from. Scand J Prim Health Care 2023; 41:372-376. [PMID: 37740918 PMCID: PMC11001335 DOI: 10.1080/02813432.2023.2235609] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 07/07/2023] [Indexed: 09/25/2023] Open
Abstract
The 'Oslo Chronic Fatigue Consortium' consists of researchers and clinicians who question the current narrative that chronic fatigue syndromes, including post-covid conditions, are incurable diseases. Instead, we propose an alternative view, based on research, which offers more hope to patients. Whilst we regard the symptoms of these conditions as real, we propose that they are more likely to reflect the brain's response to a range of biological, psychological, and social factors, rather than a specific disease process. Possible causes include persistent activation of the neurobiological stress response, accompanied by associated changes in immunological, hormonal, cognitive and behavioural domains. We further propose that the symptoms are more likely to persist if they are perceived as threatening, and all activities that are perceived to worsen them are avoided. We also question the idea that the best way to cope with the illness is by prolonged rest, social isolation, and sensory deprivation.Instead, we propose that recovery is often possible if patients are helped to adopt a less threatening understanding of their symptoms and are supported in a gradual return to normal activities. Finally, we call for a much more open and constructive dialogue about these conditions. This dialogue should include a wider range of views, including those of patients who have recovered from them.
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Affiliation(s)
- The Oslo Chronic Fatigue Consortium
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
- Department of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden
- General Practitioner, Hjelmeland, Norway
- VID Specialized University, Oslo, Norway
- St. Olavs Hospital, Trondheim, Norway
- Tropical and infectious Disease Unit, Royal Liverpool University Hospital. Liverpool University Hospitals Foundation Trust, Liverpool, UK
- Department of Behavioral Medicine, University of Oslo, Oslo, Norway
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Division for Health Services, Norwegian Institute of Public Health, Oslo, Norway
- Department of Child and Adolescent Mental Health in Hospitals, Oslo University Hospital, Oslo, Norway
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, England
- Department of Sport, Food and Natural Sciences, Western Norway University of Applied Sciences, Bergen, Norway
- Research Clinic for Functional Disorders and Psychosomatics. Aarhus University Hospital, Aarhus, Denmark
- Centre for Epidemic Interventions Research, Norwegian Institute of Public Health, Oslo, Norway
- Department of General Practice, University of Oslo, Oslo, Norway
- Faculty of Medicine and Health Sciences, Department of Public Health and Nursing, General Practitioner Research Unit, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Nydalen Helsehus, Oslo, Norway
- The Child & Adolescent Health Services, University Hospital of North Norway, Tromsø, Norway
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, England
- Department of Behavior Medicine, Karolinskal University Hospital, Stockholm, Sweden
- National Advisory Unit on Psychosomatic Disorders in Children and Adolescents. Department of Child and Adolescent Mental Health in Hospitals, Oslo University Hospital, Oslo, Norway
- Department of Pain management and research, Oslo University Hospital, Oslo, Norway
- CatoSenteret Rehabilitation Center, Son, Norway
- University of Oslo, Oslo, Norway
- Department of Clinical Neuroscience, Karolinska Institutet Stockholm, Sweden
- Department of Medical Psychology, Amsterdam University Medical Centres, Location University of Amsterdam, Amsterdam, The Netherlands
- Department of Psychology, NTNU, Trondheim, Norway
- University of Bergen, Bergen, Norway
- Stress Research Institute, Department of psychology, Stockholm University, Division of Psychology/Osher Center for Integrative Health, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Health, Medicine, and Caring Sciences Pain and Rehabilitation Center, Linköping University Hospital, Linköping, Sweden
- Center for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Helsinki University Hospital, Helsinki, Finland
- Saglia medical center, Vestby, Norway
- Division of Clinical Neuroscience. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Chief Physician, Falck Norge, Oslo, Norway
- Unit Psychosomatic medicine and CL psychiatry, Rikshospitalet, Oslo University Hospital, Oslo, Norway
- Department of Child and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark
- The Mind Body Lab, Department of Psychology, University of Oslo
- General Practitioner, Klosterhagen Legesenter, Norway
- Outpatient Clinic for Functional Disorders, Helsinki University Hospital, Helsinki, Finland
- Psychological Medicine, University of Oxford, Oxford, UK
- Department of Medicine, Diakonhjemmet Hospital, Oslo, Norway
- Department of Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
- Department of Community Medicine and Global Health, Institute for Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
- Clinical Psychologist, Oslo, Norway
| | - Tomas Nordheim Alme
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Anna Andreasson
- Department of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden
| | | | - Anne Karen Bakken
- VID Specialized University, Oslo, Norway
- St. Olavs Hospital, Trondheim, Norway
| | - Michael BJ Beadsworth
- Tropical and infectious Disease Unit, Royal Liverpool University Hospital. Liverpool University Hospitals Foundation Trust, Liverpool, UK
| | - Birgitte Boye
- Department of Behavioral Medicine, University of Oslo, Oslo, Norway
- Unit Psychosomatic medicine and CL psychiatry, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Per Alf Brodal
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Elias Myrstad Brodwall
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | - Ingrid Bugge
- Department of Child and Adolescent Mental Health in Hospitals, Oslo University Hospital, Oslo, Norway
| | - Trudie Chalder
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, England
| | - Reidar Due
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Hege Randi Eriksen
- Department of Sport, Food and Natural Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Per Klausen Fink
- Research Clinic for Functional Disorders and Psychosomatics. Aarhus University Hospital, Aarhus, Denmark
| | - Signe Agnes Flottorp
- Centre for Epidemic Interventions Research, Norwegian Institute of Public Health, Oslo, Norway
- Department of General Practice, University of Oslo, Oslo, Norway
| | - Egil Andreas Fors
- Faculty of Medicine and Health Sciences, Department of Public Health and Nursing, General Practitioner Research Unit, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | | | | | - Paul Garner
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, England
| | - Lise Beier Havdal
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Helene Helgeland
- National Advisory Unit on Psychosomatic Disorders in Children and Adolescents. Department of Child and Adolescent Mental Health in Hospitals, Oslo University Hospital, Oslo, Norway
| | - Henrik Børsting Jacobsen
- Department of Pain management and research, Oslo University Hospital, Oslo, Norway
- The Mind Body Lab, Department of Psychology, University of Oslo
| | | | - Martin Jonsjö
- Department of Behavior Medicine, Karolinskal University Hospital, Stockholm, Sweden
- Department of Clinical Neuroscience, Karolinska Institutet Stockholm, Sweden
| | - Hans Knoop
- Department of Medical Psychology, Amsterdam University Medical Centres, Location University of Amsterdam, Amsterdam, The Netherlands
| | - Live Landmark
- Department of Psychology, NTNU, Trondheim, Norway
- The Mind Body Lab, Department of Psychology, University of Oslo
| | | | - Mats Lekander
- Stress Research Institute, Department of psychology, Stockholm University, Division of Psychology/Osher Center for Integrative Health, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Hannah Linnros
- Department of Health, Medicine, and Caring Sciences Pain and Rehabilitation Center, Linköping University Hospital, Linköping, Sweden
| | - Elin Lindsäter
- Center for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | | | | | - Jon Håvard Loge
- Department of Behavioral Medicine, University of Oslo, Oslo, Norway
| | | | - Sadaf Malik
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Ulrik Fredrik Malt
- Division of Clinical Neuroscience. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Trygve Moe
- Chief Physician, Falck Norge, Oslo, Norway
| | - Anna-Karin Norlin
- Department of Health, Medicine, and Caring Sciences Pain and Rehabilitation Center, Linköping University Hospital, Linköping, Sweden
| | - Maria Pedersen
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Siv Elin Pignatiello
- Unit Psychosomatic medicine and CL psychiatry, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | - Charlotte Ulrikka Rask
- Department of Child and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark
| | - Silje Endresen Reme
- Department of Pain management and research, Oslo University Hospital, Oslo, Norway
- The Mind Body Lab, Department of Psychology, University of Oslo
| | - Gisle Roksund
- General Practitioner, Klosterhagen Legesenter, Norway
| | - Markku Sainio
- Outpatient Clinic for Functional Disorders, Helsinki University Hospital, Helsinki, Finland
| | - Michael Sharpe
- Psychological Medicine, University of Oxford, Oxford, UK
| | | | - Betty van Roy
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Per Olav Vandvik
- Department of Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Henrik Vogt
- Department of Community Medicine and Global Health, Institute for Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Vegard Bruun Bratholm Wyller
- Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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44
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Holgado D, Mesquida C, Román-Caballero R. Assessing the Evidential Value of Mental Fatigue and Exercise Research. Sports Med 2023; 53:2293-2307. [PMID: 37682411 PMCID: PMC10687172 DOI: 10.1007/s40279-023-01926-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2023] [Indexed: 09/09/2023]
Abstract
It has often been reported that mental exertion, presumably leading to mental fatigue, can negatively affect exercise performance; however, recent findings have questioned the strength of the effect. To further complicate this issue, an overlooked problem might be the presence of publication bias in studies using underpowered designs, which is known to inflate false positive report probability and effect size estimates. Altogether, the presence of bias is likely to reduce the evidential value of the published literature on this topic, although it is unknown to what extent. The purpose of the current work was to assess the evidential value of studies published to date on the effect of mental exertion on exercise performance by assessing the presence of publication bias and the observed statistical power achieved by these studies. A traditional meta-analysis revealed a Cohen's dz effect size of - 0.54, 95% CI [- 0.68, - 0.40], p < .001. However, when we applied methods for estimating and correcting for publication bias (based on funnel plot asymmetry and observed p-values), we found that the bias-corrected effect size became negligible with most of publication-bias methods and decreased to - 0.36 in the more optimistic of all the scenarios. A robust Bayesian meta-analysis found strong evidence in favor of publication bias, BFpb > 1000, and inconclusive evidence in favor of the effect, adjusted dz = 0.01, 95% CrI [- 0.46, 0.37], BF10 = 0.90. Furthermore, the median observed statistical power assuming the unadjusted meta-analytic effect size (i.e., - 0.54) as the true effect size was 39% (min = 19%, max = 96%), indicating that, on average, these studies only had a 39% chance of observing a significant result if the true effect was Cohen's dz = - 0.54. If the more optimistic adjusted effect size (- 0.36) was assumed as the true effect, the median statistical power was just 20%. We conclude that the current literature is a useful case study for illustrating the dangers of conducting underpowered studies to detect the effect size of interest.
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Affiliation(s)
- Darías Holgado
- Department of Experimental Psychology, and Mind, Brain and Behavior Research Center, University of Granada, Granada, Spain.
- Institute of Sport Sciences, University of Lausanne, Quartier UNIL-Centre, Bâtiment Synathlon, Lausanne, Switzerland.
| | - Cristian Mesquida
- Centre of Applied Science for Health, Technological University Dublin, Tallaght, Ireland
| | - Rafael Román-Caballero
- Department of Experimental Psychology, and Mind, Brain and Behavior Research Center, University of Granada, Granada, Spain
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45
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Anbuhl KL, Diez Castro M, Lee NA, Lee VS, Sanes DH. Cingulate cortex facilitates auditory perception under challenging listening conditions. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.10.566668. [PMID: 38014324 PMCID: PMC10680599 DOI: 10.1101/2023.11.10.566668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
We often exert greater cognitive resources (i.e., listening effort) to understand speech under challenging acoustic conditions. This mechanism can be overwhelmed in those with hearing loss, resulting in cognitive fatigue in adults, and potentially impeding language acquisition in children. However, the neural mechanisms that support listening effort are uncertain. Evidence from human studies suggest that the cingulate cortex is engaged under difficult listening conditions, and may exert top-down modulation of the auditory cortex (AC). Here, we asked whether the gerbil cingulate cortex (Cg) sends anatomical projections to the AC that facilitate perceptual performance. To model challenging listening conditions, we used a sound discrimination task in which stimulus parameters were presented in either 'Easy' or 'Hard' blocks (i.e., long or short stimulus duration, respectively). Gerbils achieved statistically identical psychometric performance in Easy and Hard blocks. Anatomical tracing experiments revealed a strong, descending projection from layer 2/3 of the Cg1 subregion of the cingulate cortex to superficial and deep layers of primary and dorsal AC. To determine whether Cg improves task performance under challenging conditions, we bilaterally infused muscimol to inactivate Cg1, and found that psychometric thresholds were degraded for only Hard blocks. To test whether the Cg-to-AC projection facilitates task performance, we chemogenetically inactivated these inputs and found that performance was only degraded during Hard blocks. Taken together, the results reveal a descending cortical pathway that facilitates perceptual performance during challenging listening conditions. Significance Statement Sensory perception often occurs under challenging conditions, such a noisy background or dim environment, yet stimulus sensitivity can remain unaffected. One hypothesis is that cognitive resources are recruited to the task, thereby facilitating perceptual performance. Here, we identify a top-down cortical circuit, from cingulate to auditory cortex in the gerbils, that supports auditory perceptual performance under challenging listening conditions. This pathway is a plausible circuit that supports effortful listening, and may be degraded by hearing loss.
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46
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Balconi M, Acconito C, Allegretta RA, Crivelli D. What Is the Relationship between Metacognition and Mental Effort in Executive Functions? The Contribution of Neurophysiology. Behav Sci (Basel) 2023; 13:918. [PMID: 37998665 PMCID: PMC10669885 DOI: 10.3390/bs13110918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/03/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
Prolonged cognitive effort can be considered one of the core determinants of mental fatigue and may negatively affect the efficacy and efficiency of cognitive performance. Metacognition-understood as a multi-componential set of skills concerning awareness and control of one's own cognition-might reduce such negative outcomes. This study aimed to explore the relation between metacognitive skills, neurocognitive performance, and the level of mental effort as mirrored by electrophysiological (EEG) markers of cognitive load and task demand. A challenging cognitive task was used to prompt and collect metacognition reports, performance data (accuracy and response times-RTs), and physiological markers of mental effort (task-related changes of spectral power for standard EEG frequency bands) via wearable EEG. Data analysis highlighted that different aspects of metacognitive skills are associated with performance as measured by, respectively, accuracy and RTs. Furthermore, specific aspects of metacognitive skills were found to be consistently correlated with EEG markers of cognitive effort, regardless of increasing task demands. Finally, behavioral metrics mirroring the efficiency of information processing were found to be associated with different EEG markers of cognitive effort depending on the low or high demand imposed by the task.
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Affiliation(s)
- Michela Balconi
- International Research Center for Cognitive Applied Neuroscience (IrcCAN), Faculty of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy; (M.B.); (C.A.); (R.A.A.)
- Research Unit in Affective and Social Neuroscience, Department of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy
| | - Carlotta Acconito
- International Research Center for Cognitive Applied Neuroscience (IrcCAN), Faculty of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy; (M.B.); (C.A.); (R.A.A.)
- Research Unit in Affective and Social Neuroscience, Department of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy
| | - Roberta A. Allegretta
- International Research Center for Cognitive Applied Neuroscience (IrcCAN), Faculty of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy; (M.B.); (C.A.); (R.A.A.)
- Research Unit in Affective and Social Neuroscience, Department of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy
| | - Davide Crivelli
- International Research Center for Cognitive Applied Neuroscience (IrcCAN), Faculty of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy; (M.B.); (C.A.); (R.A.A.)
- Research Unit in Affective and Social Neuroscience, Department of Psychology, Università Cattolica del Sacro Cuore, 20123 Milan, Italy
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47
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Silva RB, Ribeiro P, Silva SG, Martins CL. Pre-task Intrinsic Cortical Activity in Novice and Experienced Military Specialists: A Cross-sectional Study. Mil Med 2023; 188:e3514-e3521. [PMID: 37464920 DOI: 10.1093/milmed/usad257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/11/2023] [Accepted: 06/29/2023] [Indexed: 07/20/2023] Open
Abstract
INTRODUCTION Neuroscience studies brain dynamics through the analysis of electrical signals. Cortical activity estimated by electroencephalography brings accurate information about perceptions of human behavior. The examination of resting states in relation to subsequent behaviors indicates that intrinsic cortical activity (ICA) has implications for decision-making processes, especially when inserted in the context of military activities and associated with stress. The objective of this study was to compare the absolute alpha power (AAP) in the ICA in the pre-task moment of novice specialized military (NG) with experienced (ExpG), associating with the level of stress. MATERIALS AND METHODS This was a cross-sectional, observational study with 19 military personnel (32.1 years old), divided into NG (10) and ExpG (9). The ICA was the outcome variable, with the level of stress and the time of specialization in military tasks as the exposure variables. ICA analysis were carried out based on the cortical areas to compare the ICA of the NG with that of the ExpG. The association of stress level with ICA was estimated by linear regression via linear models. RESULTS There was a significant difference in almost all cortical areas, and the averages were always higher in Exp. The high stress level was associated with greater AAP both for the NG and for the ExpG, and at the medium level, the AAP was obtained, varying according to each cortical area. CONCLUSION The AAP in ExpG was significantly higher than that in NG, indicating a lower level of cortical activity and greater efficiency in sensory, motor, and visual tasks.
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Affiliation(s)
- R B Silva
- Military Operations Support Division, Brazilian Army Research Institute of Physical Training, João Luiz Alves Street (without number), Rio de Janeiro 22291090, Brazil
| | - Pedro Ribeiro
- Brain Mapping and Sensory-Motor Integration Laboratory (LabMCISM), Rio de Janeiro 22290140, Brazil
- Graduate Program in Psychiatry and Mental Health (IPUB/UFRJ), Rio de Janeiro 22290140, Brazil
| | - Siqueira Grace Silva
- Health and Quality of life division, Brazilian Army Research Institute of Physical Training, João Luiz Alves Street, Rio de Janeiro 22011090, Brazil
| | - Cx Lilian Martins
- Brain Mapping and Sensory-Motor Integration Laboratory (LabMCISM), Rio de Janeiro 22290140, Brazil
- Graduate Program in Psychiatry and Mental Health (IPUB/UFRJ), Rio de Janeiro 22290140, Brazil
- Research Support Division, Brazilian Army Research Institute of Physical Training, Rio de Janeiro 22091090, Brazil
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48
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Harris S, Bray SR. Investigating real-time physical activity behavior using ecological momentary assessment: Effects of mental fatigue and benefit-cost valuations. PSYCHOLOGY OF SPORT AND EXERCISE 2023; 69:102499. [PMID: 37665934 DOI: 10.1016/j.psychsport.2023.102499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/12/2023] [Accepted: 07/24/2023] [Indexed: 09/06/2023]
Abstract
BACKGROUND Current research investigating the relationship between mental fatigue and physical activity behaviors relies on laboratory-based, experimental studies which lack ecological validity. OBJECTIVE This study used ecological momentary assessment (EMA) to assess feelings of mental fatigue and subjective evaluations (benefits and costs) as predictors of moderate-to-vigorous intensity physical activity in the everyday lives of young adults. METHODS One hundred participants (n = 22 males, n = 78 females, Mage = 20.60 years, 70% meeting or exceeding physical activity guidelines) responded to digital survey prompts up to four times a day and wore an accelerometer for seven consecutive days. Moderate-to-vigorous intensity physical activity in the 180-min time window following each survey prompt was recorded. Data from the 28 survey-moderate-to-vigorous intensity physical activity epochs were analyzed using multilevel mixed-effects linear modelling. RESULTS Higher levels of mental fatigue than one's average level were associated with engaging in fewer moderate-to-vigorous intensity physical activity minutes (p = .004) and lower benefit vs. cost scores (p = .001). Higher benefit vs. cost scores than one's average level were associated with engaging in more minutes of moderate-to-vigorous intensity physical activity (p < .001). CONCLUSIONS Results are the first to demonstrate outside the lab, that mental fatigue experienced in everyday life may amplify the perceived costs of moderate-to-vigorous intensity physical activity, with both factors playing a potential role in moderate-to-vigorous intensity physical activity decision-making. Future research may apply insights gained from this study in design and testing of real-time interventions promoting moderate-to-vigorous intensity physical activity.
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Affiliation(s)
- Sheereen Harris
- Department of Kinesiology, McMaster University, 1280 Main St. W., Hamilton, Ontario, L8S 4K1, Canada.
| | - Steven R Bray
- Department of Kinesiology, McMaster University, 1280 Main St. W., Hamilton, Ontario, L8S 4K1, Canada
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49
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Marois A, Kopf M, Fortin M, Huot-Lavoie M, Martel A, Boyd JG, Gagnon JF, Archambault PM. Psychophysiological models of hypovigilance detection: A scoping review. Psychophysiology 2023; 60:e14370. [PMID: 37350389 DOI: 10.1111/psyp.14370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/24/2023]
Abstract
Hypovigilance represents a major contributor to accidents. In operational contexts, the burden of monitoring/managing vigilance often rests on operators. Recent advances in sensing technologies allow for the development of psychophysiology-based (hypo)vigilance prediction models. Still, these models remain scarcely applied to operational situations and need better understanding. The current scoping review provides a state of knowledge regarding psychophysiological models of hypovigilance detection. Records evaluating vigilance measuring tools with gold standard comparisons and hypovigilance prediction performances were extracted from MEDLINE, PsychInfo, and Inspec. Exclusion criteria comprised aspects related to language, non-empirical papers, and sleep studies. The Quality Assessment tool for Diagnostic Accuracy Studies (QUADAS) and the Prediction model Risk Of Bias ASsessment Tool (PROBAST) were used for bias evaluation. Twenty-one records were reviewed. They were mainly characterized by participant selection and analysis biases. Papers predominantly focused on driving and employed several common psychophysiological techniques. Yet, prediction methods and gold standards varied widely. Overall, we outline the main strategies used to assess hypovigilance, their principal limitations, and we discuss applications of these models.
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Affiliation(s)
- Alexandre Marois
- Thales Research and Technology Canada, Quebec City, Québec, Canada
- School of Psychology and Computer Science, University of Central Lancashire, Preston, Lancashire, United Kingdom
| | - Maëlle Kopf
- Thales Research and Technology Canada, Quebec City, Québec, Canada
| | - Michelle Fortin
- Faculty of Medicine, Université Laval, Quebec City, Québec, Canada
| | | | - Alexandre Martel
- Faculty of Medicine, Université Laval, Quebec City, Québec, Canada
| | - J Gordon Boyd
- Department of Medicine, Queen's University, Kingston, Ontario, Canada
- Kingston General Hospital, Kingston, Ontario, Canada
| | | | - Patrick M Archambault
- Faculty of Medicine, Université Laval, Quebec City, Québec, Canada
- Centre de recherche intégrée pour un système apprenant en santé et services sociaux, Centre intégré de santé et de services sociaux de Chaudière-Appalaches, Lévis, Québec, Canada
- VITAM - Centre de recherche en santé durable, Centre intégré universitaire de santé et de services sociaux de la Capitale-Nationale, Quebec City, Québec, Canada
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50
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Matthews J, Pisauro MA, Jurgelis M, Müller T, Vassena E, Chong TTJ, Apps MAJ. Computational mechanisms underlying the dynamics of physical and cognitive fatigue. Cognition 2023; 240:105603. [PMID: 37647742 DOI: 10.1016/j.cognition.2023.105603] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 09/01/2023]
Abstract
The willingness to exert effort for reward is essential but comes at the cost of fatigue. Theories suggest fatigue increases after both physical and cognitive exertion, subsequently reducing the motivation to exert effort. Yet a mechanistic understanding of how this happens on a moment-to-moment basis, and whether mechanisms are common to both mental and physical effort, is lacking. In two studies, participants reported momentary (trial-by-trial) ratings of fatigue during an effort-based decision-making task requiring either physical (grip-force) or cognitive (mental arithmetic) effort. Using a novel computational model, we show that fatigue fluctuates from trial-to-trial as a function of exerted effort and predicts subsequent choices. This mechanism was shared across the domains. Selective to the cognitive domain, committing errors also induced momentary increases in feelings of fatigue. These findings provide insight into the computations underlying the influence of effortful exertion on fatigue and motivation, in both physical and cognitive domains.
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Affiliation(s)
- Julian Matthews
- RIKEN Center for Brain Science, Wako-shi, Saitama 351-0106, Japan; Turner Institute for Brain and Mental Health, Monash University, Victoria 3800, Australia
| | - M Andrea Pisauro
- Centre for Human Brain Health, School of Psychology, University of Birmingham, United Kingdom; Institute for Mental Health, School of Psychology, University of Birmingham, United Kingdom; Department of Experimental Psychology, University of Oxford, United Kingdom
| | - Mindaugas Jurgelis
- Department of Experimental Psychology, University of Oxford, United Kingdom; School of Psychological Sciences, Monash University, Victoria 3800, Australia; Turner Institute for Brain and Mental Health, Monash University, Victoria 3800, Australia
| | - Tanja Müller
- Department of Experimental Psychology, University of Oxford, United Kingdom; Zurich Center for Neuroeconomics, Department of Economics, University of Zürich, Switzerland
| | - Eliana Vassena
- Behavioural Science Institute, Radbound University, Netherlands
| | - Trevor T-J Chong
- School of Psychological Sciences, Monash University, Victoria 3800, Australia; Turner Institute for Brain and Mental Health, Monash University, Victoria 3800, Australia.
| | - Matthew A J Apps
- Centre for Human Brain Health, School of Psychology, University of Birmingham, United Kingdom; Institute for Mental Health, School of Psychology, University of Birmingham, United Kingdom; Department of Experimental Psychology, University of Oxford, United Kingdom; Christ Church, University of Oxford, United Kingdom.
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