1
|
Gabay AS, Pisauro A, O’Nell KC, Apps MAJ. Social environment-based opportunity costs dictate when people leave social interactions. COMMUNICATIONS PSYCHOLOGY 2024; 2:42. [PMID: 38737130 PMCID: PMC11081926 DOI: 10.1038/s44271-024-00094-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 04/23/2024] [Indexed: 05/14/2024]
Abstract
There is an ever-increasing understanding of the cognitive mechanisms underlying how we process others' behaviours during social interactions. However, little is known about how people decide when to leave an interaction. Are these decisions shaped by alternatives in the environment - the opportunity-costs of connecting to other people? Here, participants chose when to leave partners who treated them with varying degrees of fairness, and connect to others, in social environments with different opportunity-costs. Across four studies we find people leave partners more quickly when opportunity-costs are high, both the average fairness of people in the environment and the effort required to connect to another partner. People's leaving times were accounted for by a fairness-adapted evidence accumulation model, and modulated by depression and loneliness scores. These findings demonstrate the computational processes underlying decisions to leave, and highlight atypical social time allocations as a marker of poor mental health.
Collapse
Affiliation(s)
- Anthony S. Gabay
- Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham, UK
- Institute for Mental Health, School of Psychology, University of Birmingham, Birmingham, UK
- Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - Andrea Pisauro
- School of Psychology, University of Plymouth, Plymouth, UK
| | - Kathryn C. O’Nell
- Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - Matthew A. J. Apps
- Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham, UK
- Institute for Mental Health, School of Psychology, University of Birmingham, Birmingham, UK
- Department of Experimental Psychology, University of Oxford, Oxford, UK
- Christ Church, University of Oxford, Oxford, UK
| |
Collapse
|
2
|
Ryu H, Ju U, Wallraven C. Decoding visual fatigue in a visual search task selectively manipulated via myopia-correcting lenses. Front Neurosci 2024; 18:1307688. [PMID: 38660218 PMCID: PMC11039808 DOI: 10.3389/fnins.2024.1307688] [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: 10/10/2023] [Accepted: 03/25/2024] [Indexed: 04/26/2024] Open
Abstract
Introduction Visual fatigue resulting from sustained, high-workload visual activities can significantly impact task performance and general wellbeing. So far, however, little is known about the underlying brain networks of visual fatigue. This study aimed to identify such potential networks using a unique paradigm involving myopia-correcting lenses known to directly modulate subjectively-perceived fatigue levels. Methods A sample of N = 31 myopia participants [right eye-SE: -3.77D (SD: 2.46); left eye-SE: -3.75D (SD: 2.45)] performed a demanding visual search task with varying difficulty levels, both with and without the lenses, while undergoing fMRI scanning. There were a total of 20 trials, after each of which participants rated the perceived difficulty and their subjective visual fatigue level. We used representational similarity analysis to decode brain regions associated with fatigue and difficulty, analyzing their individual and joint decoding pattern. Results and discussion Behavioral results showed correlations between fatigue and difficulty ratings and above all a significant reduction in fatigue levels when wearing the lenses. Imaging results implicated the cuneus, lingual gyrus, middle occipital gyrus (MOG), and declive for joint fatigue and difficulty decoding. Parts of the lingual gyrus were able to selectively decode perceived difficulty. Importantly, a broader network of visual and higher-level association areas showed exclusive decodability of fatigue (culmen, middle temporal gyrus (MTG), parahippocampal gyrus, precentral gyrus, and precuneus). Our findings enhance our understanding of processing within the context of visual search, attention, and mental workload and for the first time demonstrate that it is possible to decode subjectively-perceived visual fatigue during a challenging task from imaging data. Furthermore, the study underscores the potential of myopia-correcting lenses in investigating and modulating fatigue.
Collapse
Affiliation(s)
- Hyeongsuk Ryu
- Department of Brain and Cognitive Engineering, Korea University, Seoul, Republic of Korea
| | - Uijong Ju
- Department of Information Display, Kyunghee University, Seoul, Republic of Korea
| | - Christian Wallraven
- Department of Brain and Cognitive Engineering, Korea University, Seoul, Republic of Korea
- Department of Artificial Intelligence, Korea University, Seoul, Republic of Korea
| |
Collapse
|
3
|
Correia JP, Domingos C, Witvrouw E, Luís P, Rosa A, Vaz JR, Freitas SR. Brain and muscle activity during fatiguing maximum-speed knee movement. J Appl Physiol (1985) 2024; 136:200-212. [PMID: 38059285 DOI: 10.1152/japplphysiol.00145.2023] [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: 03/07/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 12/08/2023] Open
Abstract
Although the underlying mechanisms behind upper limb (e.g., finger) motor slowing during movements performed at the maximum voluntary rate have been explored, the same cannot be said for the lower limb. This is especially relevant considering the lower limb's larger joints and different functional patterns. Despite the similar motor control base, previously found differences in movement patterns and segment inertia may lead to distinct central and peripheral manifestations of fatigue in larger joint movement. Therefore, we aimed to explore these manifestations in a fatiguing knee maximum movement rate task by measuring brain and muscle activity, as well as brain-muscle coupling using corticomuscular coherence, during this task. A significant decrease in knee movement rate up to half the task duration was observed. After an early peak, brain activity showed a generalized decrease during the first half of the task, followed by a plateau, whereas knee flexor muscle activity showed a continuous decline. A similar decline was also seen in corticomuscular coherence but for both flexor and extensor muscles. The electrophysiological manifestations associated with knee motor slowing therefore showed some common and some distinct aspects compared with smaller joint tasks. Both central and peripheral manifestations of fatigue were observed; the changes seen in both EEG and electromyographic (EMG) variables suggest that multiple mechanisms were involved in exercise regulation and fatigue development.NEW & NOTEWORTHY The loss of knee movement rate with acute fatigue induced by high-speed movement is associated with both central and peripheral electrophysiological changes, such as a decrease in EEG power, increased agonist-antagonist cocontraction, and impaired brain-muscle coupling. These findings had not previously been reported for the knee joint, which shows functional and physiological differences compared with the existing findings for smaller upper limb joints.
Collapse
Affiliation(s)
- José Pedro Correia
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal
| | - Christophe Domingos
- Department of Clinical Psychology, Institute of Psychology, Jagiellonian University, Krakow, Poland
- Centro de Investigação em Qualidade de Vida (CIEQV), Escola Superior de Desporto de Rio Maior, Instituto Politécnico de Santarém, Rio Maior, Portugal
| | - Erik Witvrouw
- Department of Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Pedro Luís
- Evolutionary Systems and Biomedical Engineering Lab (LaSEEB), Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Agostinho Rosa
- Evolutionary Systems and Biomedical Engineering Lab (LaSEEB), Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - João R Vaz
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal
- Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Monte da Caparica, Portugal
| | - Sandro R Freitas
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal
| |
Collapse
|
4
|
Altermatt M, Thomas FA, Wenderoth N. Movement predictability modulates sensorimotor processing. Front Hum Neurosci 2023; 17:1237407. [PMID: 38053650 PMCID: PMC10694232 DOI: 10.3389/fnhum.2023.1237407] [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: 06/13/2023] [Accepted: 10/30/2023] [Indexed: 12/07/2023] Open
Abstract
Introduction An important factor for optimal sensorimotor control is how well we are able to predict sensory feedback from internal and external sources during movement. If predictability decreases due to external disturbances, the brain is able to adjust muscle activation and the filtering of incoming sensory inputs. However, little is known about sensorimotor adjustments when predictability is increased by availability of additional internal feedback. In the present study we investigated how modifications of internal and external sensory feedback influence the control of muscle activation and gating of sensory input. Methods Co-activation of forearm muscles, somatosensory evoked potentials (SEP) and short afferent inhibition (SAI) were assessed during three object manipulation tasks designed to differ in the predictability of sensory feedback. These included manipulation of a shared object with both hands (predictable coupling), manipulation of two independent objects without (uncoupled) and with external interference on one of the objects (unpredictable coupling). Results We found a task-specific reduction in co-activation during the predictable coupling compared to the other tasks. Less sensory gating, reflected in larger subcortical SEP amplitudes, was observed in the unpredictable coupling task. SAI behavior was closely linked to the subcortical SEP component indicating an important function of subcortical sites in predictability related SEP gating and their direct influence on M1 inhibition. Discussion Together, these findings suggest that the unpredictable coupling task cannot only rely on predictive forward control and is compensated by enhancing co-activation and increasing the saliency for external stimuli by reducing sensory gating at subcortical level. This behavior might serve as a preparatory step to compensate for external disturbances and to enhance processing and integration of all incoming external stimuli to update the current sensorimotor state. In contrast, predictive forward control is accurate in the predictable coupling task due to the integrated sensory feedback from both hands where sensorimotor resources are economized by reducing muscular co-activation and increasing sensory gating.
Collapse
|
5
|
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.
Collapse
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.
| |
Collapse
|
6
|
Casamento-Moran A, Mooney RA, Chib VS, Celnik PA. Cerebellar Excitability Regulates Physical Fatigue Perception. J Neurosci 2023; 43:3094-3106. [PMID: 36914263 PMCID: PMC10146467 DOI: 10.1523/jneurosci.1406-22.2023] [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: 07/20/2022] [Revised: 01/10/2023] [Accepted: 02/22/2023] [Indexed: 03/14/2023] Open
Abstract
Fatigue is the subjective sensation of weariness, increased sense of effort, or exhaustion and is pervasive in neurologic illnesses. Despite its prevalence, we have a limited understanding of the neurophysiological mechanisms underlying fatigue. The cerebellum, known for its role in motor control and learning, is also involved in perceptual processes. However, the role of the cerebellum in fatigue remains largely unexplored. We performed two experiments to examine whether cerebellar excitability is affected after a fatiguing task and its association with fatigue. Using a crossover design, we assessed cerebellar inhibition (CBI) and perception of fatigue in humans before and after "fatigue" and "control" tasks. Thirty-three participants (16 males, 17 females) performed five isometric pinch trials with their thumb and index finger at 80% maximum voluntary capacity (MVC) until failure (force <40% MVC; fatigue) or at 5% MVC for 30 s (control). We found that reduced CBI after the fatigue task correlated with a milder perception of fatigue. In a follow-up experiment, we investigated the behavioral consequences of reduced CBI after fatigue. We measured CBI, perception of fatigue, and performance during a ballistic goal-directed task before and after the same fatigue and control tasks. We replicated the observation that reduced CBI after the fatigue task correlated with a milder perception of fatigue and found that greater endpoint variability after the fatigue task correlated with reduced CBI. The proportional relation between cerebellar excitability and fatigue indicates a role of the cerebellum in the perception of fatigue, which might come at the expense of motor control.SIGNIFICANCE STATEMENT Fatigue is one of the most common and debilitating symptoms in neurologic, neuropsychiatric, and chronic illnesses. Despite its epidemiological importance, there is a limited understanding of the neurophysiological mechanisms underlying fatigue. In a series of experiments, we demonstrate that decreased cerebellar excitability relates to lesser physical fatigue perception and worse motor control. These results showcase the role of the cerebellum in fatigue regulation and suggest that fatigue- and performance-related processes might compete for cerebellar resources.
Collapse
Affiliation(s)
- Agostina Casamento-Moran
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, Maryland 21287
| | - Ronan A Mooney
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, Maryland 21287
| | - Vikram S Chib
- Kennedy Krieger Institute, Baltimore, Maryland 21287
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland 21287
| | - Pablo A Celnik
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, Maryland 21287
- Department of Neuroscience, Johns Hopkins University, Baltimore, Maryland 21287
| |
Collapse
|
7
|
Correia JP, Vaz JR, Domingos C, Freitas SR. From thinking fast to moving fast: motor control of fast limb movements in healthy individuals. Rev Neurosci 2022; 33:919-950. [PMID: 35675832 DOI: 10.1515/revneuro-2021-0171] [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: 12/21/2021] [Accepted: 05/09/2022] [Indexed: 12/14/2022]
Abstract
The ability to produce high movement speeds is a crucial factor in human motor performance, from the skilled athlete to someone avoiding a fall. Despite this relevance, there remains a lack of both an integrative brain-to-behavior analysis of these movements and applied studies linking the known dependence on open-loop, central control mechanisms of these movements to their real-world implications, whether in the sports, performance arts, or occupational setting. In this review, we cover factors associated with the planning and performance of fast limb movements, from the generation of the motor command in the brain to the observed motor output. At each level (supraspinal, peripheral, and motor output), the influencing factors are presented and the changes brought by training and fatigue are discussed. The existing evidence of more applied studies relevant to practical aspects of human performance is also discussed. Inconsistencies in the existing literature both in the definitions and findings are highlighted, along with suggestions for further studies on the topic of fast limb movement control. The current heterogeneity in what is considered a fast movement and in experimental protocols makes it difficult to compare findings in the existing literature. We identified the role of the cerebellum in movement prediction and of surround inhibition in motor slowing, as well as the effects of fatigue and training on central motor control, as possible avenues for further research, especially in performance-driven populations.
Collapse
Affiliation(s)
- José Pedro Correia
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1495-751, Cruz Quebrada, Portugal.,Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1495-751, Cruz Quebrada, Portugal
| | - João R Vaz
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1495-751, Cruz Quebrada, Portugal.,Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1495-751, Cruz Quebrada, Portugal
| | - Christophe Domingos
- CIEQV, Escola Superior de Desporto de Rio Maior, Instituto Politécnico de Santarém, Av. Dr. Mário Soares nº 110, 2040-413, Rio Maior, Portugal
| | - Sandro R Freitas
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1495-751, Cruz Quebrada, Portugal
| |
Collapse
|
8
|
Range of Motion Remains Constant as Movement Rate Decreases During a Repetitive High-Speed Knee Flexion-Extension Task. Motor Control 2022; 26:465-476. [PMID: 35580846 DOI: 10.1123/mc.2021-0144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/01/2022] [Accepted: 04/02/2022] [Indexed: 11/18/2022]
Abstract
Maintaining the range of motion in repetitive movement tasks is a crucial point since it directly influences the movement rate. Ensuring the movement amplitude can be reliably maintained when motor function is assessed by measuring the maximum movement rate is therefore a key consideration. However, the performed range of motion during such tasks is often not reported. This study aimed to determine whether individuals are able to maintain an intended range of motion during a knee flexion/extension maximum movement rate task in the absence of tactile and visual feedback. Twelve healthy male individuals performed knee flexion/extension at maximum speed for eight 10-s blocks in a 45° arc between 45° and 90°. The range of motion was monitored using a marker system and the movement rate was measured. The performed range of motion was not significantly different from the 45° arc during the task despite a 13.47% decrease in movement rate from the start to the end of the task. Nevertheless, there was only anecdotal evidence of no difference from 45° in most blocks, while on the second and seventh blocks, there was anecdotal evidence of differences in the Bayesian one-sample test. There was also no significant shift in the maximum flexion/extension angles throughout the task. Healthy male individuals were thus able to perform a consistent average predefined knee range of motion in a maximum movement rate task despite decreases in movement rate. This was achieved without constraint-inducing devices during the task, using only basic equipment and verbal feedback.
Collapse
|
9
|
Vila‐Villar A, Naya‐Fernández M, Madrid A, Madinabeitia‐Mancebo E, Robles‐García V, Cudeiro J, Arias P. Exploring the role of the left
DLPFC
in fatigue during unresisted rhythmic movements. Psychophysiology 2022; 59:e14078. [PMID: 35428988 PMCID: PMC9539568 DOI: 10.1111/psyp.14078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 10/20/2021] [Accepted: 03/30/2022] [Indexed: 01/17/2023]
Abstract
Understanding central fatigue during motor activities is important in neuroscience and different medical fields. The central mechanisms of motor fatigue are known in depth for isometric muscle contractions; however, current knowledge about rhythmic movements and central fatigue is rather scarce. In this study, we explored the role of an executive area (left dorsolateral prefrontal cortex [DLPFC]) in fatigue development during rhythmic movement execution, finger tapping (FT) at the maximal rate, and fatigue after effects on the stability of rhythmic patterns. Participants (n = 19) performed six sets of unresisted FT (with a 3 min rest in‐between). Each set included four interleaved 30 s repetitions of self‐selected (two repetitions) and maximal rate FT (two repetitions) without rest in‐between. Left DLPFC involvement in the task was perturbed by transcranial static magnetic stimulation (tSMS) in two sessions (one real and one sham). Moreover, half of the self‐selected FT repetitions were performed concurrently with a demanding cognitive task, the Stroop test. Compared with sham stimulation, real tSMS stimulation prevented waning in tapping frequency at the maximal rate without affecting perceived levels of fatigue. Participants' engagement in the Stroop test just prior to maximal FT reduced the movement amplitude during this mode of execution. Movement variability at self‐selected rates increased during Stroop execution, especially under fatigue previously induced by maximal FT. Our results indicate cognitive‐motor interactions and a prominent role of the prefrontal cortex in fatigue and the motor control of simple repetitive movement patterns. We suggest the need to approach motor fatigue including cognitive perspectives. We show the fundamental role of executive areas in fatigue caused by very simple repetitive movements. Fatigue developed less during the maximal frequency of movement production, while the left DLPFC received magnetic stimulation (in right‐handers). The role of cognitive‐motor interaction in fine motor control was also clear when participants engaged in cognitive tasks. At the clinical level, our work reinforces the need to treat fatigue from a comprehensive perspective.
Collapse
Affiliation(s)
- Aranza Vila‐Villar
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
| | - Mariña Naya‐Fernández
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
| | - Antonio Madrid
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
| | - Elena Madinabeitia‐Mancebo
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
| | - Verónica Robles‐García
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
| | - Javier Cudeiro
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
- Centro de Estimulación Cerebral de Galicia A Coruña Spain
| | - Pablo Arias
- Department of Physiotherapy, Medicine and Biomedical Sciences and INEF Galicia Universidade da Coruña, NEUROcom (Neuroscience and Motor Control Group) and Biomedical Institute of A Coruña (INIBIC) A Coruña Spain
| |
Collapse
|
10
|
Greenhouse I. Inhibition for gain modulation in the motor system. Exp Brain Res 2022; 240:1295-1302. [DOI: 10.1007/s00221-022-06351-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/15/2022] [Indexed: 01/10/2023]
|
11
|
Okinaka M, Wada T. The effect of static stretching on key hits and subjective fatigue in eSports. J Phys Ther Sci 2021; 33:891-897. [PMID: 34873369 PMCID: PMC8636918 DOI: 10.1589/jpts.33.891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/08/2021] [Indexed: 11/24/2022] Open
Abstract
[Purpose] To explore the effects of static stretching for 20 s on key hits and
subjective fatigue in an eSports-like setting. [Participants and Methods] The participants
comprised of 15 healthy males who were instructed to hit a particular key on a computer
keyboard using the left ring finger to achieve the maximum number of hits possible over a
period of 30 s. Subjective fatigue of the forearm was assessed using a visual analog scale
(VAS) before the experiment and after each trial. Trials 1, 2, and 3 were conducted in
succession, with an inter-trial interval of 60 s to ensure a loaded state. Static
stretching for 20 s preceded Trial 4. [Results] Over the first three trials, the number of
key hits in the first 10 s gradually decreased, while the feeling of subjective fatigue
gradually increased. After stretching, the number of key hits in the first 10 s of Trial 4
was similar to that observed in Trial 1, and there was no increase in subjective fatigue.
[Conclusion] Static stretching for 20 s restored the number of key hits for 10 s after
stretching to that before the load application and suppressed the increase in subjective
fatigue.
Collapse
Affiliation(s)
- Miyono Okinaka
- Degree Programs in Comprehensive Human Sciences, Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba: 1-29-3 Otsuka, Bunkyou-ku, Tokyo 112-0012, Japan
| | - Tsunehiko Wada
- Degree Programs in Comprehensive Human Sciences, Doctoral Program in Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba: 1-29-3 Otsuka, Bunkyou-ku, Tokyo 112-0012, Japan
| |
Collapse
|
12
|
Goetschalckx M, Van Geel F, Meesen R, Triccas LT, Geraerts M, Moumdjian L, Feys P. Interlimb Coordination Performance in Seated Position in Persons With Multiple Sclerosis: Reduced Amplitude Over 6 min and Higher Coordination Variability in Persons With Walking Fatigability. Front Hum Neurosci 2021; 15:765254. [PMID: 34744669 PMCID: PMC8564500 DOI: 10.3389/fnhum.2021.765254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/29/2021] [Indexed: 11/21/2022] Open
Abstract
Background: Walking fatigability is prevalent in MS and can be measured by a percentage distance decline during a 6-min walking test. Walking is characterized by an accurate and consistent interlimb antiphase coordination pattern. A decline in coordination each minute during a 6-min walking test is observed in persons with MS (pwMS). Measuring coordination during a 6-min seated coordination task with minimized balance and strength requirements, is assumed to examine a more fundamental interlimb antiphase coordination pattern in pwMS. This research aimed to answer the following research question: How does interlimb antiphase coordination pattern change during a seated coordination task in pwMS with walking fatigability (WF), non-walking fatigability (NWF) and Healthy Controls (HC)? Methods: Thirty-five pwMS and 13 HC participated. Interlimb coordination was assessed by a seated 6-min coordination task (6MCT) with the instruction to perform antiphase lower leg movements as fast as possible. Outcomes were Phase Coordination Index (PCI) and movement parameters (amplitude, frequency). Results: Mixed models revealed a significant effect of time for the the variability of generating interlimb movements, with a difference in mean values between WF and HC. A significant group∗time interaction effect was found for movement amplitude, represented by a significant decrease in movement amplitude in the WF group from minute 1 to the end of the task. Conclusion: The higher variability in interlimb coordination and decrease in movement amplitude over time during the 6MCT in the WF group could be an indicator of decreased control of fundamental antiphase coordination pattern in pwMS with walking fatigability. Clinical Trial Registration:www.clinicaltrials.gov, identifier NCT04142853 (registration date: October 29, 2019) and NCT03938558 (registration date: May 6, 2019).
Collapse
Affiliation(s)
- Mieke Goetschalckx
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
| | - Fanny Van Geel
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium.,Universitair Multiple Sclerosis Centrum (UMSC), Hasselt-Pelt, Hasselt, Belgium
| | - Raf Meesen
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
| | - Lisa Tedesco Triccas
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
| | - Marc Geraerts
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
| | - Lousin Moumdjian
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium.,Universitair Multiple Sclerosis Centrum (UMSC), Hasselt-Pelt, Hasselt, Belgium.,Faculty of Art and Philosophy, IPEM, Institute of Psychoacoustic and Electronic Music, Ghent University, Ghent, Belgium
| | - Peter Feys
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium.,Universitair Multiple Sclerosis Centrum (UMSC), Hasselt-Pelt, Hasselt, Belgium
| |
Collapse
|
13
|
Prak RF, Marsman JBC, Renken R, van der Naalt J, Zijdewind I. Fatigue following mild traumatic brain injury relates to visual processing and effort perception in the context of motor performance. Neuroimage Clin 2021; 32:102783. [PMID: 34425550 PMCID: PMC8379650 DOI: 10.1016/j.nicl.2021.102783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 08/02/2021] [Accepted: 08/06/2021] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Following mild traumatic brain injury (mTBI), a substantial number of patients experience disabling fatigue for months after the initial injury. To date, the underlying mechanisms of fatigue remain unclear. Recently, it was shown that mTBI patients with persistent fatigue do not demonstrate increased performance fatigability (i.e., objective performance decline) during a sustained motor task. However, it is not known whether the neural activation required to sustain this performance is altered after mTBI. METHODS Blood oxygen level-dependent (BOLD) fMRI data were acquired from 19 mTBI patients (>3 months post-injury) and 19 control participants during two motor tasks. Force was recorded from the index finger abductors of both hands during submaximal contractions and a 2-minute maximal voluntary contraction (MVC) with the right hand. Voluntary muscle activation (i.e., CNS drive) was indexed during the sustained MVC using peripheral nerve stimulation. Fatigue was quantified using the Fatigue Severity Scale (FSS) and Modified Fatigue Impact Scale (MFIS). Questionnaire, task, and BOLD data were compared across groups, and linear regression was used to evaluate the relationship between BOLD-activity and fatigue in the mTBI group. RESULTS The mTBI patients reported significantly higher levels of fatigue (FSS: 5.3 vs. 2.6, p < 0.001). Both mTBI- and control groups demonstrated significant performance fatigability during the sustained MVC, but no significant differences in task performance or BOLD-activity were observed between groups. However, mTBI patients reporting higher FSS scores showed increased BOLD-activity in the bilateral visual cortices (mainly extrastriate) and the left midcingulate gyrus. Furthermore, across all participants mean voluntary muscle activation during the sustained MVC correlated with long lasting post-contraction BOLD-activation in the right insula and midcingulate cortex. CONCLUSION The fMRI findings suggest that self-reported fatigue in mTBI may relate to visual processing and effort perception. Long lasting activation associated with high levels of CNS drive might be related to changes in cortical homeostasis in the context of high effort.
Collapse
Affiliation(s)
- Roeland F Prak
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
| | - Jan-Bernard C Marsman
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Remco Renken
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Joukje van der Naalt
- Department of Neurology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Inge Zijdewind
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| |
Collapse
|
14
|
Peripheral-central interplay for fatiguing unresisted repetitive movements: a study using muscle ischaemia and M1 neuromodulation. Sci Rep 2021; 11:2075. [PMID: 33483562 PMCID: PMC7822864 DOI: 10.1038/s41598-020-80743-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 12/23/2020] [Indexed: 11/21/2022] Open
Abstract
Maximal-rate rhythmic repetitive movements cannot be sustained for very long, even if unresisted. Peripheral and central mechanisms of fatigue, such as the slowing of muscle relaxation and an increase in M1-GABAb inhibition, act alongside the reduction of maximal execution rates. However, maximal muscle force appears unaffected, and it is unknown whether the increased excitability of M1 GABAergic interneurons is an adaptation to the waning of muscle contractility in these movements. Here, we observed increased M1 GABAb inhibition at the end of 30 s of a maximal-rate finger-tapping (FT) task that caused fatigue and muscle slowdown in a sample of 19 healthy participants. The former recovered a few seconds after FT ended, regardless of whether muscle ischaemia was used to keep the muscle slowed down. Therefore, the increased excitability of M1-GABAb circuits does not appear to be mediated by afferent feedback from the muscle. In the same subjects, continuous (inhibitory) and intermittent (excitatory) theta-burst stimulation (TBS) was used to modulate M1 excitability and to understand the underlying central mechanisms within the motor cortex. The effect produced by TBS on M1 excitability did not affect FT performance. We conclude that fatigue during brief, maximal-rate unresisted repetitive movements has supraspinal components, with origins upstream of the motor cortex.
Collapse
|
15
|
Giboin LS, Reunis T, Gruber M. Corticospinal properties are associated with sensorimotor performance in action video game players. Neuroimage 2020; 226:117576. [PMID: 33221450 DOI: 10.1016/j.neuroimage.2020.117576] [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: 08/10/2020] [Revised: 10/10/2020] [Accepted: 11/10/2020] [Indexed: 10/23/2022] Open
Abstract
Notwithstanding the apparent demands regarding fine motor skills that are required to perform in action video games, the motor nervous system of players has not been studied systematically. In the present study, we hypothesized to find differences in sensorimotor performance and corticospinal characteristics between action video game players (Players) and Controls. We tested sensorimotor performance in video games tasks and used transcranial magnetic stimulation (TMS) to measure motor map, input-output (IO) and short intra-cortical inhibition (SICI) curves in the first dorsal interosseous (FDI) muscle of Players (n = 18) and Control (n = 18). Players scored higher in performance tests and had stronger SICI and higher motor evoked potential (MEP) amplitudes. Multiple linear regressions showed that Players and Control differed with respect to their relation between reaction time and corticospinal excitability. However, we did not find different motor map topography or different IO curves for Players when compared to Controls. Action video game players showed an increased efficiency of motor cortical inhibitory and excitatory neural networks. Players also showed a different relation of MEPs with reaction time. The present study demonstrates the potential of action video game players as an ideal population to study the mechanisms underlying visuomotor performance and sensorimotor learning.
Collapse
Affiliation(s)
- Louis-Solal Giboin
- Sensorimotor Performance Lab, Human Performance Research Centre, Department of Sport Science, University of Konstanz, Germany.
| | - Tom Reunis
- Sensorimotor Performance Lab, Human Performance Research Centre, Department of Sport Science, University of Konstanz, Germany
| | - Markus Gruber
- Sensorimotor Performance Lab, Human Performance Research Centre, Department of Sport Science, University of Konstanz, Germany
| |
Collapse
|
16
|
Bönstrup M, Iturrate I, Hebart MN, Censor N, Cohen LG. Mechanisms of offline motor learning at a microscale of seconds in large-scale crowdsourced data. NPJ SCIENCE OF LEARNING 2020; 5:7. [PMID: 32550003 PMCID: PMC7272649 DOI: 10.1038/s41539-020-0066-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 04/17/2020] [Indexed: 05/25/2023]
Abstract
Performance improvements during early human motor skill learning are suggested to be driven by short periods of rest during practice, at the scale of seconds. To reveal the unknown mechanisms behind these "micro-offline" gains, we leveraged the sampling power offered by online crowdsourcing (cumulative N over all experiments = 951). First, we replicated the original in-lab findings, demonstrating generalizability to subjects learning the task in their daily living environment (N = 389). Second, we show that offline improvements during rest are equivalent when significantly shortening practice period duration, thus confirming that they are not a result of recovery from performance fatigue (N = 118). Third, retroactive interference immediately after each practice period reduced the learning rate relative to interference after passage of time (N = 373), indicating stabilization of the motor memory at a microscale of several seconds. Finally, we show that random termination of practice periods did not impact offline gains, ruling out a contribution of predictive motor slowing (N = 71). Altogether, these results demonstrate that micro-offline gains indicate rapid, within-seconds consolidation accounting for early skill learning.
Collapse
Affiliation(s)
- Marlene Bönstrup
- Human Cortical Physiology and Neurorehabilitation Section, National Institute of Neurological Disorders and Stroke, Bethesda, MD 20814 USA
| | - Iñaki Iturrate
- Human Cortical Physiology and Neurorehabilitation Section, National Institute of Neurological Disorders and Stroke, Bethesda, MD 20814 USA
| | - Martin N. Hebart
- Laboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, MD 20814 USA
| | - Nitzan Censor
- School of Psychological Sciences and Sagol School of Neuroscience, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Leonardo G. Cohen
- Human Cortical Physiology and Neurorehabilitation Section, National Institute of Neurological Disorders and Stroke, Bethesda, MD 20814 USA
| |
Collapse
|
17
|
Seidel-Marzi O, Ragert P. Anodal transcranial direct current stimulation reduces motor slowing in athletes and non-athletes. BMC Neurosci 2020; 21:26. [PMID: 32487077 PMCID: PMC7268396 DOI: 10.1186/s12868-020-00573-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 05/20/2020] [Indexed: 01/07/2023] Open
Abstract
Background Motor fatigability describes a phenomenon that occurs when exhaustive exercise or physically demanding tasks are executed over an extended period of time. Concerning fast repetitive movements, it is noticeable by a reduction in movement speed (motor slowing, MoSlo) and occurs due to both central and peripheral factors. The aim of the present study was to examine the presence of MoSlo during hand- (HTT) and foot-tapping tasks (FTT) comparing trained football (FB) and handball players (HB) and non-athletes (NA). Furthermore, we were interested in how far anodal transcranial direct current stimulation (tDCS) might be capable of modulating MoSlo as compared to sham. Methods A total number of 46 participants were enrolled in a sham-controlled, double-blinded, cross-over study. HTT and FTT were performed before, during, after as well as 30 min after 20 min of tDCS over the leg area of the primary motor cortex (M1). Results We could demonstrate that MoSlo during HTT and FTT is a general phenomenon that is observed independent of the type of sports and/or training status. Furthermore, we were able to show a tDCS-induced reduction in MoSlo specifically during FTT in both trained athletes and NA. No such effects could be observed for HTT, indicating local specificity of tDCS-induced effects on a behavioral level. Conclusion We could demonstrate that tDCS is capable of reducing motor fatigability during fast repetitive movements. These findings are of pivotal interest for many sports where fatigability resistance is a limiting factor in maintaining repetitive movement patterns.
Collapse
Affiliation(s)
- Oliver Seidel-Marzi
- Institute for General Kinesiology and Exercise Science, Faculty of Sport Science, University of Leipzig, Jahnallee 59, 04109, Leipzig, Germany. .,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstraße 1a, 04103, Leipzig, Germany.
| | - Patrick Ragert
- Institute for General Kinesiology and Exercise Science, Faculty of Sport Science, University of Leipzig, Jahnallee 59, 04109, Leipzig, Germany.,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstraße 1a, 04103, Leipzig, Germany
| |
Collapse
|