1
|
Liu XX, Wang G, Zhang R, Ren Z, Wang D, Liu J, Wang J, Gao Y. Sensory reweighting and self-motion perception for postural control under single-sensory and multisensory perturbations in older Tai Chi practitioners. Front Hum Neurosci 2024; 18:1482752. [PMID: 39555493 PMCID: PMC11565703 DOI: 10.3389/fnhum.2024.1482752] [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: 08/23/2024] [Accepted: 10/18/2024] [Indexed: 11/19/2024] Open
Abstract
Purpose Impairment in perception and sensory reweighting could predispose older adults to falls. This exploratory study aimed to investigate the differences in sensory reweighting and self-motion perception for postural control under single-sensory and multisensory perturbations between older Tai Chi (TC) practitioners and healthy active older controls. Methods Twenty-four TC practitioners and 23 age-matched non-practitioners were recruited in this observational study. Participants stood on a force plate with or without a foam surface (baseline), followed by 36 s of visual rotation stimuli, vestibular rotation stimuli, or reduced somatosensory input (adaptation), and then continued standing for 44 s (reintegration). The center-of-pressure (COP) trajectories and self-motion perception were recorded. COP signals were analyzed using traditional sway, multiscale entropy, and wavelet analysis methods and the time-window-of-integration model to examine the postural balance performance and the flexibility and speed of sensory reweighting. Results Significant interaction effects of group with sensory perturbation and group with time window on COP parameters were observed (p < 0.05). Compared with non-practitioners, TC practitioners exhibited higher postural stability and complexity as the difficulty of standing tasks increased and smaller time windows to return to baseline levels as disturbance time evolved. Moreover, TC practitioners exhibited significantly greater weighting on unperturbed sensory systems, lower weighting on perturbed sensory systems for postural control, and higher self-motion perception ability under visual, vestibular, and visual-vestibular perturbations (p < 0.05). Conclusion Long-term TC practitioners exhibited superior postural stability and adaptability under challenging sensory perturbations, and smaller amplitudes and shorter durations of postural aftereffects over time during adaptation and reintegration. These improvements may be partly attributed to more rapid and flexible sensory reweighting and improved self-motion perception for postural control.
Collapse
Affiliation(s)
- Xiao-xia Liu
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
| | - Guozheng Wang
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
- Taizhou Key Laboratory of Medical Devices and Advanced Materials, Taizhou Institute of Zhejiang University, Taizhou, China
| | - Ruixuan Zhang
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
| | - Zhuying Ren
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
| | - Di Wang
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
| | - Jun Liu
- Taizhou Key Laboratory of Medical Devices and Advanced Materials, Taizhou Institute of Zhejiang University, Taizhou, China
- Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, China
| | - Jian Wang
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
- Center for Psychological Science, Zhejiang University, Hangzhou, China
| | - Ying Gao
- Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China
| |
Collapse
|
2
|
Moccia L, Bartolucci G, Pepe M, Marcelli I, Grisoni F, Brugnami A, Caso R, Bardi F, Calderoni C, Giannico AM, Benini E, Di Nicola M, Sani G. Heart Rate Variability as a Potential Predictor of Response to Intranasal Esketamine in Patients with Treatment-Resistant Depression: A Preliminary Report. J Clin Med 2024; 13:4767. [PMID: 39200909 PMCID: PMC11355362 DOI: 10.3390/jcm13164767] [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: 07/03/2024] [Revised: 08/02/2024] [Accepted: 08/09/2024] [Indexed: 09/02/2024] Open
Abstract
Background: Esketamine has received approval as a nasal spray (ESK-NS) for treatment-resistant depression (TRD) and evidence from real-world investigations has confirmed the effectiveness of ESK-NS, albeit with interindividual differences in response. Heart rate variability (HRV), defined as the fluctuation in time interval between consecutive heartbeats, can be used to measure autonomic dysfunction in psychiatric disorders and its role has been investigated in diagnosis and prognosis of depression. Methods: This preliminary report aims to evaluate HRV parameters and their association with treatment outcome in 18 patients (55.6% males, 55.6 ± 9.39 years old) with TRD treated with a target dose of ESK-NS for one month (mean dose: 80.9 ± 9.05 mg). The Beck Depression Inventory (BDI) and a 3 min resting electrocardiogram were used to assess changes in depressive symptoms and HRV measurements before and after treatment. Results: Responders (n = 8, 44.5%; based on ≥30% BDI scores reduction) displayed lower HRV values than non-responders at baseline (p = 0.019), which increased at one month (p = 0.038). Receiver-Operating Characteristic (ROC) curves obtained from a logistic regression displayed a discriminative potential for baseline HRV in our sample (AUC = 0.844). Conclusions: These preliminary observations suggest a mutual interaction between esketamine and HRV, especially in relation to treatment response. Further studies are required to investigate electrophysiological profiles among predictors of response to ESK-NS and allow for personalized intervention strategies in TRD that still represent a public health concern.
Collapse
Affiliation(s)
- Lorenzo Moccia
- Department of Psychiatry, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
| | - Giovanni Bartolucci
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Maria Pepe
- Department of Psychiatry, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Ilaria Marcelli
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Flavia Grisoni
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Andrea Brugnami
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Romina Caso
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Francesca Bardi
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Claudia Calderoni
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | | | - Elisabetta Benini
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Marco Di Nicola
- Department of Psychiatry, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Gabriele Sani
- Department of Psychiatry, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| |
Collapse
|
3
|
Di Carlo F, Vicinelli MC, Pettorruso M, De Risio L, Migliara G, Baccolini V, Trioni J, Grant JE, Dell'Osso B, Martinotti G. Connected minds in disconnected bodies: Exploring the role of interoceptive sensibility and alexithymia in problematic use of the internet. Compr Psychiatry 2024; 129:152446. [PMID: 38159504 DOI: 10.1016/j.comppsych.2023.152446] [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: 07/27/2023] [Revised: 11/02/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024] Open
Abstract
INTRODUCTION The ever-increasing prominence of the internet and digital technology in our society requires a deeper examination of how these developments alter perception of our bodies and emotions. One such consequence is the emergence of Problematic Use of the Internet (PUI) - an array of compulsive or addictive behaviors mediated by the web that detrimentally affect an individual's functioning. This suggests that some people may be shifting their consciousness from the physical realm to the digital world. The objective of this study was to investigate how shortcomings in interoception (the sensibility to bodily signals) and alexithymia (an inability to identify and express emotions) might contribute to PUI. METHODS The Internet Addiction Test (IAT), the Toronto Alexithymia Scale (TAS-20), and the Multidimensional Assessment of Interoceptive Awareness (MAIA) were used to assess a sample of 1076 adolescents and young adults aged between 16 and 26 years via an online survey. Data analysis was based on t-test, correlations and multivariate regression. RESULTS 26.8% (n = 288) of participants met the criteria for moderate PUI. Individuals with PUI displayed higher levels of alexithymia (p < 0.001) and diminished abilities in certain aspects of interoceptive sensibility, including placing trust in their own bodily signals (p = 0.006), not responding excessively to uncomfortable sensations with worry (p < 0.001), and not denying them (p = 0.006). Multivariate modelling revealed associations between PUI and the following factors: having a boyfriend/girlfriend (aOR = 5.70), substance use (aOR = 1.78), difficulty in identifying feelings (aOR = 1.09), externally oriented thinking (aOR = 1.05), low disposition in perceiving body sensations (aOR = 0.25), tendency to become distracted (aOR = 0.82) or excessively worried (aOR = 0.11) in the face of pain. Furthermore, the analysis indicated how these aspects of body perception may be interrelated, either enhancing or reducing the risk of PUI when examined individually, collectively, or in combination. CONCLUSIONS This study underlines the potential connection between difficulties in the mind-body interaction and the development of PUI. It suggests a bidirectional relationship between excessive digital device use and distorted bodily interoceptive processes in PUI, reinforcing the notion that individuals struggling with emotion identification and expression may be more prone to excessive internet usage. To further comprehend the relevance of these constructs in PUI, it is necessary to conduct more targeted investigations and longitudinal studies.
Collapse
Affiliation(s)
- Francesco Di Carlo
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti, Chieti, Italy
| | - Maria Chiara Vicinelli
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti, Chieti, Italy
| | - Mauro Pettorruso
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti, Chieti, Italy.
| | - Luisa De Risio
- Department of Mental Health and Addiction, ASL Roma 5, Rome, Italy
| | - Giuseppe Migliara
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Valentina Baccolini
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Jacopo Trioni
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti, Chieti, Italy
| | - Jon E Grant
- Department of Psychiatry & Behavioral Neuroscience, University of Chicago, Pritzker School of Medicine, Chicago, IL, USA
| | - Bernardo Dell'Osso
- Department of Biomedical and Clinical Sciences Luigi Sacco and Aldo Ravelli Center for Neurotechnology and Brain Therapeutic, University of Milan, Milan, Italy
| | - Giovanni Martinotti
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti, Chieti, Italy; Department of Pharmacy, Pharmacology and Clinical Science, University of Hertfordshire, Hatfield, UK
| |
Collapse
|
4
|
Lernia DDI, Serino S, Tuena C, Cacciatore C, Polli N, Riva G. Mental health meets computational neuroscience: A predictive Bayesian account of the relationship between interoception and multisensory bodily illusions in anorexia nervosa. Int J Clin Health Psychol 2023; 23:100383. [PMID: 36937547 PMCID: PMC10017360 DOI: 10.1016/j.ijchp.2023.100383] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 02/21/2023] [Indexed: 03/09/2023] Open
Abstract
Mental health disorders pose a significant challenge to society. The Bayesian perspective on the mind offers unique insights and tools that may help address a variety of mental health conditions. Psychopathological dysfunctions are often connected to altered predictive and active inference processes, in which cognitive and physiological pathogenic beliefs shape the clinical condition and its symptoms. However, there is a lack of general empirical models that integrate cognitive beliefs, physiological experience, and symptoms in healthy and clinical populations. In this study, we examined the relationship between altered predictive mechanisms, interoception, and pathological bodily distortions in healty individuals and in individuals suffering from anorexia nervosa (AN). AN patients (N=15) completed a Virtual Reality Full-Body Illusion along with interoceptive tasks twice: at hospital admission during an acute symptomatological phase (Time 1) and after a 12-week outpatient clinical weight-restoring rehabilitative program (Time 2). Results were compared to a healthy control group. Our findings indicated that higher levels of interoceptive metacognitive awareness were associated with a greater embodiment. However, unlike in healthy participants, AN patients' interoceptive metacognition was linked to embodiment even in multisensory mismatching (asynchronous) conditions. In addition, unlike in healthy participants, higher interoceptive metacognition in AN patients was related to prior abnormal bodily distortions during the acute symptomatology phase. Prediction errors in bodily estimates predicted posterior bodily estimate distortions after the illusion, but while this relationship was only significant in the synchronous condition in healthy participants, there was no significant difference between synchronous and asynchronous conditions in AN patients. Despite the success of the rehabilitation program in restoring some dysfunctional patterns in the AN group, prediction errors and posterior estimate distortions were present at hospital discharge. Our findings suggest that individuals with AN prioritize interoceptive metacognitive processes (i.e., confidence in their own perceived sensations rather than their actual perceptions), disregarding bottom-up bodily inputs in favour of their prior altered top-down beliefs. Moreover, even if the rehabilitative program partially mitigated these alterations, the pathological condition impaired the patients' ability to coherently update their prior erroneous expectations with real-time multisensory bottom-up bodily information, possibly locking the patients in the experience of a distorted prior top-down belief. These results suggest new therapeutic perspectives and introduce the framework of regenerative virtual therapy (RVT), which aims at utilizing technology-based somatic modification techniques to restructure the maladaptive priors underlying a pathological condition.
Collapse
Affiliation(s)
- Daniele DI Lernia
- Humane Technology Lab, Università Cattolica del Sacro Cuore di Milano, Italy
| | - Silvia Serino
- Humane Technology Lab, Università Cattolica del Sacro Cuore di Milano, Italy
| | - Cosimo Tuena
- Applied Technology for Neuro-Psychology Lab, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Chiara Cacciatore
- UO di Endocrinologia e Malattie Metaboliche, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Nicoletta Polli
- UO di Endocrinologia e Malattie Metaboliche, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
| | - Giuseppe Riva
- Humane Technology Lab, Università Cattolica del Sacro Cuore di Milano, Italy
- Applied Technology for Neuro-Psychology Lab, IRCCS Istituto Auxologico Italiano, Milan, Italy
| |
Collapse
|
5
|
Laugero KD, Keim NL. A Diet Pattern Characterized by Sugar-Sweetened Beverages Is Associated with Lower Decision-Making Performance in the Iowa Gambling Task, Elevated Stress Exposure, and Altered Autonomic Nervous System Reactivity in Men and Women. Nutrients 2023; 15:3930. [PMID: 37764714 PMCID: PMC10534505 DOI: 10.3390/nu15183930] [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: 07/06/2023] [Revised: 08/22/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
The executive brain mediates and facilitates a set of cognitive functions, such as decision making, planning, self-regulation, emotional regulation, and attention. Executive dysfunction and related diseases are a rising public health concern. Evidence supports a link between nutritional factors and executive function (EF), but relatively little information exists about the relationship between diet patterns and this higher order cognitive ability. We and others have reported on the relationships between body weight regulation and affective decision making, as measured by performance in the Iowa Gambling Task (IGT). However, little is known about the relationships between performance in this decision-making task and whole diet patterns. In this study, we tested whether data-derived diet patterns based on energy-adjusted food intake data from the Block Food Frequency Questionnaire were associated with decision-making performance in the IGT. Secondarily, we examined the influence of these diet patterns on self-reported chronic stress exposure and heart rate variability, which is a marker of autonomic nervous system (ANS) activity. In prior studies, stress and ANS activity were shown to influence decision-making performance in the IGT. In this study, five distinct diet patterns were identified by cluster and factor analyses. A diet pattern best characterized by elevated sugar-sweetened beverage and added sugar consumption was associated with the lowest decision-making performance (p = 0.0049) and higher stress exposure (p = 0.0097). This same diet pattern was associated (p = 0.0374) with an IGT-affiliated decline in high-frequency HRV and an increase in low-frequency HRV, suggesting diet-induced ANS regulatory shifts in response to performing the EF task. Compared to the sugar-sweetened beverage diet pattern, diet patterns defined by more fruits/vegetables and low red meat (p = 0.0048) or higher omega-3 fatty acids and seafood (p = 0.0029) consumption were associated with lower chronic stress exposure. All outcomes were statistically adjusted for differences in BMI, age, sex, education level, and sensorimotor ability. Our findings provide new information that further supports the potential importance of whole diet patterns on cognitive disease prevention.
Collapse
Affiliation(s)
- Kevin D. Laugero
- Obesity and Metabolism Research Unit, USDA/ARS/Western Human Nutrition Research Center 2, Davis, CA 95616, USA;
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Nancy L. Keim
- Obesity and Metabolism Research Unit, USDA/ARS/Western Human Nutrition Research Center 2, Davis, CA 95616, USA;
- Department of Nutrition, University of California, Davis, CA 95616, USA
| |
Collapse
|
6
|
Herman AM. Interoception Within the Context of Impulsivity and Addiction. CURRENT ADDICTION REPORTS 2023; 10:97-106. [PMID: 37266189 PMCID: PMC10148627 DOI: 10.1007/s40429-023-00482-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2023] [Indexed: 06/03/2023]
Abstract
Purpose of Review The goal of this review is to examine the relationship between impulsivity and interoception in addiction, to summarize the current understanding of the topic, identify any gaps in knowledge, and provide directions for future research. Research Findings Interoception may be a contributing factor to impulsive behaviour and, thus, addiction. Substance abuse can negatively impact the brain's ability to process interoceptive information and impact the reward system, leading to decreased sensitivity to natural rewards and increased sensitivity to drugs. There is potential for new therapies, such as mindfulness, interoceptive training, brain stimulation, or vagal nerve stimulation to target both impulsivity and interoception in the treatment of addiction. Summary Despite a growing interest in interoception in addiction research, further research is needed to better understand the role of interoception in addiction and to develop new methods for studying how individuals with addiction process and perceive internal bodily sensations.
Collapse
Affiliation(s)
- Aleksandra M. Herman
- Laboratory of Brain Imaging, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Pasteur 3 St, Warsaw, Poland
| |
Collapse
|
7
|
Pollatos O, Mönkemöller K, Groppe K, Elsner B. Interoceptive accuracy is associated with benefits in decision making in children. Front Psychol 2023; 13:1070037. [PMID: 36743603 PMCID: PMC9893641 DOI: 10.3389/fpsyg.2022.1070037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/22/2022] [Indexed: 01/20/2023] Open
Abstract
Introduction Decision making results not only from logical analyses, but seems to be further guided by the ability to perceive somatic information (interoceptive accuracy). Relations between interoceptive accuracy and decision making have been exclusively studied in adults and with regard to complex, uncertain situations (as measured by the Iowa Gambling Task, IGT). Methods In the present study, 1454 children (6-11 years) were examined at two time points (approximately 1 year apart) using an IGT as well as a delay-of-gratification task for sweets-items and toy-items. Interoceptive accuracy was measured using a child-adapted version of the Heartbeat Perception Task. Results The present results revealed that children with higher, as compared to lower, interoceptive accuracy showed more advantageous choices in the IGT and delayed more sweets-items, but not toy-items, in a delay-of-gratification task at time point 2 but not at time point 1. However, no longitudinal relation between interoceptive accuracy and decision making 1 year later could be shown. Discussion Results indicate that interoceptive accuracy relates to decision-making abilities in situations of varying complexity already in middle childhood, and that this link might consolidate across the examined 1-year period. Furthermore, the association of interoceptive accuracy and the delay of sweets-items might have implications for the regulation of body weight at a later age.
Collapse
Affiliation(s)
- Olga Pollatos
- Clinical and Health Psychology, Institute of Education and Psychology, Ulm University, Ulm, Germany
| | - Karla Mönkemöller
- Clinical and Health Psychology, Institute of Education and Psychology, Ulm University, Ulm, Germany,*Correspondence: Karla Mönkemöller, ✉
| | - Karoline Groppe
- Evangelisches Krankenhaus Königin Elisabeth Herzberge, Berlin, Germany
| | - Birgit Elsner
- Department of Psychology, Faculty of Human Sciences, University of Potsdam, Potsdam, Germany
| |
Collapse
|
8
|
Wyckmans F, Banerjee N, Saeremans M, Otto R, Kornreich C, Vanderijst L, Gruson D, Carbone V, Bechara A, Buchanan T, Noël X. The modulation of acute stress on model-free and model-based reinforcement learning in gambling disorder. J Behav Addict 2022; 11:831-844. [PMID: 36112488 PMCID: PMC9872530 DOI: 10.1556/2006.2022.00059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/19/2022] [Accepted: 07/25/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND AND AIMS Experiencing acute stress is common in behavioral addictions such as gambling disorder. Additionally, like most substance-induced addictions, aberrant decision-making wherein a reactive habit-induced response (conceptualized as a Model-free [MF] in reinforcement learning) suppresses a flexible goal-directed response (conceptualized as a Model-based [MB]) is also common in gambling disorder. In the current study we investigated the influence of acute stress on the balance between habitual response and the goal-directed system. METHODS A sample of N = 116 problem gamblers (PG) and healthy controls (HC) performed an acute stress task - the Socially Evaluated Cold pressure task (SECPT) - or a control task. Self-reported stress and salivary cortisol were collected as measures of acute stress. Following the SECPT, participants performed the Two-Step Markov Task to account for the relative contribution of MB and MF strategies. Additionally, verbal working memory and IQ measures were collected to account for their mediating effects on the orchestration between MB/MF and the impact of stress. RESULTS Both groups had comparable baseline and stress-induced cortisol response to the SECPT. Non-stressed PG displayed lower MB learning than HC. MANOVA and regression analyses showed a deleterious effect of stress-induced cortisol response on the orchestration between MB and MF learning in HC but not in PG. These effects remained when controlling for working memory and IQ. DISCUSSION AND CONCLUSIONS We found an abnormal pattern of modulation of stress on the orchestration between MB and MF learning among PG. Several interpretations and future research directions are discussed.
Collapse
Affiliation(s)
- Florent Wyckmans
- Psychological Medicine Laboratory, Université Libre de Bruxelles, Brussels, Belgium
| | - Nilosmita Banerjee
- Psychological Medicine Laboratory, Université Libre de Bruxelles, Brussels, Belgium
| | - Mélanie Saeremans
- Psychiatric Institute, Universitary Hospital Brugmann, Brussels, Belgium
| | - Ross Otto
- Department of Psychology, McGill University, Montréal, Canada
| | - Charles Kornreich
- Psychological Medicine Laboratory, Université Libre de Bruxelles, Brussels, Belgium,Psychiatric Institute, Universitary Hospital Brugmann, Brussels, Belgium
| | - Laetitia Vanderijst
- Psychological Medicine Laboratory, Université Libre de Bruxelles, Brussels, Belgium
| | - Damien Gruson
- Department of Laboratory Medicine, Cliniques Universitaires St-Luc, Brussels, Belgium
| | - Vincenzo Carbone
- Department of Laboratory Medicine, Cliniques Universitaires St-Luc, Brussels, Belgium
| | - Antoine Bechara
- Faculty of Psychology, University of Southern California, Los Angeles, USA
| | - Tony Buchanan
- Department of Psychology, Saint Louis University, USA
| | - Xavier Noël
- Psychological Medicine Laboratory, Université Libre de Bruxelles, Brussels, Belgium,Corresponding author. E-mail:
| |
Collapse
|