Stephane Perrey

Stephane Perrey
Université de Montpellier | UM1 · Faculté des Sciences du Sport (STAPS)

PhD

About

360
Publications
128,460
Reads
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6,865
Citations
Citations since 2016
140 Research Items
3785 Citations
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20162017201820192020202120220100200300400500600
20162017201820192020202120220100200300400500600
Introduction
My current researches are in the centre of issues, which have for objectives to identify, quantify and explain mechanisms responsible for changes of the motor function in humans. Especially, functional investigation of the brain during various motor tasks involving fatigue is realized by using electrophysiological and near-infrared spectroscopy signals.
Additional affiliations
September 2012 - January 2019
Université de Montpellier
Position
  • Deputy director of the Laboratory
September 2012 - June 2015
Université de Montpellier
Position
  • Managing Director
September 2010 - March 2017
Université de Montpellier
Position
  • Managing Director

Publications

Publications (360)
Article
Full-text available
Recently, interest has been growing to understand the underlying dynamic directional relationship between simultaneously activated regions of the brain during motor task performance. Such directionality analysis (or effective connectivity analysis), based on non-invasive electrophysiological (electroencephalography-EEG) and hemodynamic (functional...
Article
Full-text available
Background: Since the introduction (in 2006) of commercially available portable wireless muscle oximeters, the use of muscle near-infrared spectroscopy (NIRS) technology is gaining in popularity as an application to observe changes in muscle metabolism and muscle oxygenation during and after exercise or training interventions in both laboratory an...
Chapter
Understanding the interactions between brain activity and behavior comprehensively in achieving optimal exercise performance in sports is still lacking. The existent research in this area has been limited by the constraints of sports environments and the robustness of the most suitable non-invasive functional neuroimaging methods (electroencephalog...
Article
The movement occurring when a muscle exerts tension while lengthening is known as eccentric muscle action. Literature contains limited evidence on how our brain controls eccentric movement. However, how the cortical regions in the motor network are activated during eccentric muscle actions may be critical for understanding the underlying control me...
Article
Full-text available
The emergence of the first Fitness-Fatigue impulse responses models (FFMs) have allowed the sport science community to investigate relationships between the effects of training and performance. In the models, athletic performance is described by first order transfer functions which represent Fitness and Fatigue antagonistic responses to training. O...
Article
Full-text available
NIRS method presents a unique opportunity to measure brain functioning in a continuous, real-time, and nonintrusive manner for multiple neuroergonomics scenario, as encountered in sports. Sport is currently a suitable but not underlined and undefined applied domain for neuroergonomics. Current wearable NIRS monitors growing in availability and popu...
Preprint
Full-text available
Eccentric, compared to concentric muscle contraction, is thought to be attributed to different strategies of neuro-motor processing and a higher level of mental demand. This study aimed to evaluate the mental demand and related-cortical activation patterns to eccentric and concentric cycling at matched perceived effort and torque. Nineteen healthy...
Article
Full-text available
Background: Transcranial direct current stimulation (tDCS) has emerged as a promising and feasible method to improve motor performance in healthy and clinical populations. However, the potential of tDCS to enhance sport-specific motor performance in athletes remains elusive. Objective: We aimed at analyzing the acute effects of a single anodal t...
Article
Full-text available
The object of this study is to put forward uncertainty modeling associated with missing time series data imputation in a predictive context. We propose three imputation methods associated with uncertainty modeling. These methods are evaluated on a COVID-19 dataset out of which some values have been randomly removed. The dataset contains the numbers...
Article
Full-text available
Purpose: Repeated-sprint training in hypoxia (RSH) leads to great improvements in anaerobic performance. However, there is no consensus about the optimal level of hypoxia that should be used during training to maximize subsequent performances. This study aimed to establish whether such an optimal altitude can be determined and whether pulse oxygen...
Technical Report
Full-text available
Personne, malheureusement, n'échappe à la fatigue. En bonne santé ou touchés par une pathologie chronique, simple quidam ou athlète de haut niveau, après une journée de travail intense, nous sommes tous confrontés à cette sensation de ne plus avoir les ressources suffisantes pour continuer à travailler, réfléchir, faire du sport…
Preprint
Full-text available
In recent years, neuroscientists have been interested to the development of brain-computer interface (BCI) devices. Patients with motor disorders may benefit from BCIs as a means of communication and for the restoration of motor functions. Electroencephalography (EEG) is one of most used for evaluating the neuronal activity. In many computer vision...
Article
Full-text available
Contribution to the field We hosted a special research topic issue for Frontiers in Neuroergonomics that focused on brain mechanisms underpinning physical movement and exercise. In total, 8 papers were accepted totalling 31 authors that covered three main domains: 1) Methods to elucidate fine motor control, 2) Exercise-related brain adaptations, an...
Article
Full-text available
This study aims to predict individual Acceleration-Velocity profiles (A-V) from Global Navigation Satellite System (GNSS) measurements in real-world situations. Data were collected from professional players in the Superleague division during a 1.5 season period (2019–2021). A baseline modeling performance was provided by time-series forecasting met...
Poster
Full-text available
Synopsis: Unexpected external perturbation influences team performance through its coordination ability. Given the existence of brain rhythms synchronization in two individuals cooperating together, this study aimed at testing the effect of a perturbation on the neurophysiological coordination. Forty-two participants (21 dyads) divided in two grou...
Conference Paper
Full-text available
In recent years, neuroscientists have been interested to the development of brain-computer interface (BCI) devices. Patients with motor disorders may benefit from BCIs as a means of communication and for the restoration of motor functions. Electroencephalography (EEG) is one of most used for evaluating the neuronal activity. In many computer vision...
Poster
Full-text available
In post-stroke rehabilitation unit, upper limb (UL) function recovery is a subject of major interest to facilitate patient’s autonomy in everyday life. This recovery is deeply linked to plastic brain reorganisation. A better understanding of the brain-movement characteristics could help for guiding therapeutic interventions. Two neuro-imagery metho...
Preprint
Full-text available
Background: Transcranial direct current stimulation (tDCS) has emerged as a promising and feasible method to improve motor performance in healthy and clinical populations. However, the potential of tDCS to enhance sport-specific motor performance in athletes remains elusive. Objective: We aimed at analyzing the acute effects of a single anodal tDC...
Technical Report
Full-text available
Notre espèce est acclimatée à un monde placé sous le joug d'une gravité constante-en l'occurrence, une force d'accélération omniprésente née de l'attraction terrestre (l'unité de pesanteur terrestre, notée g, valant 9,81 m/s 2). Il existe toutefois des circonstances où notre corps est soumis à plus fort que la gravité terrestre classique… C'est là...
Preprint
Full-text available
This study aims to predict individual Acceleration-Velocity profiles (A-V) from Global Navigation Satellite System (GNSS) measurements in real-world situations. Data were collected from professional players in the Superleague division during a 1.5 season period (2019-2021). A baseline modeling performance was provided by time-series forecasting met...
Article
Full-text available
Appropriate training burden monitoring is still a challenge for the support staff, athletes, and coaches. Extensive research has been done in recent years that proposes several external and internal indicators. Among all measurements, the importance of cognitive factors has been indicated but has never been really considered in the training monitor...
Article
Full-text available
Interest for neuromodulation, and transcranial random noise stimulation (tRNS) in particular, is growing. It concerns patients rehabilitation, but also healthy people who want or need to improve their cognitive and learning abilities. However, there is no consensus yet regarding the efficacy of tRNS on learning and performing a complex task. In par...
Article
Full-text available
Executive functions are important for successful accomplishment of walking tasks, particularly during a dual task. Over the past few years, several studies investigated prefrontal cortex activity under different walking conditions in older adults with functional near infrared spectroscopy (fNIRS). However, little is known about changes in dorsolate...
Article
Full-text available
This study aims to provide a transferable methodology in the context of sport performance modelling, with a special focus to the generalisation of models. Data were collected from seven elite Short track speed skaters over a three months training period. In order to account for training load accumulation over sessions, cumulative responses to train...
Article
Numerous studies have shown that working memory modulates every frequency band’s power in the human brain. Yet, the question of how the highly distributed working memory adapts to external demands remains unresolved. Here, we explored frequency band modulations underlying working memory load, taking executive control under account. We hypothesized...
Article
Full-text available
Introduction Parkinson’s disease (PD) leads to a progressive loss of locomotor automaticity. Consequently, PD patients rely more on executive resources for the control of gait, resulting in increased prefrontal activity while walking. Exercise-based training programs may improve automaticity of walking and reduce prefrontal activity in this populat...
Presentation
Full-text available
Outline of my talk is focused on results based on the brain responses in the context of sport performances. Two sport categories are distinguished, namely, closed skill sports (CSS) and open skills sports (OSS); OSS (e.g., basketball, table tennis) require players to react in an unpredictable and changing externally paced environment while CSS are...
Article
Full-text available
Background After a stroke, 80% of the chronic patients have difficulties to use their paretic upper limb (UL) in activities of daily life (ADL) even after rehabilitation. Virtual reality therapy (VRT) and anodal transcranial direct current stimulation (tDCS) are two innovative methods that have shown independently to positively impact functional re...
Article
Full-text available
Transcranial direct current stimulation (tDCS) has been shown to evoke hemodynamics response; however, the mechanisms have not been investigated systematically using systems biology approaches. Our study presents a grey-box linear model that was developed from a physiologically detailed multi-compartmental neurovascular unit model consisting of the...
Article
BACKGROUND: Aerobatic pilots must withstand high and sudden acceleration forces (Gz) up to 10 Gz. The physiological consequences of such a succession of high and abrupt positive and negative Gz on the human body over time remain mostly unknown. This case report emphasizes changes in physiological factors such as cerebral oxygenation and heart rate...
Conference Paper
Full-text available
In this study, we examined how changes in task difficulty was modulating functional brain activation and effective connectivity in some important brain areas involved in working memory (i.e., the medial and dorsolateral prefrontal cortex, mPFC and dlPFC).
Article
Full-text available
Despite a growing number of functional MRI studies reporting exercise-induced changes during cognitive processing, a systematic determination of the underlying neurobiological pathways is currently lacking. To this end, our neuroimaging meta-analysis included 20 studies and investigated the influence of physical exercise on cognition-related functi...
Book
Full-text available
The improvement of exercise performance in sports not only involves the enhancement of physical strength, but also includes the development of psychological and cognitive functions. There is an increasing body of evidence to show that physical exercise is a powerful way to improve a number of aspects of cognition and brain function at the systemic...
Preprint
Full-text available
Background After a stroke, 80% of the chronic patients have difficulties to use their paretic upper limb (UL) in activities of daily life (ADL) even after rehabilitation. Virtual reality therapy (VRT) and anodal transcranial direct current stimulation (tDCS) are two innovative methods that have shown independently to positively impact functional re...
Cover Page
Full-text available
Special Issue Information The main goal of systems neuroscience is to understand how the brain controls behavior. With the advent of neuroimaging technologies and transcranial stimulation protocols, it has become possible to study the functional brain correlates of behavior and underlying cognitive and sensorimotor functions’ performance. Acute an...
Article
Full-text available
Although endurance running (ER) seems to be a simple repetitive exercise, good ER performance also requires and relies on multiple cognitive and motor control processes. Most of previous neuroimaging studies on ER were conducted by using a single MRI modality, yet no multimodal study to our knowledge has been performed in this regard. In this study...
Preprint
Full-text available
This study aims to provide a transferable methodology in the context of sport performance modelling, with a special focus to the generalisation of models. Data were collected from seven elite Short track speed skaters over a three months training period. In order to account for training load accumulation over sessions, cumulative responses to train...
Article
Full-text available
Editorial manuscript of the Special Issue "Studying Brain Activity in Sports Performance"
Article
Full-text available
Background: Walking becomes more and more degraded as Parkinson's Disease (PD) progresses. Previous research examined factors contributing to this deterioration. Among them, changes in brain cortical activity during walking have been less studied in this clinical population. Objectives: This study aimed to: (1) investigate changes in dorsolateral p...
Article
Full-text available
A single session of priming cathodal transcranial direct current stimulation (tDCS) prior to anodal tDCS (c-a-tDCS) allows cumulative effects on motor learning and retention. However, the impact of multiple sessions of c-a-tDCS priming on learning and retention remains unclear. Here, we tested whether multiple sessions of c-a-tDCS (over 3 consecuti...
Article
Full-text available
Objective: The current study aimed at comparing the effects of Tai Chi (a motor-cognitive exercise) with walking (an exercise without cognitive demands) on cognitive performance, brain structure, and brain function in the elderly. Methods: This cross-sectional study included 42 healthy elderly women within two groups: Tai Chi (n = 20; mean age =...
Article
Full-text available
Background The beneficial effects of acute exercise on executive function have been well-documented, but the influence of cardiorespiratory fitness on this effect requires further investigations, especially using imaging technique. This study aimed to examine the effects of cardiorespiratory fitness on acute exercise-induced changes on behavioral p...
Preprint
Full-text available
Transcranial direct current stimulation (tDCS) has been shown to evoke hemodynamics response; however, the mechanisms have not been investigated systematically using systems biology approaches. We postulate that such a mechanistic understanding of the hemodynamics response, called cerebrovascular reactivity (CVR) to tDCS, can facilitate adequate de...
Preprint
Full-text available
Transcranial direct current stimulation (tDCS) has been shown to evoke hemodynamics response; however, the mechanisms have not been investigated systematically using systems biology approaches. We postulate that such a mechanistic understanding of the hemodynamics response, called cerebrovascular reactivity (CVR) to tDCS, can facilitate adequate de...
Preprint
Full-text available
The mechanism of action for the cerebral vasculature hemodynamic response to the electric field effects during transcranial direct current stimulation (tDCS) has been less explored. We postulate that such a mechanistic understanding of the cerebrovascular reactivity (CVR) to tDCS can facilitate adequate tDCS dosing to facilitate cognitive rehabilit...
Conference Paper
Full-text available
The objective of this article is to compare three approaches of missing data management in a classification context with sequential labels at variable time steps. The data concern the longitudinal monitoring of twenty-seven professional soccer players in terms of training schedules and perceived internal load. One approach without imputation uses t...
Article
Full-text available
The large amount of features recorded from GPS and inertial sensors (external load) and well-being questionnaires (internal load) can be used together in a multi-dimensional non-linear machine learning based model for a better prediction of non-contact injuries. In this study we put forward the main hypothesis that the use of such models would be a...
Preprint
Full-text available
Objective The current study aimed at determining effects of Tai Chi as an example of a combined motor-cognitive exercise relative to regular walking as an example of an exercise without cognitive demands on cognitive functioning and the functional and structural integrity of the brain in the elderly. Methods Healthy elderly women with at least 6 y...
Article
Full-text available
This study assessed the Stryd running power meter validity at sub-maximal speeds (8 to 19 km/h). Six recreational runners performed an incremental indoor running test. Power output (PO), ground contact time (GCT) and leg spring stiffness (LSS) were compared to reference measures recorded by portable metabolic analyser, force platforms and motion ca...
Preprint
Full-text available
Despite a growing number of functional MRI studies reporting exercise-induced changes during cognitive processing, a systematic determination of the underlying neurobiological pathways is currently lacking. To this end, our neuroimaging meta-analysis included 20 studies and investigated the influence of exercise on cognition-related functional brai...
Conference Paper
Full-text available
PURPOSE: Perceptions of effort (PE) and muscle pain (MP) influence performance and engagement in regular physical exercise. Literature-based standardized instructions describe PE as resulting from multiple sensory cues including “aches”. This description of PE creates a possible confound when PE and MP are being considered separately. This project...