
Ludovic Marin
- EuroMov - Digital Health in Motion (Euromov DHM)
Présentation
Education and qualifications
1995-1997 Ph.D. Thesis. University of the Mediterranean, Marseille, France
2009 Habilitation. University Montpellier I, Montpellier, France.
2022 Full Professor. University Montpellier, Montpellier, France.
General research Interests
My main research interests lie in the perception and action field, investigating how controlled movements may be coupled with sensory information. I am particularly interested in skilled behavior in infants, adults and elders, whether this be in more traditional motor control tasks or in sport settings. In addition, I have been involved with investigating different aspects of the dynamical/ecological approach to perception and action and to emotion and action. This includes how infants, adults and elders coordinate together (called interpersonal coordination) and control their posture, orientation and goal-directed movements as well as how visual, proprioceptive and vestibular information are used to control movement and how information and movement are coupled.
Current research
As full professor in the “EuroMov Digital Health in Motion” laboratory at the University of Montpellier (France), my research is focused on inter-personal coordination in interlimb and postural situations. The goal of my research is to determine the sources of interpersonal coordination. Although different fields have investigated social interaction, little work has been performed to integrate their approaches in an interdisciplinary study. Consequently, our work aims at using an interdisciplinary paradigm to examine the multilevel processes that characterize motor coordination and its consequences on social interactions. In order to conduct our investigations, we collaborate with researchers from different fields (psychiatry and robotic) to examine motor coordination in healthy individuals and its impairments in agents with social disorders: patients (social phobia, autistic and schizophrenic patients) and robots (considered as having a deficit in human-robot coordination). We have extended this major research topic by investigated speech-gesture coordination during a social interaction. We have created a new methodology to analyze how co-verbal gestures should be performed to obtain a smooth and natural interaction between two individuals. This method allows us to study what are the impaired gestures in patients with mental disorders in order to enhance social competences by the use of artificial agents. In addition, we have completed this methodology by developing an analysis to reveal the motor signature of individuals and groups using the similarity comparisons. For instance, we have revealed that patients with schizophrenia possess a specific motor signature different from patients suffering of an autistic spectrum disorder. Altogether my work is the first stage in a series of studies investigating the intention-action coupling and the “perception-action” relationship.
Previous research
Post doctoral fellow and lab supervisor, from 1998 to 2001 in the “Infant Motor Development” Laboratory, Department of psychology, New York University, New York: I was interested in understanding how locomotion, postural control and motor perception was set up in infant toddlers (from 8 to 24 months old). In particular, I was focused on how these infants were able to perceive a risky environment (gaps in the floor, steep slopes, changes in surface friction and rigidity) while walking or crawling and if so, how they adapted their locomotion to cope with these various environmental constraints.
Scientific researcher (temporary contract) from 1997 to 1998 in the “Sport and Motor Performance” Laboratory at the University of Joseph Fourier, Grenoble, France: My work was focused on spatial orientation and postural control. Studies concerning spatial orientation were conducted at the CRSSA (Army Research Center) where we investigated the role of the different sensory information (vestibular and somato sensory systems) used to control spatial orientation. The postural control studies were based on how Down’s syndrome teenagers were able to control their balance and what sensory information they mainly used to control their posture.
Ph. D. student (competitive grant) from 1994 to 1997 in the “Movement and Perception” laboratory at the University of the Mediterranean, Marseille, France: My thesis research explored how humans coordinate their limb movements in order to produce relevant postures during a voluntary head movement task. I used concepts of the dynamical approach to explore this coordination, assuming that the large number of available degrees of freedom could be reduced to a few macroscopic descriptors able to summarize the coordination between components. I found that the phase relation between movements of the hip and ankle could be used to describe the dynamical coordination patterns of postural sway. Two stable patterns of coordination were found to emerge from the hip-ankle relations: an in-phase pattern (hip and ankle moving in the same direction) and an anti-phase pattern (these joints moving in the opposite direction). These results confirmed the relevance of using relative phase to study postural control in bipedal stance in humans.
Domaines de recherche
Compétences
Publications
Publications
Neurosciences comportementales : contrôle du mouvement et apprentissage moteurEditions Ellipses, 2019, ISBN13 : 9782340012264
Ouvrages
hal-03147932
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Neurosciences comportementalesEditions Ellipses, 2019, Tout-en-un Licence STAPS, Youcef Alenbagi, ISBN13 : 9782340029606
Ouvrages
hal-03147936
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Neurosciences : contrôle et apprentissage moteurEllipses, 299 p., 2005, L'Essentiel en sciences du sport, 2-7298-2380-8
Ouvrages
hal-03147934
v1
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