Titre :

Congruent action context releases Mu rhythm desynchronization when visual objects activate competing action representations

Auteur(s) :

Wamain, Yannick [Auteur]
Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193
Godard, Marc [Auteur]
Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193
Puffet, Anne-Sophie [Auteur]
Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 [SCALab]
Delepoulle, Samuel [Auteur]
Laboratoire d'Informatique Signal et Image de la Côte d'Opale [LISIC]
KALENINE, SOLENE [Auteur]
Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Titre de la revue :

Cortex

Date de publication :

2023-02-23

ISSN :

0010-9452

Discipline(s) HAL :

Sciences cognitives

Résumé en anglais : [en]

Recent findings demonstrated that object perception is affected by the competition between action representations. Simultaneous activation of distinct structural (“grasp-to-move”) and functional (“grasp-to-use”) action ...
Lire la suite >Recent findings demonstrated that object perception is affected by the competition between action representations. Simultaneous activation of distinct structural (“grasp-to-move”) and functional (“grasp-to-use”) action representations slows down perceptual judgements on objects. At the brain level, competition reduces motor resonance effects during manipulable object perception, reflected by an extinction of μ rhythm desynchronization. However, how this competition is solved in the absence of object-directed action remains unclear. The present study investigates the role of context in the resolution of the competition between conflicting action representations during mere object perception. To this aim, thirty-eight volunteers were instructed to perform a reachability judgment task on 3D objects presented at different distances in a virtual environment. Objects were conflictual objects associated with distinct structural and functional action representations. Verbs were used to provide a neutral or congruent action context prior or after object presentation. Neurophysiological correlates of the competition between action representation were recorded using EEG. The main result showed a release of μ rhythm desynchronization when reachable conflictual objects were presented with a congruent action context. Context influenced μ rhythm desynchronization when the action context was provided prior or after object presentation in a time-window compatible with object-context integration (around 1000 ms after the presentation of the first stimulus). These findings revealed that action context biases competition between co-activated action representations during mere object perception and demonstrated that μ rhythm desynchronization may be an index of activation but also competition between action representations in perception.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

La perception change avec l'évolution des représentations d'actions

Établissement(s) :

Université de Lille
CNRS
CHU Lille

Collections :

• Sciences Cognitives et Sciences Affectives (SCALab) - UMR 9193

Équipe(s) de recherche :

Équipe Action, Vision et Apprentissage (AVA)

Date de dépôt :

2023-02-22T10:24:49Z
2023-03-02T17:34:32Z