Must the hand be seen or only imagined for visuoproprioceptive integration? Evidence form ERP
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1
Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7191, CNRS-ULP, France
Behavioral studies have employed various types of experiment to investigate the links between vision and proprioception. The present study sought electrophysiological evidence of the contribution of visual inputs to visuoproprioceptive integration. Using the brain event-related potential called the lateralized readiness potential, which reflects cortical activity in the primary motor cortex, we showed that viewing one hand’s movement in a sagittal mirror – giving the impression that the opposite hand is moving – generated activity in the motor cortex of the seen hand (i.e., of the nonmoving hand hidden behind the mirror). Furthermore, this dominance of visual information over proprioception was greatly reduced when the task was executed in the dark with hand position represented by small lights fixed on the moving hand, yielding its representation by means of a structure-from-motion process, with no motor activity being recorded in the cortical area of the inactive hand. These results give new insights into how the brain integrates visual and proprioceptive information during the execution of voluntary movement.
Conference:
10th International Conference on Cognitive Neuroscience, Bodrum, Türkiye, 1 Sep - 5 Sep, 2008.
Presentation Type:
Poster Presentation
Topic:
Abstracts
Citation:
Touzalin-Chretien
P and
Dufour
A
(2008). Must the hand be seen or only imagined for visuoproprioceptive integration? Evidence form ERP.
Conference Abstract:
10th International Conference on Cognitive Neuroscience.
doi: 10.3389/conf.neuro.09.2009.01.283
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Received:
09 Dec 2008;
Published Online:
09 Dec 2008.
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Correspondence:
Pascale Touzalin-Chretien, Laboratoire d’Imagerie et de Neurosciences Cognitives, UMR 7191, CNRS-ULP, Strasbourg, France, pascale.touzalin@linc.u-strasbg.fr