TURNING THE BODY INSIDE-OUT : LOCALIZATION OF FORCE FEEDBACK BEYOND BODILY BOUNDARIES INDUCED BY MULTISENSORY VISUO-TACTILE CONFLICT

Isadora Olive, Julien Barra, Alain Berthoz
Poster
Time: 2009-06-30  09:00 AM – 10:30 AM
Last modified: 2009-06-04

Abstract


Force feedback is processed by an interaction of proprioceptors located in the muscles, and so forth represents the most inner perception of the human body. In the present work we demonstrate for the first time ever that such proprioceptive perception, internal as it is, may be allocated outside and beyond bodily boundaries. Multisensory integrative processes related to direct visual influence on early primary somatosensory cortex, or indirect, motor cortex relayed, visual influence on early primary somatosensory cortex are discussed as putative neuronal substrate for the observed phenomenon. The role of parietal associative areas such as the intraparietal sulcus is also debated. Such study sheds light upon differential mechanisms that may contribute to the construction of human body representation.

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