Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.

<h4>Background</h4>Visually determining what is reachable in peripersonal space requires information about the egocentric location of objects but also information about the possibilities of action with the body, which are context dependent. The aim of the present study was to test the ro...

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Autores principales:	Yann Coello, Angela Bartolo, Bastien Amiri, Hervé Devanne, Elise Houdayer, Philippe Derambure
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2008
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a9238afbb1794fe7be424fe7e8c57211
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id	oai:doaj.org-article:a9238afbb1794fe7be424fe7e8c57211
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spelling	oai:doaj.org-article:a9238afbb1794fe7be424fe7e8c572112021-11-25T06:11:16ZPerceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.1932-620310.1371/journal.pone.0002862https://doaj.org/article/a9238afbb1794fe7be424fe7e8c572112008-08-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18682848/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Visually determining what is reachable in peripersonal space requires information about the egocentric location of objects but also information about the possibilities of action with the body, which are context dependent. The aim of the present study was to test the role of motor representations in the visual perception of peripersonal space.<h4>Methodology</h4>Seven healthy participants underwent a TMS study while performing a right-left decision (control) task or perceptually judging whether a visual target was reachable or not with their right hand. An actual grasping movement task was also included. Single pulse TMS was delivered 80% of the trials on the left motor and premotor cortex and on a control site (the temporo-occipital area), at 90% of the resting motor threshold and at different SOA conditions (50ms, 100ms, 200ms or 300ms).<h4>Principal findings</h4>Results showed a facilitation effect of the TMS on reaction times in all tasks, whatever the site stimulated and until 200ms after stimulus presentation. However, the facilitation effect was on average 34ms lower when stimulating the motor cortex in the perceptual judgement task, especially for stimuli located at the boundary of peripersonal space.<h4>Conclusion</h4>This study provides the first evidence that brain motor area participate in the visual determination of what is reachable. We discuss how motor representations may feed the perceptual system with information about possible interactions with nearby objects and thus may contribute to the perception of the boundary of peripersonal space.Yann CoelloAngela BartoloBastien AmiriHervé DevanneElise HoudayerPhilippe DeramburePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 3, Iss 8, p e2862 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yann Coello Angela Bartolo Bastien Amiri Hervé Devanne Elise Houdayer Philippe Derambure Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
description	<h4>Background</h4>Visually determining what is reachable in peripersonal space requires information about the egocentric location of objects but also information about the possibilities of action with the body, which are context dependent. The aim of the present study was to test the role of motor representations in the visual perception of peripersonal space.<h4>Methodology</h4>Seven healthy participants underwent a TMS study while performing a right-left decision (control) task or perceptually judging whether a visual target was reachable or not with their right hand. An actual grasping movement task was also included. Single pulse TMS was delivered 80% of the trials on the left motor and premotor cortex and on a control site (the temporo-occipital area), at 90% of the resting motor threshold and at different SOA conditions (50ms, 100ms, 200ms or 300ms).<h4>Principal findings</h4>Results showed a facilitation effect of the TMS on reaction times in all tasks, whatever the site stimulated and until 200ms after stimulus presentation. However, the facilitation effect was on average 34ms lower when stimulating the motor cortex in the perceptual judgement task, especially for stimuli located at the boundary of peripersonal space.<h4>Conclusion</h4>This study provides the first evidence that brain motor area participate in the visual determination of what is reachable. We discuss how motor representations may feed the perceptual system with information about possible interactions with nearby objects and thus may contribute to the perception of the boundary of peripersonal space.
format	article
author	Yann Coello Angela Bartolo Bastien Amiri Hervé Devanne Elise Houdayer Philippe Derambure
author_facet	Yann Coello Angela Bartolo Bastien Amiri Hervé Devanne Elise Houdayer Philippe Derambure
author_sort	Yann Coello
title	Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
title_short	Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
title_full	Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
title_fullStr	Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
title_full_unstemmed	Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
title_sort	perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.
publisher	Public Library of Science (PLoS)
publishDate	2008
url	https://doaj.org/article/a9238afbb1794fe7be424fe7e8c57211
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Perceiving what is reachable depends on motor representations: evidence from a transcranial magnetic stimulation study.

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