Interhemispheric inhibition during mental actions of different complexity.

Several investigations suggest that actual and mental actions trigger similar neural substrates. Yet, neurophysiological evidences on the nature of interhemispheric interactions during mental movements are still meagre. Here, we asked whether the content of mental images, investigated by task comple...

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Autores principales:	Nicolas Gueugneau, Marco Bove, Laura Avanzino, Agnès Jacquin, Thierry Pozzo, Charalambos Papaxanthis
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/00e7a41fa58e433cbdfbc7205930c993
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spelling	oai:doaj.org-article:00e7a41fa58e433cbdfbc7205930c9932021-11-18T07:56:10ZInterhemispheric inhibition during mental actions of different complexity.1932-620310.1371/journal.pone.0056973https://doaj.org/article/00e7a41fa58e433cbdfbc7205930c9932013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23451125/?tool=EBIhttps://doaj.org/toc/1932-6203Several investigations suggest that actual and mental actions trigger similar neural substrates. Yet, neurophysiological evidences on the nature of interhemispheric interactions during mental movements are still meagre. Here, we asked whether the content of mental images, investigated by task complexity, is finely represented in the inhibitory interactions between the two primary motor cortices (M1s). Subjects' left M1 was stimulated by means of transcranial magnetic stimulation (TMS) while they were performing actual or mental movements of increasing complexity with their right hand and exerting a maximum isometric force with their left thumb and index. Thus, we simultaneously assessed the corticospinal excitability in the right opponent pollicis muscle (OP) and the ipsilateral silent period (iSP) in the left OP during actual and mental movements. Corticospinal excitability in right OP increased during actual and mental movements, but task complexity-dependent changes were only observed during actual movements. Interhemispheric motor inhibition in the left OP was similarly modulated by task complexity in both mental and actual movements. Precisely, the duration and the area of the iSP increased with task complexity in both movement conditions. Our findings suggest that mental and actual movements share similar inhibitory neural circuits between the two homologous primary motor cortex areas.Nicolas GueugneauMarco BoveLaura AvanzinoAgnès JacquinThierry PozzoCharalambos PapaxanthisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 2, p e56973 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicolas Gueugneau Marco Bove Laura Avanzino Agnès Jacquin Thierry Pozzo Charalambos Papaxanthis Interhemispheric inhibition during mental actions of different complexity.
description	Several investigations suggest that actual and mental actions trigger similar neural substrates. Yet, neurophysiological evidences on the nature of interhemispheric interactions during mental movements are still meagre. Here, we asked whether the content of mental images, investigated by task complexity, is finely represented in the inhibitory interactions between the two primary motor cortices (M1s). Subjects' left M1 was stimulated by means of transcranial magnetic stimulation (TMS) while they were performing actual or mental movements of increasing complexity with their right hand and exerting a maximum isometric force with their left thumb and index. Thus, we simultaneously assessed the corticospinal excitability in the right opponent pollicis muscle (OP) and the ipsilateral silent period (iSP) in the left OP during actual and mental movements. Corticospinal excitability in right OP increased during actual and mental movements, but task complexity-dependent changes were only observed during actual movements. Interhemispheric motor inhibition in the left OP was similarly modulated by task complexity in both mental and actual movements. Precisely, the duration and the area of the iSP increased with task complexity in both movement conditions. Our findings suggest that mental and actual movements share similar inhibitory neural circuits between the two homologous primary motor cortex areas.
format	article
author	Nicolas Gueugneau Marco Bove Laura Avanzino Agnès Jacquin Thierry Pozzo Charalambos Papaxanthis
author_facet	Nicolas Gueugneau Marco Bove Laura Avanzino Agnès Jacquin Thierry Pozzo Charalambos Papaxanthis
author_sort	Nicolas Gueugneau
title	Interhemispheric inhibition during mental actions of different complexity.
title_short	Interhemispheric inhibition during mental actions of different complexity.
title_full	Interhemispheric inhibition during mental actions of different complexity.
title_fullStr	Interhemispheric inhibition during mental actions of different complexity.
title_full_unstemmed	Interhemispheric inhibition during mental actions of different complexity.
title_sort	interhemispheric inhibition during mental actions of different complexity.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/00e7a41fa58e433cbdfbc7205930c993
work_keys_str_mv	AT nicolasgueugneau interhemisphericinhibitionduringmentalactionsofdifferentcomplexity AT marcobove interhemisphericinhibitionduringmentalactionsofdifferentcomplexity AT lauraavanzino interhemisphericinhibitionduringmentalactionsofdifferentcomplexity AT agnesjacquin interhemisphericinhibitionduringmentalactionsofdifferentcomplexity AT thierrypozzo interhemisphericinhibitionduringmentalactionsofdifferentcomplexity AT charalambospapaxanthis interhemisphericinhibitionduringmentalactionsofdifferentcomplexity
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Interhemispheric inhibition during mental actions of different complexity.

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