Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior

Abstract Behavioral adaptation, a central feature of voluntary movement, is known to rely on top-down cognitive control. For example, the conflict-adaptation effect on tasks such as the Stroop task leads to better performance (e.g. shorter reaction time) for incongruent trials following an already i...

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Autores principales:	M. Bosc, G. Bucchioni, B. Ribot, T. Michelet
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c2deb3df39f84cac9a9ca422b715df4c
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spelling	oai:doaj.org-article:c2deb3df39f84cac9a9ca422b715df4c2021-12-02T17:48:00ZBypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior10.1038/s41598-021-91663-92045-2322https://doaj.org/article/c2deb3df39f84cac9a9ca422b715df4c2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91663-9https://doaj.org/toc/2045-2322Abstract Behavioral adaptation, a central feature of voluntary movement, is known to rely on top-down cognitive control. For example, the conflict-adaptation effect on tasks such as the Stroop task leads to better performance (e.g. shorter reaction time) for incongruent trials following an already incongruent one. The role of higher-order cortices in such between-trial adjustments is well documented, however, a specific involvement of the primary motor cortex (M1) has seldom been questioned. Here we studied changes in corticospinal excitability associated with the conflict-adaptation process. For this, we used single-pulse transcranial-magnetic stimulation (TMS) applied between two consecutive trials in an interference flanker task, while measuring motor-evoked potentials (MEPs) after agonistic and antagonistic voluntary movements. In agonist movement, MEP amplitude was modulated by recent movement history with an increase favoring movement repetition, but no significant change in MEP size was observed whether a previous trial was incongruent or congruent. Critically, for an antagonist movement, the relative size of MEPs following incongruent trials correlated positively with the strength of behavioral adaptation measured as the degree of RT shortening across subjects. This post-conflict increase in corticospinal excitability related to antagonist muscle recruitment could compensate for a potential deleterious bias due to recent movement history that favors the last executed action. Namely, it prepares the motor system to rapidly adapt to a changing and unpredictable context by equalizing the preparation for all possible motor responses.M. BoscG. BucchioniB. RibotT. MicheletNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q M. Bosc G. Bucchioni B. Ribot T. Michelet Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
description	Abstract Behavioral adaptation, a central feature of voluntary movement, is known to rely on top-down cognitive control. For example, the conflict-adaptation effect on tasks such as the Stroop task leads to better performance (e.g. shorter reaction time) for incongruent trials following an already incongruent one. The role of higher-order cortices in such between-trial adjustments is well documented, however, a specific involvement of the primary motor cortex (M1) has seldom been questioned. Here we studied changes in corticospinal excitability associated with the conflict-adaptation process. For this, we used single-pulse transcranial-magnetic stimulation (TMS) applied between two consecutive trials in an interference flanker task, while measuring motor-evoked potentials (MEPs) after agonistic and antagonistic voluntary movements. In agonist movement, MEP amplitude was modulated by recent movement history with an increase favoring movement repetition, but no significant change in MEP size was observed whether a previous trial was incongruent or congruent. Critically, for an antagonist movement, the relative size of MEPs following incongruent trials correlated positively with the strength of behavioral adaptation measured as the degree of RT shortening across subjects. This post-conflict increase in corticospinal excitability related to antagonist muscle recruitment could compensate for a potential deleterious bias due to recent movement history that favors the last executed action. Namely, it prepares the motor system to rapidly adapt to a changing and unpredictable context by equalizing the preparation for all possible motor responses.
format	article
author	M. Bosc G. Bucchioni B. Ribot T. Michelet
author_facet	M. Bosc G. Bucchioni B. Ribot T. Michelet
author_sort	M. Bosc
title	Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
title_short	Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
title_full	Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
title_fullStr	Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
title_full_unstemmed	Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
title_sort	bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c2deb3df39f84cac9a9ca422b715df4c
work_keys_str_mv	AT mbosc bypassingusedependentplasticityintheprimarymotorcortextopreserveadaptivebehavior AT gbucchioni bypassingusedependentplasticityintheprimarymotorcortextopreserveadaptivebehavior AT bribot bypassingusedependentplasticityintheprimarymotorcortextopreserveadaptivebehavior AT tmichelet bypassingusedependentplasticityintheprimarymotorcortextopreserveadaptivebehavior
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Bypassing use-dependent plasticity in the primary motor cortex to preserve adaptive behavior

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