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An acute session of motor imagery training induces use-dependent plasticity
Motor imagery, defined as the mental representation of an action without movement-related sensory inputs, is a well-known intervention to improve motor performance. In the current study, we tested whether use-dependent plasticity, a mechanism underlying motor learning, could be induced by an acute s...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6934610/ https://www.ncbi.nlm.nih.gov/pubmed/31882851 http://dx.doi.org/10.1038/s41598-019-56628-z |
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author | Ruffino, Célia Gaveau, Jérémie Papaxanthis, Charalambos Lebon, Florent |
author_facet | Ruffino, Célia Gaveau, Jérémie Papaxanthis, Charalambos Lebon, Florent |
author_sort | Ruffino, Célia |
collection | PubMed |
description | Motor imagery, defined as the mental representation of an action without movement-related sensory inputs, is a well-known intervention to improve motor performance. In the current study, we tested whether use-dependent plasticity, a mechanism underlying motor learning, could be induced by an acute session of motor imagery. By means of transcranial magnetic stimulation (TMS) over the left primary motor cortex, we evoked isolated thumb movements in the right hand and assessed corticospinal excitability in the flexor and extensor pollicis brevis muscles. We measured the mean TMS-induced movement direction before and after an acute session of motor imagery practice. In a first experiment, participants of the imagery group were instructed to repeatedly imagine their thumb moving in a direction deviated by 90° from the pre-test movement. This group, but not the control group, deviated the post-training TMS-induced movements toward the training target direction (+44° ± 62° and −1° ± 23°, respectively). Interestingly, the deviation magnitude was driven by the corticospinal excitability increase in the agonist muscle. In a second experiment, we found that post-training TMS-induced movements were proportionally deviated toward the trained direction and returned to baseline 30 minutes after the motor imagery training. These findings suggest that motor imagery induces use-dependent plasticity and, this neural process is accompanied by corticospinal excitability increase in the agonist muscle. |
format | Online Article Text |
id | pubmed-6934610 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-69346102019-12-30 An acute session of motor imagery training induces use-dependent plasticity Ruffino, Célia Gaveau, Jérémie Papaxanthis, Charalambos Lebon, Florent Sci Rep Article Motor imagery, defined as the mental representation of an action without movement-related sensory inputs, is a well-known intervention to improve motor performance. In the current study, we tested whether use-dependent plasticity, a mechanism underlying motor learning, could be induced by an acute session of motor imagery. By means of transcranial magnetic stimulation (TMS) over the left primary motor cortex, we evoked isolated thumb movements in the right hand and assessed corticospinal excitability in the flexor and extensor pollicis brevis muscles. We measured the mean TMS-induced movement direction before and after an acute session of motor imagery practice. In a first experiment, participants of the imagery group were instructed to repeatedly imagine their thumb moving in a direction deviated by 90° from the pre-test movement. This group, but not the control group, deviated the post-training TMS-induced movements toward the training target direction (+44° ± 62° and −1° ± 23°, respectively). Interestingly, the deviation magnitude was driven by the corticospinal excitability increase in the agonist muscle. In a second experiment, we found that post-training TMS-induced movements were proportionally deviated toward the trained direction and returned to baseline 30 minutes after the motor imagery training. These findings suggest that motor imagery induces use-dependent plasticity and, this neural process is accompanied by corticospinal excitability increase in the agonist muscle. Nature Publishing Group UK 2019-12-27 /pmc/articles/PMC6934610/ /pubmed/31882851 http://dx.doi.org/10.1038/s41598-019-56628-z Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Ruffino, Célia Gaveau, Jérémie Papaxanthis, Charalambos Lebon, Florent An acute session of motor imagery training induces use-dependent plasticity |
title | An acute session of motor imagery training induces use-dependent plasticity |
title_full | An acute session of motor imagery training induces use-dependent plasticity |
title_fullStr | An acute session of motor imagery training induces use-dependent plasticity |
title_full_unstemmed | An acute session of motor imagery training induces use-dependent plasticity |
title_short | An acute session of motor imagery training induces use-dependent plasticity |
title_sort | acute session of motor imagery training induces use-dependent plasticity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6934610/ https://www.ncbi.nlm.nih.gov/pubmed/31882851 http://dx.doi.org/10.1038/s41598-019-56628-z |
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