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Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123
When a visually guided reaching movement is unexpectedly perturbed, it is implicitly corrected in two ways: immediately after the perturbation by feedback control (online correction) and in the next movement by adjusting feedforward motor commands (offline correction or motor adaptation). Although r...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Society for Neuroscience
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4891765/ https://www.ncbi.nlm.nih.gov/pubmed/27275006 http://dx.doi.org/10.1523/ENEURO.0032-16.2016 |
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author | Hayashi, Takuji Yokoi, Atsushi Hirashima, Masaya Nozaki, Daichi |
author_facet | Hayashi, Takuji Yokoi, Atsushi Hirashima, Masaya Nozaki, Daichi |
author_sort | Hayashi, Takuji |
collection | PubMed |
description | When a visually guided reaching movement is unexpectedly perturbed, it is implicitly corrected in two ways: immediately after the perturbation by feedback control (online correction) and in the next movement by adjusting feedforward motor commands (offline correction or motor adaptation). Although recent studies have revealed a close relationship between feedback and feedforward controls, the nature of this relationship is not yet fully understood. Here, we show that both implicit online and offline movement corrections utilize the same visuomotor map for feedforward movement control that transforms the spatial location of visual objects into appropriate motor commands. First, we artificially distorted the visuomotor map by applying opposite visual rotations to the cursor representing the hand position while human participants reached for two different targets. This procedure implicitly altered the visuomotor map so that changes in the movement direction to the target location were more insensitive or more sensitive. Then, we examined how such visuomotor map distortion influenced online movement correction by suddenly changing the target location. The magnitude of online movement correction was altered according to the shape of the visuomotor map. We also examined offline movement correction; the aftereffect induced by visual rotation in the previous trial was modulated according to the shape of the visuomotor map. These results highlighted the importance of the visuomotor map as a foundation for implicit motor control mechanisms and the intimate relationship between feedforward control, feedback control, and motor adaptation. |
format | Online Article Text |
id | pubmed-4891765 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Society for Neuroscience |
record_format | MEDLINE/PubMed |
spelling | pubmed-48917652016-06-03 Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 Hayashi, Takuji Yokoi, Atsushi Hirashima, Masaya Nozaki, Daichi eNeuro New Research When a visually guided reaching movement is unexpectedly perturbed, it is implicitly corrected in two ways: immediately after the perturbation by feedback control (online correction) and in the next movement by adjusting feedforward motor commands (offline correction or motor adaptation). Although recent studies have revealed a close relationship between feedback and feedforward controls, the nature of this relationship is not yet fully understood. Here, we show that both implicit online and offline movement corrections utilize the same visuomotor map for feedforward movement control that transforms the spatial location of visual objects into appropriate motor commands. First, we artificially distorted the visuomotor map by applying opposite visual rotations to the cursor representing the hand position while human participants reached for two different targets. This procedure implicitly altered the visuomotor map so that changes in the movement direction to the target location were more insensitive or more sensitive. Then, we examined how such visuomotor map distortion influenced online movement correction by suddenly changing the target location. The magnitude of online movement correction was altered according to the shape of the visuomotor map. We also examined offline movement correction; the aftereffect induced by visual rotation in the previous trial was modulated according to the shape of the visuomotor map. These results highlighted the importance of the visuomotor map as a foundation for implicit motor control mechanisms and the intimate relationship between feedforward control, feedback control, and motor adaptation. Society for Neuroscience 2016-06-03 /pmc/articles/PMC4891765/ /pubmed/27275006 http://dx.doi.org/10.1523/ENEURO.0032-16.2016 Text en Copyright © 2016 Hayashi et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. |
spellingShingle | New Research Hayashi, Takuji Yokoi, Atsushi Hirashima, Masaya Nozaki, Daichi Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 |
title | Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 |
title_full | Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 |
title_fullStr | Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 |
title_full_unstemmed | Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 |
title_short | Visuomotor Map Determines How Visually Guided Reaching Movements are Corrected Within and Across Trials123 |
title_sort | visuomotor map determines how visually guided reaching movements are corrected within and across trials123 |
topic | New Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4891765/ https://www.ncbi.nlm.nih.gov/pubmed/27275006 http://dx.doi.org/10.1523/ENEURO.0032-16.2016 |
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