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Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes

Reaching with a visuomotor distortion in a virtual environment leads to reach adaptation in the trained hand, and in the untrained hand. In the current study we asked if reach adaptation in the untrained (right) hand is due to transfer of explicit adaptation (EA; strategic changes in reaches) and/or...

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Autores principales: Bouchard, Jean-Michel, Cressman, Erin K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7799748/
https://www.ncbi.nlm.nih.gov/pubmed/33428665
http://dx.doi.org/10.1371/journal.pone.0245184
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author Bouchard, Jean-Michel
Cressman, Erin K.
author_facet Bouchard, Jean-Michel
Cressman, Erin K.
author_sort Bouchard, Jean-Michel
collection PubMed
description Reaching with a visuomotor distortion in a virtual environment leads to reach adaptation in the trained hand, and in the untrained hand. In the current study we asked if reach adaptation in the untrained (right) hand is due to transfer of explicit adaptation (EA; strategic changes in reaches) and/or implicit adaptation (IA; unconscious changes in reaches) from the trained (left) hand, and if this transfer changes depending on instructions provided. We further asked if EA and IA are retained in both the trained and untrained hands. Participants (n = 60) were divided into 3 groups (Instructed (provided with instructions on how to counteract the visuomotor distortion), Non-Instructed (no instructions provided), and Control (EA not assessed)). EA and IA were assessed in both the trained and untrained hands immediately following rotated reach training with a 40° visuomotor distortion, and again 24 hours later by having participants reach in the absence of cursor feedback. Participants were to reach (1) so that the cursor landed on the target (EA + IA), and (2) so that their hand landed on the target (IA). Results revealed that, while initial EA observed in the trained hand was greater for the Instructed versus Non-Instructed group, the full extent of EA transferred between hands for both groups and was retained across days. IA observed in the trained hand was greatest in the Non-Instructed group. However, IA did not significantly transfer between hands for any of the three groups. Limited retention of IA was observed in the trained hand. Together, these results suggest that while initial EA and IA in the trained hand are dependent on instructions provided, transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven almost exclusively by EA.
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spelling pubmed-77997482021-01-22 Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes Bouchard, Jean-Michel Cressman, Erin K. PLoS One Research Article Reaching with a visuomotor distortion in a virtual environment leads to reach adaptation in the trained hand, and in the untrained hand. In the current study we asked if reach adaptation in the untrained (right) hand is due to transfer of explicit adaptation (EA; strategic changes in reaches) and/or implicit adaptation (IA; unconscious changes in reaches) from the trained (left) hand, and if this transfer changes depending on instructions provided. We further asked if EA and IA are retained in both the trained and untrained hands. Participants (n = 60) were divided into 3 groups (Instructed (provided with instructions on how to counteract the visuomotor distortion), Non-Instructed (no instructions provided), and Control (EA not assessed)). EA and IA were assessed in both the trained and untrained hands immediately following rotated reach training with a 40° visuomotor distortion, and again 24 hours later by having participants reach in the absence of cursor feedback. Participants were to reach (1) so that the cursor landed on the target (EA + IA), and (2) so that their hand landed on the target (IA). Results revealed that, while initial EA observed in the trained hand was greater for the Instructed versus Non-Instructed group, the full extent of EA transferred between hands for both groups and was retained across days. IA observed in the trained hand was greatest in the Non-Instructed group. However, IA did not significantly transfer between hands for any of the three groups. Limited retention of IA was observed in the trained hand. Together, these results suggest that while initial EA and IA in the trained hand are dependent on instructions provided, transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven almost exclusively by EA. Public Library of Science 2021-01-11 /pmc/articles/PMC7799748/ /pubmed/33428665 http://dx.doi.org/10.1371/journal.pone.0245184 Text en © 2021 Bouchard, Cressman http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Bouchard, Jean-Michel
Cressman, Erin K.
Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
title Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
title_full Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
title_fullStr Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
title_full_unstemmed Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
title_short Intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
title_sort intermanual transfer and retention of visuomotor adaptation to a large visuomotor distortion are driven by explicit processes
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7799748/
https://www.ncbi.nlm.nih.gov/pubmed/33428665
http://dx.doi.org/10.1371/journal.pone.0245184
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