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Limited Plasticity of Prismatic Visuomotor Adaptation
Movements toward an object displaced optically through prisms adapt quickly, a striking example for the plasticity of neuronal visuomotor programs. We investigated the degree and time course of this system’s plasticity. Participants performed goal-directed throwing or pointing movements with termina...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5407531/ https://www.ncbi.nlm.nih.gov/pubmed/28473909 http://dx.doi.org/10.1177/2041669517701458 |
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author | Spang, Karoline Wischhusen, Sven Fahle, Manfred |
author_facet | Spang, Karoline Wischhusen, Sven Fahle, Manfred |
author_sort | Spang, Karoline |
collection | PubMed |
description | Movements toward an object displaced optically through prisms adapt quickly, a striking example for the plasticity of neuronal visuomotor programs. We investigated the degree and time course of this system’s plasticity. Participants performed goal-directed throwing or pointing movements with terminal feedback before, during, and after wearing prism goggles shifting the visual world laterally either to the right or to the left. Prism adaptation was incomplete even after 240 throwing movements, still deviating significantly laterally by on average of 0.8° (CI = 0.20°) at the end of the adaptation period. The remaining lateral deviation was significant for pointing movements only with left shifting prisms. In both tasks, removal of the prisms led to an aftereffect which disappeared in the course of further training. This incomplete prism adaptation may be caused by movement variability combined with an adaptive neuronal control system exhibiting a finite capacity for evaluating movement errors. |
format | Online Article Text |
id | pubmed-5407531 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-54075312017-05-04 Limited Plasticity of Prismatic Visuomotor Adaptation Spang, Karoline Wischhusen, Sven Fahle, Manfred Iperception Article Movements toward an object displaced optically through prisms adapt quickly, a striking example for the plasticity of neuronal visuomotor programs. We investigated the degree and time course of this system’s plasticity. Participants performed goal-directed throwing or pointing movements with terminal feedback before, during, and after wearing prism goggles shifting the visual world laterally either to the right or to the left. Prism adaptation was incomplete even after 240 throwing movements, still deviating significantly laterally by on average of 0.8° (CI = 0.20°) at the end of the adaptation period. The remaining lateral deviation was significant for pointing movements only with left shifting prisms. In both tasks, removal of the prisms led to an aftereffect which disappeared in the course of further training. This incomplete prism adaptation may be caused by movement variability combined with an adaptive neuronal control system exhibiting a finite capacity for evaluating movement errors. SAGE Publications 2017-04-10 /pmc/articles/PMC5407531/ /pubmed/28473909 http://dx.doi.org/10.1177/2041669517701458 Text en © The Author(s) 2017 http://creativecommons.org/licenses/by/3.0/ This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Article Spang, Karoline Wischhusen, Sven Fahle, Manfred Limited Plasticity of Prismatic Visuomotor Adaptation |
title | Limited Plasticity of Prismatic Visuomotor Adaptation |
title_full | Limited Plasticity of Prismatic Visuomotor Adaptation |
title_fullStr | Limited Plasticity of Prismatic Visuomotor Adaptation |
title_full_unstemmed | Limited Plasticity of Prismatic Visuomotor Adaptation |
title_short | Limited Plasticity of Prismatic Visuomotor Adaptation |
title_sort | limited plasticity of prismatic visuomotor adaptation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5407531/ https://www.ncbi.nlm.nih.gov/pubmed/28473909 http://dx.doi.org/10.1177/2041669517701458 |
work_keys_str_mv | AT spangkaroline limitedplasticityofprismaticvisuomotoradaptation AT wischhusensven limitedplasticityofprismaticvisuomotoradaptation AT fahlemanfred limitedplasticityofprismaticvisuomotoradaptation |