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Overt visual attention and between-limb asynchrony for bimanual reaching movements

Although synchrony between the limbs is an often-cited feature of bimanual coordination, recent studies have also highlighted the small asynchronies that can occur. The visuo-motor demands of any bimanual task are considered central to the emergence of asynchrony, but the relationship between the tw...

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Autores principales: Sardar, S. D., Yeo, S.-H., Allsop, J. E., Punt, T. D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9894997/
https://www.ncbi.nlm.nih.gov/pubmed/36658440
http://dx.doi.org/10.1007/s00221-023-06552-6
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author Sardar, S. D.
Yeo, S.-H.
Allsop, J. E.
Punt, T. D.
author_facet Sardar, S. D.
Yeo, S.-H.
Allsop, J. E.
Punt, T. D.
author_sort Sardar, S. D.
collection PubMed
description Although synchrony between the limbs is an often-cited feature of bimanual coordination, recent studies have also highlighted the small asynchronies that can occur. The visuo-motor demands of any bimanual task are considered central to the emergence of asynchrony, but the relationship between the two remains largely unexplored. This study aimed to address this issue. Hand and eye movements were measured in 19 participants, while they made either unimanual or bimanual reach-to-point (aiming) movements to targets presented on a touchscreen. Bimanual movements were either congruent (same-sized targets) or incongruent (different-sized targets). Resulting hand data showed many of the typical patterns of movement previously reported. While temporal coupling between the limbs remained largely evident for bimanual movements, small between-limb asynchronies were apparent and demonstrated clear associations with the competing precision requirements of the targets and related visual attention. Participants mainly directed their gaze towards the more difficult target with corresponding reaching movements demonstrating greater precision than for the easier target. Additionally, there was a reliable tendency for the hand reaching towards the more difficult target to lead. Importantly, it was the competing visuo-motor demands of individual movements rather than overall difficulty that resulted in greater between-limb asynchrony; accordingly, where both targets were small (i.e., the most difficult condition), asynchrony was significantly less pronounced than for incongruent bimanual conditions. The results show how the visuo-motor system balances its apparent drive for synchrony in coordinating bimanual movements with the competing demands that characterise the constituent unimanual movements.
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spelling pubmed-98949972023-02-04 Overt visual attention and between-limb asynchrony for bimanual reaching movements Sardar, S. D. Yeo, S.-H. Allsop, J. E. Punt, T. D. Exp Brain Res Research Article Although synchrony between the limbs is an often-cited feature of bimanual coordination, recent studies have also highlighted the small asynchronies that can occur. The visuo-motor demands of any bimanual task are considered central to the emergence of asynchrony, but the relationship between the two remains largely unexplored. This study aimed to address this issue. Hand and eye movements were measured in 19 participants, while they made either unimanual or bimanual reach-to-point (aiming) movements to targets presented on a touchscreen. Bimanual movements were either congruent (same-sized targets) or incongruent (different-sized targets). Resulting hand data showed many of the typical patterns of movement previously reported. While temporal coupling between the limbs remained largely evident for bimanual movements, small between-limb asynchronies were apparent and demonstrated clear associations with the competing precision requirements of the targets and related visual attention. Participants mainly directed their gaze towards the more difficult target with corresponding reaching movements demonstrating greater precision than for the easier target. Additionally, there was a reliable tendency for the hand reaching towards the more difficult target to lead. Importantly, it was the competing visuo-motor demands of individual movements rather than overall difficulty that resulted in greater between-limb asynchrony; accordingly, where both targets were small (i.e., the most difficult condition), asynchrony was significantly less pronounced than for incongruent bimanual conditions. The results show how the visuo-motor system balances its apparent drive for synchrony in coordinating bimanual movements with the competing demands that characterise the constituent unimanual movements. Springer Berlin Heidelberg 2023-01-19 2023 /pmc/articles/PMC9894997/ /pubmed/36658440 http://dx.doi.org/10.1007/s00221-023-06552-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Article
Sardar, S. D.
Yeo, S.-H.
Allsop, J. E.
Punt, T. D.
Overt visual attention and between-limb asynchrony for bimanual reaching movements
title Overt visual attention and between-limb asynchrony for bimanual reaching movements
title_full Overt visual attention and between-limb asynchrony for bimanual reaching movements
title_fullStr Overt visual attention and between-limb asynchrony for bimanual reaching movements
title_full_unstemmed Overt visual attention and between-limb asynchrony for bimanual reaching movements
title_short Overt visual attention and between-limb asynchrony for bimanual reaching movements
title_sort overt visual attention and between-limb asynchrony for bimanual reaching movements
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9894997/
https://www.ncbi.nlm.nih.gov/pubmed/36658440
http://dx.doi.org/10.1007/s00221-023-06552-6
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