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Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg
Upright postural control is regulated by afferent and efferent/reafferent visual mechanisms. There are two types of efferent and conjugate eye movements: saccades and smooth pursuits. Although postural control is improved by saccades, the effects of smooth pursuits on postural control are still deba...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9560487/ https://www.ncbi.nlm.nih.gov/pubmed/36227896 http://dx.doi.org/10.1371/journal.pone.0276119 |
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author | Nakahara, Hikaru Nawata, Rukia Matsuo, Ryota Ohgomori, Tomohiro |
author_facet | Nakahara, Hikaru Nawata, Rukia Matsuo, Ryota Ohgomori, Tomohiro |
author_sort | Nakahara, Hikaru |
collection | PubMed |
description | Upright postural control is regulated by afferent and efferent/reafferent visual mechanisms. There are two types of efferent and conjugate eye movements: saccades and smooth pursuits. Although postural control is improved by saccades, the effects of smooth pursuits on postural control are still debated, because the difficulties of postural and visual tasks differ in the previous research. Additionally, the mechanisms that interfere with postural control and smooth pursuit are not fully understood. To address these issues, we examined the effects of different patterns of smooth-pursuit eye movement on the path length of the center of pressure (COP) displacement under bipedal and unipedal standing conditions. The relative frequency and amplitude of the COP displacement were remarkably increased when uniform linear visual targets were presented during unipedal standing. In addition, dynamic time warping analysis demonstrated that the similarity between the displacement of the COP and eye movements was increased by the presentation of uniform linear visual targets with orientation selectivity during unipedal standing but not during bipedal standing. In contrast, the attenuation of similarity between the displacement of the COP and eye movements significantly decreased the path length, relative frequency, and amplitude of the COP displacement. Our results indicate that postural stability is deteriorated by the increase of similarity between the displacement of the COP and smooth-pursuit eye movements under unstable conditions. |
format | Online Article Text |
id | pubmed-9560487 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-95604872022-10-14 Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg Nakahara, Hikaru Nawata, Rukia Matsuo, Ryota Ohgomori, Tomohiro PLoS One Research Article Upright postural control is regulated by afferent and efferent/reafferent visual mechanisms. There are two types of efferent and conjugate eye movements: saccades and smooth pursuits. Although postural control is improved by saccades, the effects of smooth pursuits on postural control are still debated, because the difficulties of postural and visual tasks differ in the previous research. Additionally, the mechanisms that interfere with postural control and smooth pursuit are not fully understood. To address these issues, we examined the effects of different patterns of smooth-pursuit eye movement on the path length of the center of pressure (COP) displacement under bipedal and unipedal standing conditions. The relative frequency and amplitude of the COP displacement were remarkably increased when uniform linear visual targets were presented during unipedal standing. In addition, dynamic time warping analysis demonstrated that the similarity between the displacement of the COP and eye movements was increased by the presentation of uniform linear visual targets with orientation selectivity during unipedal standing but not during bipedal standing. In contrast, the attenuation of similarity between the displacement of the COP and eye movements significantly decreased the path length, relative frequency, and amplitude of the COP displacement. Our results indicate that postural stability is deteriorated by the increase of similarity between the displacement of the COP and smooth-pursuit eye movements under unstable conditions. Public Library of Science 2022-10-13 /pmc/articles/PMC9560487/ /pubmed/36227896 http://dx.doi.org/10.1371/journal.pone.0276119 Text en © 2022 Nakahara et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://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 Nakahara, Hikaru Nawata, Rukia Matsuo, Ryota Ohgomori, Tomohiro Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
title | Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
title_full | Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
title_fullStr | Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
title_full_unstemmed | Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
title_short | Deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
title_sort | deterioration of postural control due to the increase of similarity between center of pressure and smooth-pursuit eye movements during standing on one leg |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9560487/ https://www.ncbi.nlm.nih.gov/pubmed/36227896 http://dx.doi.org/10.1371/journal.pone.0276119 |
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