Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Nakahara, Hikaru, Nawata, Rukia, Matsuo, Ryota, Ohgomori, Tomohiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
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
_version_ 1784807757871841280
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
work_keys_str_mv AT nakaharahikaru deteriorationofposturalcontrolduetotheincreaseofsimilaritybetweencenterofpressureandsmoothpursuiteyemovementsduringstandingononeleg
AT nawatarukia deteriorationofposturalcontrolduetotheincreaseofsimilaritybetweencenterofpressureandsmoothpursuiteyemovementsduringstandingononeleg
AT matsuoryota deteriorationofposturalcontrolduetotheincreaseofsimilaritybetweencenterofpressureandsmoothpursuiteyemovementsduringstandingononeleg
AT ohgomoritomohiro deteriorationofposturalcontrolduetotheincreaseofsimilaritybetweencenterofpressureandsmoothpursuiteyemovementsduringstandingononeleg