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Effects of simulated peripheral visual field loss on the static postural control in young healthy adults

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Title: Effects of simulated peripheral visual field loss on the static postural control in young healthy adults
Authors: Taneda, Kenji Browse this author
Mani, Hiroki Browse this author
Kato, Norio Browse this author
Komizunai, Shunsuke Browse this author →KAKEN DB
Ishikawa, Keita Browse this author
Maruya, Takashi Browse this author
Hasegawa, Naoya Browse this author →KAKEN DB
Takamatsu, Yasuyuki Browse this author →KAKEN DB
Asaka, Tadayoshi Browse this author →KAKEN DB
Keywords: Center of pressure
Sensory reweighting
Static postural control
Virtual reality
Visual field loss
Issue Date: May-2021
Publisher: Elsevier
Journal Title: Gait & Posture
Volume: 86
Start Page: 233
End Page: 239
Publisher DOI: 10.1016/j.gaitpost.2021.03.011
Abstract: Background: Integration of visual, vestibular, and proprioceptive sensations contributes to postural control. People with peripheral visual field loss have serious postural instability. However, the directional specificity of postural stability and sensory reweighting caused by gradual peripheral visual field loss remain unclear. Research question: What are the effects of peripheral visual field loss on static postural control? Methods: Fifteen healthy young adults participated in this study. The participants were asked to stand quietly on a foam surface. Three conditions of virtual visual field loss (90?, 45?, and 15?) were provided by a head-mounted display, and ground reaction forces were collected using a force plate to calculate the displacements of the center of pressure (COP). Results: The root mean square (RMS), mean velocity, and 95% ellipse area of COP displacements in the horizontal plane increased, and RMS in the anteroposterior (AP) direction was unchanged under the smallest visual field condition compared to the largest one. The power spectrum density of COP displacements in the low-frequency band was decreased and that in the medium-frequency band was increased in the AP direction. Significance: During quiet standing of young healthy adults with peripheral visual field loss, increased peripheral visual field loss resulted in lower postural stability. Postural stability in the AP direction was maintained contrary to the functional sensitivity hypothesis. Peripheral visual field loss reduced the weighting of the visual input and increased that of the vestibular input in the AP direction to maintain equilibrium.
Type: article
Appears in Collections:保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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