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Correlation Between Directions of Postural Sway Induced by Gaze Change and Auditory Stimulation

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posted on 02.06.2022, 07:52 authored by Honoka Koshizaka, Kazunari Hata, Yutaka Fukuoka

  

Directions of postural sway owing to neck dorsal muscle stimulation can be influenced by gaze change.The same is true of auditory stimulation.The degree of influence differs from one subject to another,and the reason for this remains largely unknown.The authors analyzed whether direction of postural sway induced by gaze change and that induced by auditory stimulation were related to each other,with the aim of obtaining insights into the brain region involved in these phenomena.Twenty-three subjects participated in the following two sets of measurements.First, the direction of postural sway was measured when the subjects changed their gaze after they turned their head to either the left or right.Next,the direction of postural sway was measured during auditory stimulation from each side.Then the correlation coefficient between directions in these experiments was calculated.The correlation coefficients were significant on the right side.The results implied that a common mechanism,in which the two sensory information are integrated,is involved in these phenomena. This article provides the experimental data from the subjects and the analyzed results.

History

Corresponding author email address

fukuoka@cc.kogakuin.ac.jp

Translated title

視線および聴覚刺激による身体傾斜方向の相関

Translated description

直立しているヒトの頸背部に振動刺激を与えた際に,視線の方向に身体傾斜が起こることがある.また,聴覚刺激を与えた場合,音源方向に身体傾斜が起こることも確認されている.しかし,この身体傾斜方向は被験者によって異なる.また,その理由については不明な点が多い.そこで我々は,視線の影響で生じた身体傾斜と聴覚刺激によって誘発された身体傾斜が関連しているかを調べた.被験者23名に対して2種類の実験を行った.まず頭部を左右どちらかに回転させた後,視線を頭部方向から移動させた際の身体傾斜方向を計測した.さらに,左右どちらか一方の音源から聴覚刺激を行った際の身体傾斜方向を計測した.この2つの実験の結果から得られた傾斜方向について相関係数を求め,有意性の検定を行った.その結果,2つの身体傾斜方向の相関係数には有意性があるとわかった.このことは,2つの感覚刺激による頸背部振動時の身体傾斜は共通なメカニズムの影響を受けていることを示唆している.本稿では各被験者の測定結果と解析結果を提供する.

Translated manuscript title

視線および聴覚刺激による身体傾斜方向の関連について―異種感覚情報は共通なメカニズムで処理されるのか―

Translated authors

越坂ほのか 秦 和也 福岡 豊

Copyright

©2019 Authors