Effects of the direction of sound stimuli on body sway in young healthy individuals

IF 2.8 3区医学 Q2 NEUROSCIENCES

Neuroscience Pub Date : 2025-05-19 DOI:10.1016/j.neuroscience.2025.05.029

Shintaro Otsuka, Tadashi Nishimura, Tadao Okayasu, Osamu Saito, Tadashi Kitahara

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Abstract

Sound has been suggested to improve human balance control; however, the optimal direction of sound presentation is unclear. This study aimed to evaluate the effect of sound presentation direction on postural stability. Thirty-one healthy young volunteers (mean age 24.1 ± 2.6 years) participated. Posturography was performed in five acoustic conditions (white noise at 60 dBA delivered from the front, back, left, and right and a silence condition), two visual conditions (eyes open/eyes closed), and two standing conditions (foam surface/firm surface). The total sway area, mean sway velocity, and root mean square (RMS) sway were measured. A three-way repeated-measures analysis of variance with a within-group factor was conducted, followed by post hoc pairwise comparisons using Bonferroni adjustments. When standing on foam with the eyes closed, total sway area and RMS sway were significantly smaller with sound from behind than in silence, and mean sway velocity was significantly smaller with sound from the front than from the left. Sound presented from behind or the front reduced posturography parameter values, suggesting that the direction of sound presentation helps stabilize postural sway.

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声音刺激方向对年轻健康个体身体摇摆的影响。

声音被认为可以改善人的平衡控制；然而，声音呈现的最佳方向尚不明确。本研究旨在探讨声音呈现方向对体位稳定性的影响。31名健康青年志愿者（平均年龄24.1 ± 2.6 岁）参加了研究。姿势照相在五种声学条件下进行（从前、后、左、右发出60 dBA的白噪声和沉默条件），两种视觉条件（睁眼/闭眼）和两种站立条件（泡沫表面/坚固表面）。测量总摆动面积、平均摆动速度和均方根（RMS）摆动。采用组内因素进行三方重复测量方差分析，随后采用Bonferroni调整进行事后两两比较。当闭眼站立在泡沫上时，来自背后的声音明显小于沉默时的总摆动面积和均方根摆动，来自前方的声音明显小于来自左侧的声音。从后面或前面发出的声音降低了姿势参数值，表明声音呈现的方向有助于稳定姿势摇摆。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Neuroscience 医学-神经科学

CiteScore

6.20

自引率

0.00%

发文量

394

审稿时长

52 days

期刊介绍： Neuroscience publishes papers describing the results of original research on any aspect of the scientific study of the nervous system. Any paper, however short, will be considered for publication provided that it reports significant, new and carefully confirmed findings with full experimental details.