Department of Kinesiology, School of Health and Human Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, United States of America.
Music and Arts Technology, Computer Information and Graphics Technology, Purdue School of Engineering & Technology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, United States of America.
PLoS One. 2021 Sep 28;16(9):e0258000. doi: 10.1371/journal.pone.0258000. eCollection 2021.
Movement of the visual environment presented through virtual reality (VR) has been shown to invoke postural adjustments measured by increased body sway. The effect of auditory information on body sway seems to be dependent on context with sounds such as white noise, tones, and music being used to amplify or suppress sway. This study aims to show that music manipulated to match VR motion further increases body sway. Twenty-eight subjects stood on a force plate and experienced combinations of 3 visual conditions (VR translation in the AP direction at 0.1 Hz, no translation, and eyes closed) and 4 music conditions (Mozart's Jupiter Symphony modified to scale volume at 0.1 Hz and 0.25 Hz, unmodified music, and no music) Body sway was assessed by measuring center of pressure (COP) velocities and RMS. Cross-coherence between the body sway and the 0.1 Hz and 0.25 Hz stimuli was also determined. VR translations at 0.1 Hz matched with 0.1Hz shifts in music volume did not lead to more body sway than observed in the no music and unmodified music conditions. Researchers and clinicians may consider manipulating sound to enhance VR induced body sway, but findings from this study would not suggest using volume to do so.
虚拟现实（VR）中呈现的视觉环境运动已被证明会引起姿势调整，表现为身体摆动增加。听觉信息对身体摆动的影响似乎取决于环境，例如使用白噪声、音调、音乐等来放大或抑制摆动。本研究旨在表明，与 VR 运动相匹配的音乐可以进一步增加身体摆动。28 名受试者站在力板上，经历了 3 种视觉条件（VR 在 AP 方向以 0.1Hz 的平移、无平移和闭眼）和 4 种音乐条件（莫扎特《木星交响曲》按 0.1Hz 和 0.25Hz 缩放音量、未修改的音乐和无音乐）的组合。通过测量中心压力（COP）速度和 RMS 来评估身体摆动。还确定了身体摆动与 0.1Hz 和 0.25Hz 刺激之间的交叉相干性。与 0.1Hz 音乐音量变化相匹配的 0.1Hz VR 平移不会导致比无音乐和未修改音乐条件下观察到的更多的身体摆动。研究人员和临床医生可能会考虑操纵声音来增强 VR 引起的身体摆动，但本研究的结果不会建议使用音量来实现。
