Effects of auditory noise intensity and color on the dynamics of upright stance

被引：2
作者：
Sam Carey
Jessica M. Ross
Drew Abney
Ramesh Balasubramaniam
机构：
[1] University of California,Cognitive & Information Sciences
[2] Merced,Department of Psychiatry and Behavioral Sciences
[3] Veterans Affairs Palo Alto Healthcare System,Department of Psychology
[4] Stanford University Medical School,undefined
[5] University of Georgia,undefined
来源：
Scientific Reports | / 14卷 / 1期
关键词：
Postural sway; Auditory feedback; Intensity; White noise; Pink noise; Brown noise;
D O I：
10.1038/s41598-024-61186-0
中图分类号：
学科分类号：
摘要：
Previous work assessing the effect of additive noise on the postural control system has found a positive effect of additive white noise on postural dynamics. This study covers two separate experiments that were run sequentially to better understand how the structure of the additive noise signal affects postural dynamics, while also furthering our knowledge of how the intensity of auditory stimulation of noise may elicit this phenomenon. Across the two experiments, we introduced three auditory noise stimulations of varying structure (white, pink, and brown noise). Experiment 1 presented the stimuli at 35 dB while Experiment 2 was presented at 75 dB. Our findings demonstrate a decrease in variability of the postural control system regardless of the structure of the noise signal presented, but only for high intensity auditory stimulation.
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