Takako Yokoyama, Koji Takahashi, Yosuke Kudo, Takashi Jono, Ken Johkura
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引用次数: 0
Abstract
Background: Sound stimulation can influence electrophysiological vestibular reflexes. However, the effects of sound stimulation on space perception remain unknown.
Objective: To know the effects of monaural sound stimulation on subjective visual vertical (SVV).
Methods: We measured SVV with and without monaural sound stimulation (105 dB, 500 Hz short tone burst presented at 4.7 Hz) in 50 healthy volunteers (aged 20-77 [mean = 42.7] years).
Results: The mean SVV was deviated 0.139° to the left by right monaural sound stimulation and 0.123° to the right by left monaural sound stimulation. SVV changes due to right and left ear stimulations were significantly different (p = 0.019). Sound stimulation resulted in a significant change in SVV on the left side (p = 0.014) in participants aged 50 or younger (mean = 35.6 years) (n = 37).
Conclusions: This study is the first to show the possibility that the monaural sound input deviates the SVV toward the opposite side and is more pronounced for left-ear input. The vestibular-evoked myogenic potential responses may be involved in the mechanism of the contralateral SVV deviation due to sound input.
期刊介绍:
Journal of Vestibular Research is a peer-reviewed journal that publishes experimental and observational studies, review papers, and theoretical papers based on current knowledge of the vestibular system. Subjects of the studies can include experimental animals, normal humans, and humans with vestibular or other related disorders. Study topics can include the following:
Anatomy of the vestibular system, including vestibulo-ocular, vestibulo-spinal, and vestibulo-autonomic pathways
Balance disorders
Neurochemistry and neuropharmacology of balance, both at the systems and single neuron level
Neurophysiology of balance, including the vestibular, ocular motor, autonomic, and postural control systems
Psychophysics of spatial orientation
Space and motion sickness
Vestibular rehabilitation
Vestibular-related human performance in various environments