Ishizaki H, Pyykkö I, Aalto H, Starck J
Department of Otolaryngology, University Hospital of Helsinki, Finland.
Ann Otol Rhinol Laryngol. 1991 Dec;100(12):976-83. doi: 10.1177/000348949110001205.
The effect of low-frequency sound (LFS) on postural stability was studied in 55 healthy volunteers and in 152 patients with vertigo due to different types of inner ear disease. The sound pressure levels ranged from 130 to 132 dB and were given at frequencies of 25, 50, and 63 Hz. The duration of each stimulation lasted 30 seconds. The postural responses were measured with a force platform. The LFS stimulation improved the postural stability of the healthy subjects through the alerting response. We did not observe any difference in the body sway according to whether the LFS was delivered with monaural or binaural stimulation. Twenty-six percent of the patients with Meniere's disease, 40% with chronic otitis media with vertigo, and 26% with vertigo of peripheral origin experienced significant postural instability at least at two of the three test frequencies during stimulation with LFS. The results demonstrate that in subjects with different types of inner ear disease the vestibular system starts to respond to LFS. The activation of vestibulospinal responses by LFS seems to be an expression of the Tullio phenomenon.
在55名健康志愿者和152名因不同类型内耳疾病而患有眩晕症的患者中，研究了低频声音（LFS）对姿势稳定性的影响。声压级范围为130至132分贝，频率为25、50和63赫兹。每次刺激持续30秒。使用测力平台测量姿势反应。LFS刺激通过警觉反应改善了健康受试者的姿势稳定性。我们没有观察到单耳或双耳刺激LFS时身体摆动有任何差异。26%的梅尼埃病患者、40%的伴有眩晕的慢性中耳炎患者和26%的外周性眩晕患者在LFS刺激期间，至少在三个测试频率中的两个频率上出现了明显的姿势不稳定。结果表明，在患有不同类型内耳疾病的受试者中，前庭系统开始对LFS作出反应。LFS激活前庭脊髓反应似乎是图利奥现象的一种表现。
