Yagi T, Kurosaki S, Yamanobe S, Morizono T
Department of Otolaryngology, Nippon Medical School, Tokyo, Japan.
Arch Otolaryngol Head Neck Surg. 1992 Oct;118(10):1077-80. doi: 10.1001/archotol.1992.01880100069015.
Three-component analysis of caloric nystagmus, focusing on the horizontal, vertical, and torsional, using a computerized eye movement analysis system, was carried out in 10 normal human subjects. The caloric response was induced by cold stimulation to the right ear of the subjects in the supine and prone positions. In the supine position, the three components of nystagmus were toward the left (10 subjects), upward (eight subjects) or downward (two subjects), and clockwise (10 subjects). In the prone position, on the other hand, the three components were directed toward the right (10 subjects), downward (five subjects), upward (three subjects), and counterclockwise (10 subjects); there was no vertical direction in two subjects. These findings indicate that caloric stimulation activates the three semicircular canals simultaneously. Also the changes in the nystagmus direction in the supine and prone positions could be explained, at least partially, by the nonconvective component of caloric stimulation.
使用计算机化眼动分析系统，对10名正常人类受试者进行了热量性眼震的三成分分析，重点关注水平、垂直和扭转成分。通过对仰卧位和俯卧位受试者的右耳进行冷刺激来诱发热量反应。在仰卧位时，眼震的三个成分向左（10名受试者）、向上（8名受试者）或向下（2名受试者），且为顺时针方向（10名受试者）。另一方面，在俯卧位时，三个成分向右（10名受试者）、向下（5名受试者）、向上（3名受试者），且为逆时针方向（10名受试者）；2名受试者没有垂直方向。这些发现表明热量刺激同时激活了三个半规管。此外，仰卧位和俯卧位时眼震方向的变化至少可以部分地由热量刺激的非对流成分来解释。
