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壶腹嵴阈值测定,定量旋转试法等具有刺激量精确,刺激参数稳定等优点,可用以对患者的前庭功能状态作长期动态观察,但现有旋转试法的缺点均为不能单独刺激一侧迷路的壶腹嵴感受器。作者为探讨文献中关于旋转试法可选择性地刺激一侧迷路的论点,采用将一侧迷路置于旋转轴上(对壶腹嵴不产生刺激)、而受试侧耳处于偏心(远中)位上的旋转法,使其在旋转开始和停止时均受到角加速度作用,用E NG记录检查结果。所用刺激量(45/秒角速度,在0.15秒内停转)远较用Barany转椅的常规方法为小。用上述定量旋转试法共检查了10人(一侧前庭功能完全丧失者7人,健康对照组3人),患者组1例系第Ⅷ神经瘤,余6例均为曾罹患单侧化脓性
Ampulla crest threshold determination, quantitative rotation test method has the advantages of precise stimulation and stable stimulation parameters, which can be used to make long-term dynamic observation of the patients’ vestibular function status. However, the shortcomings of the existing rotation test methods are that one side can not be stimulated alone Lost ampulla crest receptors. In order to explore the argument that the rotation test can selectively stimulate one side to get lost, the author adopts the method of placing one side lost on the rotation axis (no stimulation to the ampulla of the ampulla) while the side of the ear under test is eccentric (far center) Bit rotation method, so that both start and stop rotation are subject to angular acceleration effect, record the test results with E NG. The amount of stimulation used (45 / s angular velocity, stopping within 0.15 seconds) is much less than the conventional method using a Barany swivel chair. A total of 10 subjects (7 with complete loss of vestibular function on one side and 3 healthy controls) were examined using the quantitative rotation test described above. One patient was found to have a grade VIII neuroma, and the other six were those with unilateral suppurative