A.0%~20%B.20%~40%C.40%~60%D.60%~80%E.80%~100%短增量敏感指数试验在耳蜗病变时,敏感指数可高达

作者: rantiku 人气: - 评论: 0
问题 A.0%~20% B.20%~40% C.40%~60% D.60%~80% E.80%~100% 短增量敏感指数试验在耳蜗病变时,敏感指数可高达
选项
答案 E
解析 :短增量敏感指数(SISI)试验法是测试受试耳对阈上20dB连续声信号中出现的微弱强度变化(1dB)的敏感性,以每5s出现1次,共计20次声强微增变化中的正确辨别率,即敏感指数来表示。耳蜗病变时,敏感指数可高达80%~100%,正常耳及其他耳聋一般为0%~20%。

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