听力正常人畸变产物耳声发射的基本特性  

A research for basic properties of distortion product otoacoustic emissions in normally hearing subjects

作　　者：刘爱国[1] 崔永华[1] 黄红彦[1] 葛新[1] 王春芳[1] 

机构地区：[1]同济医科大学附属同济医院耳鼻咽喉科,武汉430030

出　　处：《临床耳鼻咽喉科杂志》1998年第10期435-435,共1页Journal of Clinical Otorhinolaryngology

摘　　要：利用耳动态分析仪ILO－92，对48例听力正常人（86耳）在4组不同原始刺激强度下（L1＝L2＝75dBSPL；L1＝L2＝65dBSPL；L1＝L2＝60dBSPL；L1＝65dBSPL，L2＝50dBSPL）进行畸变产物耳声发射（DPOAES）检查，结果发现平均DPOAEs图是双叶型轮廓：在1．5kHz和5kHz附近，2f1-f2DPOAEs存在两个高峰，在2．5～3kHz附近存在一个低谷，此图型结构无性别、耳别差异。DPOAEs反应的幅值随原始刺激强度增加而升高，平均幅值较原始刺激强度低55～65dBSPL。在4组不同原始刺激强度下，在1～6kHz范围内各个频率2f1－f2DPOAEs值存在显著性差异（P＜0．05）。With ILO-92 Otodynamics Analyzer, distortion product otoacoustic emissions (DPOAEs)at the 2 f1-f2 frequency were recorded from 86 normally hearing ears in response to four groups of different primary levels (L1 = L2 = 75 dB SPL; L1 = L2 = 65 dB SPL; L1 = L2 = 60 dB SPL ;L1 = 65 dB SPL,L2 = 50 dB SPL). The average DPOAEs-gram demonstrated a bilobed contour with two peaks at approximately 1. 5 kHz and 5 kHz and a 'notch' between 2. 5 kHz and 3 kHz. Moreover,the contour of DPOAEs-gram had no obvious changes with sex,ear or primary stimulus levels differences. While the primary levels increased, the amplitude of DPOAEs gradua1ly increased,which was about 55~65 dB SPL below the primary levels. At each frequency from 1~6 kHz,statistical analysis showed that there existed significantly different DPOAEs level under four groups of different prirnary stimulus levels.

关 键 词：诱发反应 耳声发射 畸变产物 

分 类 号：R339.16[医药卫生—人体生理学] R764.04[医药卫生—基础医学]