听力正常人畸变产物耳声发射的基本特征及频谱变化过程分析

The Basic Properties and Spectral History of Distortion - product Otoacoustic Emissions in Young Subjects With Normal Hearing

李华斌

1:同济医科大学附属协和医院耳鼻咽喉科!武汉430022

摘要
为研究DPOAE尤其是DPOAE频谱变化过程的基本特征,根据0.125—8kH_z倍频纯音听阈和鼓室导抗图选择听力正常年轻人19例38耳进行DPOAE的测试.测试的内容包括DP-图、I/O曲线、潜伏期和DPOAE频谱变化过程.结果:DPOAE在正常人均能检出,幅值有明显的个体差异性,DP-图呈双峰伏,峰值分别为9.11±5.28dB SPL和7.72±6.85 dB SPL,位于1.5、6kHz处;3kHz处最小,为5.56±5.84dB SPL,DPOAE幅值随刺激强度的升高而升高,检出阈和潜伏期随频率的升高分别降低和缩短;多数人频谱变化过程曲线平坦,变异系数为253±1.89%,部分耳(7耳)变化过程曲线异常波动,占18.5%;提示频谱变化过程分析可能有反映耳蜗功能的亚临床病变的意义.
关键词
畸变产物耳声发射;频谱变化过程;听力
基金项目(Foundation):
作者
李华斌
参考文献

[1]Lonsbury-Martin BB,Martin GK.Whitehead ML,et al.Acoustic distortion products in rabbit canal.I.Basic features and physiological vulneribility.Hear Res.1987,28:173.

[2]Brown AM.Acoustic distortion products can be used to mornitor the effect of chronic gentamicin treatnwnt.Hear Res,1986,42:143.

[3]Dallos P.The active cochles.J Neurosci.1992.12.4575

[4]Nelson DA,Kimberlay BP.Distortion-product emissions and auditory sensitivity in human ears with normal hearing and cochlear hearing loss.J Speech Hear Res,1992,35:11-42.

[5]Hauser R,Probest R.The influence of systematic primary-tone level variation L_2-L_2 on the acoustic distortion product emssion 2f_1-f_2 in normal hunam ears.J Acoust Soc Am,1990,89:280.

[6]Harris FP,Lonsbury-Martin BB,Stagner AC,et al.Acoustic distortion products in humans:systematic changes in amplitudes as a function of f2/f1 ratio.J Acoust Soc Am.1989,85:220.

本文信息

PDF(202k)

本文作者相关文章

李华斌