畸变产物耳声发射与瞬态诱发耳声发射的相关性观察

目的：探讨畸变产物耳声发射（DPOAE)和瞬态诱发耳声发射(TEOAE)的特点和相关性。方法：以20例（40耳）耳科正常青年人观察噪声暴露前后在无对侧抑制（NCS)状态下和有对侧抑制（CS)状态下TEOAE的频带信噪比、频带反应幅值,与DPOAE的2f1-f2幅值、信噪比相互间的相关性。结果：DPOAE与TEOAE虽由不同的刺激声所引出,有各自的图形特征,但在绝大多数相近频率点上,其测量值有较好的相关性,形成一定的数量关系。结论：TEOAE测试较为快捷并有中频优势,而DPOAE则有很好的频率特异性和高频优势。二者幅值及信噪比间有良好的相关性,可得出有统计意义的线性回归方程参数,听觉损害,噪声性。

A study on the correlation between distortion product otoacoustic emissions and transient evoked otoacoustic emissions

Objective:To study the characteristic and correlation of distortion product otoacoustic emissions and transient evoked otoacoustic emissions. Method: Contrast Band SNR and Band response amplitude of TEOAE with 2f1~f2 amplitude and SNR of DPOAE were in vestigatcd in states before or after noise exposure with or without contralateral suppression(CS) in 20 (40 ears) normal otologic youth volunteer subjects. Result: Although evoked by different acoustic stimulus and showed various characteristics of patterns respectively, DPOAE and TEOAE had a good correlation between their measureing values at most adjacent frequencies thus formed certain value relation. Conclusion: TEOAE measurement is save time and superior in middle frequency range while DPOAE measurement is better frequency specific and superior in the higher frequency. Between their amplitude and SNR there were good correlations so significant linear regression parameters can be obtained. According to these mentioned &-bove they could be selected and used, moreover, make up a deficiency each other in scientific research and clinical practice.