正常青年女性畸变产物耳声发射测试分析

目的：检查正常青年人DPOAE范围，为临床应用提供良好依据。方法：对30例（60耳）听力正常青年人，用CAPELLA机型耳声发射仪进行DPOAE测试，选择初始音强度L1＝70dBSPL,L2=60dBSPL，水平差10dBSPL。结果：DPOAE总检出率为100％，正常青年人DPOAE幅值差距大，显示出明显个体差异，不同频率处DPOAE幅值有所不同，1KHz，8KHz处幅值最大，信噪比各频率均在10dBSPL以上（明显高出3dBSPL）。结论：发现不同频率下DPOAE图形非光滑曲线，而呈双峰型，双耳显著差异（P＞0．05).

An analysis of DPOAE examination in healthy youth

Objective In order to provide basis for clinical use,DPOAE exams were conducted in healthy youth.Methods 30 healthy youth (60 ears) were detected for DPOAE using OAE apparatus of CAPELLA type.L 1 =70 dB SPL,L 2 =60 dB SPL were selected as initial intensities.The level difference was 10dB SPL.Results The total detectable rate of DPOAE was 100%.Significant differences existed between different individuals.The values of amplitude were different for separate frequencies.It was biggest in 1KHz and 8KHz.S/N ratio was higher than 10 dB SPL (significantly higher than 3dB SPL) for all frequencies.Conclusion The curves of DPOAE are not smooth under different frequencies,manifesting 2 peaks feature.No significant differences exist between bilateral ears ( P >0 05)