Yang Y, Kong W, Zhang W
Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022.
Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2001 Sep;15(9):411-3.
To establish a stable detecting method of distortion product otoacoustic emissions (DPOAEs).
After cutting off tragus, seven healthy pigmented guinea pigs (thirteen ears) were selected to measure the DPOAEs at the frequency of 2f1-f2 (cubic DPOAEs). The I/O function and latency at f2 = 2, 4, 6 kHz were analyzed.
The incidence of DPOAEs at all frequencies was 100%. The maximal amplitude of input-output function was (27.24 +/- 4.15) dB SPL, (27.98 +/- 4.05) dB SPL and (41.45 +/- 1.20) dB SPL respectively; latency was (2.06 +/- 0.21) ms, (1.52 +/- 0.16) ms and (1.37 +/- 0.08) ms at the corresponding frequencies.
After the improvement of detection, it is satisfactory to measuring DPOAE in animals because of the high incidence, high amplitude and good repetition.
建立一种稳定的畸变产物耳声发射（DPOAEs）检测方法。
切除豚鼠耳屏后，选取7只健康有色豚鼠（13只耳），测量2f1 - f2频率下的DPOAEs（三次方DPOAEs）。分析f2 = 2、4、6 kHz时的输入/输出函数及潜伏期。
各频率下DPOAEs的引出率均为100%。输入-输出函数的最大幅值分别为（27.24±4.15）dB SPL、（27.98±4.05）dB SPL和（41.45±1.20）dB SPL；相应频率下的潜伏期分别为（2.06±0.21）ms、（1.52±0.16）ms和（1.37±0.08）ms。
经检测方法改进后，DPOAE在动物中的引出率高、幅值高、重复性好，用于动物检测效果满意。
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