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人的内耳是一个精细的流体动力学的频率分析器，人对声音感受主要取决于耳蜗的功能状态，而耳蜗的损伤一般来讲是不可逆的，所以对感音神经性耳聋做到早期发现提早防治就显得非常重要。耳声发射（ＯＡＥ）被认为是一个理想的客观检测方法。ＴＥＯＡＥ（瞬态诱发性耳声发射）在正常青年人的检出率为１００％。本文就５７耳（５０～６９岁）听力正常者（纯音测听各频率均≤２５ｄＢＨＬ），用短声进行了ＴＥＯＡＥ检测。结果发现：８．４７％的正常耳未记出ＴＥＯＡＥ，其中５０～５９岁年龄组６．９８％未记出ＴＥＯＡＥ；６０～６９岁年龄组１４．２９％未记出ＴＥＯＡＥ。说明受试者纯音测听虽然正常，但其耳蜗已有损伤，且似乎随年龄的增长，损伤的机率增加，其原因一般认为是耳蜗外毛细胞损失和耳蜗功能状态改变有关。提示ＴＥＯＡＥ可以早期预测耳蜗外毛细胞的功能状态，其敏感性优于主观纯音测听，可弥补纯音测听之不足，为早期诊断提供了有利手段。
Human inner ear is a fine hydrodynamic frequency analyzer, the human voice perception depends on the functional status of the cochlea, and cochlear injury is generally irreversible, so early detection of sensorineural deafness early detection Prevention is very important. Otoacoustic emissions (OAE) is considered as an ideal objective detection method. TEOAE (transient induced otoacoustic emissions) detected in normal young people was 100%. In this paper, 57 ears (50 to 69 years old) were normal hearing (pure tone audiometry each frequency ≤ 25dBHL), with a short sound TEOAE test. The results showed that: TEA TEE was not reported in 8.47% of the normal ears, of which 6.98% in the 50-59 age group did not indicate TEOAE; and 14.29% in the 60-69 age group did not record TEOAE. This shows that although the subjects pure tone audiometry normal, but the cochlea has been damaged, and it seems that with age, the increased risk of injury, the reason is generally considered to be the loss of cochlear outer hair cells and cochlear functional status changes. It is suggested that TEOAE can predict the functional state of cochlear outer hair cells early, and its sensitivity is better than that of subjective pure tone audiometry, which can make up for lack of pure tone audiometry and provide a favorable method for early diagnosis.