Evoked acoustic emissions from the human ear. V. Developmental changes.
Evoked acoustic emissions from the human ear. V. Developmental changes.
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从人耳诱发声发射。
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
C. Elberling
中科院分区：
文献类型：
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作者：
N. Johnsen;J. Parbo;C. Elberling
20名幼儿，其中诱发声发射记录在出生时，在4岁时重新检查。没有儿童表现出感音神经性听力障碍的证据，并且可以记录所有耳朵的可再现发射，其显示正常的耳镜检查和鼓室压测试（n = 9）。新的记录与出生时获得的记录进行了比较，反应的潜伏期和幅度都没有变化。然而，在某些耳朵的频率含量的主要部分的排放是相当低的年龄在4。这一发现的含义进行了简要讨论，鉴于最近的数据耳蜗的发展，从动物研究中获得。
Twenty young children, in whom evoked acoustic emissions were recorded at birth, were re-examined at the age of 4 years. None of the children showed evidence of sensorineural hearing impairment and it was possible to record a reproducible emission in all ears, which displayed normal otoscopy and tympanometry (n = 9). The new recordings were compared with those obtained at birth and the latency and the amplitude of the response both appeared unchanged. However, in some ears the frequency content of the dominant part of the emission was considerably lower at the age of four. The implication of this finding is briefly discussed in view of recent data on cochlear development, obtained from animal research.