Norton S J, Widen J E
Department of Hearing and Speech, University of Kansas Medical Center, Kansas City 66103.
Ear Hear. 1990 Apr;11(2):121-7. doi: 10.1097/00003446-199004000-00006.
Evoked otoacoustic emissions (EOAEs) are a promising tool for evaluating cochlear status in children. Preliminary data from normal-hearing subjects ranging from birth to 29.9 years old are discussed. EOAEs are present and robust in infant ears. However, there is a statistically significant decrease in EOAE amplitude for a fixed stimulus level with increasing age even in a carefully screened sample. At the present time it is unclear if these age-associated changes are due to normal developmental changes in the external and/or middle ear acoustics, normal developmental changes in cochlear mechanics and/or everyday cochlear wear and tear. Issues related to further application of evoked emissions to pediatric populations are discussed.
诱发耳声发射（EOAEs）是评估儿童耳蜗状态的一种很有前景的工具。本文讨论了年龄从出生到29.9岁的听力正常受试者的初步数据。EOAEs在婴儿耳中存在且较强。然而，即使在经过仔细筛选的样本中，随着年龄的增长，在固定刺激水平下，EOAE幅度仍有统计学上的显著下降。目前尚不清楚这些与年龄相关的变化是由于外耳和/或中耳声学的正常发育变化、耳蜗力学的正常发育变化和/或耳蜗的日常损耗。本文还讨论了与诱发发射在儿科人群中的进一步应用相关的问题。
