The development of middle-ear admittance in the hamster.
The development of middle-ear admittance in the hamster.
复制标题
仓鼠中耳导纳的发育。
DOI：
10.1121/1.383066
复制
发表时间：
1979
期刊：
影响因子：
--
通讯作者：
D. F. Konkle
中科院分区：
文献类型：
--
作者：
E. Relkin;J. Saunders;D. F. Konkle
研制了一种高频导纳仪，用于研究新生金仓鼠中耳生理功能的成熟。测量了产后6 ~ 69天的中耳输入频率在0.8 ~ 1.8 kHz范围内的导纳。从第16天开始，在每个测试频率下，导纳大小随年龄稳步增加，逐渐接近渐近值。在测试的频率范围内，导纳增长率没有明显差异。然而，对导纳斜率的分析还有待进一步研究。频率响应曲线显示，25天大或更小的动物的频率响应从4.6 dB/ ocave增加到6.3 dB/ ocave。年轻受试者和年长受试者之间的这种差异表明，金仓鼠中耳的发育比单纯的顺从性增加要复杂得多。
A high-frequency admittance meter was developed and used to study the maturation of physiological function in the middle ear of neonatal golden hamsters (Mesocricetus auratus). The middle-ear input admittance in the frequency range of 0.8-1.8 kHz was measured in animals ranging in age from 6 to 69 days postpartum. Admittance magnitude was found to increase steadily with age, beginning on day 16, to asymptotic values at each test frequency. There were no obvious differences in admittance growth rates within the range of frequencies tested. However, an analysis of the slopes of the admittance ma;nitude frequency response curves revealed an increase from 4.6 dB/octave for animals 25 days old or younger, to 6.3 dB/octave for all older animals. This difference between younger and older subjects indicates that the development of the middle ear in the golden hamster is more complex than a simple increase in pure compliance.