衰老对镫骨肌反射阈值的影响。

The effects of aging on the stapedius reflex thresholds.

作者信息

Silman S

出版信息

J Acoust Soc Am. 1979 Sep;66(3):735-8. doi: 10.1121/1.383675.

Abstract

The acoustic reflex thresholds for broadband noise and 500-, 1000-, and 2000-Hz activating signals were measured in a group of young normal hearing adults and a group of elderly normal hearing subjects. The results indicated that the acoustic reflex thresholds for tonal activating signals in the young subjects were similar to those in the elderly subjects. However, the acoustic stapedius reflex thresholds for broadband noise activating signals is significantly higher in the elderly subjects than in the young. These differences were explained in light of Bredburg's findings [Acta Otolaryngol. Suppl. 236, 1--135 (1968)] regarding degeneration of outer hair cells as a function of aging.

摘要

在一组年轻的听力正常成年人和一组老年听力正常受试者中，测量了宽带噪声以及500赫兹、1000赫兹和2000赫兹激活信号的声反射阈值。结果表明，年轻受试者中音调激活信号的声反射阈值与老年受试者相似。然而，老年受试者中宽带噪声激活信号的镫骨肌声反射阈值明显高于年轻受试者。根据布雷德伯格的研究结果[《耳鼻咽喉科文献汇编》236卷，1 - 135页(1968年)]，即外毛细胞随年龄增长而退化，对这些差异进行了解释。