工业噪声环境下人类镫骨肌声反射的疲劳与恢复

Fatigue and recovery of the human acoustic stapedius reflex in industrial noise.

作者信息

Borg E, Nilsson R, Lidén G

出版信息

J Acoust Soc Am. 1979 Mar;65(3):846-8. doi: 10.1121/1.382509.

Abstract

The fatiguability of the acoustic stapedius muscle reflex in an actual noisy industrial environment was investigated in normal-hearing subjects. In a laboratory situation a small depression was found with a considerable individual variability. The stapedius reflex recovered slowly, approximately as a linear function of time. In a field study on an entire day of exposure in a ship-building yard the reflex depression was on the average 4 dB in response to a stimulation of 2000 Hz 10 min after the end of the workday. This corresponds to less than 8 dB immediately at the end of the exposure.

摘要

在听力正常的受试者中，研究了实际嘈杂工业环境中镫骨肌声反射的易疲劳性。在实验室环境中发现有轻微下降，且个体差异较大。镫骨肌反射恢复缓慢，大致呈时间的线性函数。在一项针对造船厂一整天暴露情况的实地研究中，工作日结束10分钟后，对2000Hz刺激的反射下降平均为4dB。这相当于暴露结束时立即下降不到8dB。