对高频噪声所致听力损失的抗性发展

Development of resistance to hearing loss from high frequency noise.

作者信息

Subramaniam M, Campo P, Henderson D

机构信息

Department of Communicative Disorders and Sciences, State University of New York, Buffalo 14214.

出版信息

Hear Res. 1991 Nov;56(1-2):65-8. doi: 10.1016/0378-5955(91)90154-2.

DOI:10.1016/0378-5955(91)90154-2

PMID:1769925

Abstract

The effect of interrupted exposure on the development of progressive resistance to hearing loss from exposure to high frequency noise was studied using monaural chinchillas. The animals were exposed to an octave band noise centered at 4 kHz at 85 dB SPL for 6 h a day for ten consecutive days. Hearing thresholds were measured using evoked potential recording before and after each exposure. Results indicated a reduction in threshold shift with repeated exposures. This reduction in threshold shift or 'toughening' was more rapid for the high frequency exposures than the 'toughening' from similar low frequency exposures.

摘要

使用单耳龙猫研究了间歇性暴露对暴露于高频噪声所致渐进性听力损失发展的影响。动物每天暴露于以4kHz为中心的倍频程带噪声，声压级为85dB SPL，持续6小时，连续十天。每次暴露前后使用诱发电位记录测量听力阈值。结果表明，随着重复暴露，阈值偏移减少。高频暴露时这种阈值偏移的减少或“强化”比类似低频暴露时的“强化”更快。