摘要
本文利用氢清除法观察了噪声对豚鼠耳蜗血流的影响。暴露丁■KHz115dB或124.5dBSPL 噪声中30分钟后,耳蜗血流显著降低,切断同侧颈交感神经后,声暴露虽也引起耳蜗血流一定程度的下降,但与对照组相比无显著差别。结果提示耳蜗血流下降可能是声损伤的原因之一,噪声可能通过交感神经系统引起耳蜗血流的减少。
Effects of noise on cochiear blood flow in guinea pig were observed withhydrogen clearance method.After exposure to 1KHz 115dB or 124.5dB SPLpure tone,cochlear blood flow decreased significantly.While after ipsilateralupper cervical sympathectomy,decreased cochlear blood flow induced bynoise,though still exist to a certain degree,but is not significantly differentfrom the control.This result suggested that the reduction of cochlear bloodflow may be one of the possible causes of acoustic trauma,and noise maycause cochlear blood flow decrease through sympathetic nerve.
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
1992年第2期97-100,共4页
Chinese Journal of Industrial Hygiene and Occupational Diseases
关键词
噪声
耳蜗血流
Cochlear blood flow
Guinea pig
Noise
Hydrogen clearance method
