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次声声源散布极广,诸如火山爆发、地震、海洋碎浪、火箭、直升飞机、工业机器、运行中的机动车辆等。凡此次声概非单独存在,常与可听声混杂,是故它对人耳的影响迄未被系统研究,仅有少数观察报告,其结果还相互矛盾。本文旨在从形态学上阐明次声对耳产生的不良影响。作者选用1Hz 170dB,10Hz 150、160、170dB和20Hz 150、160、163dB的间断与持续纯次声分别刺激24只粟鼠,另4只作为对照组。持续声的刺激时间为2分钟,间断声用100个脉冲,其持续时间视所用频率而异。暴露后数小时～2日
Infrasound sources are widely distributed, such as volcanic eruptions, earthquakes, ocean waves, rockets, helicopters, industrial machines, moving motor vehicles and the like. Whereas this sound is not alone, often mixed with audible sound, so its impact on the human ear has not been systematic study, only a few observations, the results are conflicting. The purpose of this article is to elucidate morphologically the adverse effects of infrasound on the ear. The author selected 1Hz 170dB, 10Hz 150,160,170 dB and 20Hz 150,160,163dB intermittent and sustained infrasound were stimulated 24 mice, another 4 as a control group. The duration of the stimulus is 2 minutes for continuous sound and 100 pulses for intermittent sound, the duration of which varies depending on the frequency used. Hours after exposure ~ 2 days