Taenaka K
Nihon Jibiinkoka Gakkai Kaiho. 1989 Sep;92(9):1399-415. doi: 10.3950/jibiinkoka.92.1399.
In order to examine the influence of infrasound that is becoming topical in society, human beings and guinea pigs were exposed to infrasound. After exposure, the hearing level, vestibular functions and autonomic nervous functions of human beings were examined, and endocochlear potential (EP) and cochlear microphonics (CM) of guinea pigs were examined. Next, after guinea pigs were exposed to intense audible low frequency sound that was born secondarily from infrasound and/or vibration of whole body concerning about air pressure change of infrasound, their EP and CM were examined. The results obtained were as follows: 1) By exposure of infrasound 10-15Ha 130-135dB LSPL for 30min. to human beings, their hearing level, vestibular functions and autonomic nervous functions were not changed. 2) After exposure of infrasound 15Hz 135-140dB LSPL for 24hrs.-72hrs. to guinea pigs, their EP and CM remained normal. 3) After each exposure of audible low frequency sound 90Hz 120dB SPL for 72hrs., 150Hz 110dB SPL for 72hrs. and 200Hz 100dB SPL for 72hrs. to guinea pigs, their EP became abnormal though their CM remained normal. 4) After exposure of 15Hz 500 mu +/- 30 mu vibration for 72hrs. to guinea pigs, both EP and CM remained normal. 5) After exposure of both audible low frequency sound 150Hz 100dB SPL and vibration 15Hz 500 mu +/- 30 mu for 72hrs. to guinea pigs, their EP became abnormal though their CM remained normal.
为研究次声（在社会上逐渐成为热门话题）的影响，将人类和豚鼠暴露于次声环境中。暴露后，检测了人类的听力水平、前庭功能和自主神经功能，以及豚鼠的耳蜗内电位（EP）和耳蜗微音电位（CM）。接下来，在豚鼠暴露于由次声二次产生的强烈可听低频声音和/或与次声气压变化相关的全身振动后，检测它们的EP和CM。得到的结果如下：1）人类暴露于10 - 15Hz、130 - 135dB LSPL的次声30分钟后，其听力水平、前庭功能和自主神经功能未发生变化。2）豚鼠暴露于15Hz、135 - 140dB LSPL的次声24小时 - 72小时后，其EP和CM仍保持正常。3）豚鼠分别暴露于90Hz、120dB SPL的可听低频声音72小时、150Hz、110dB SPL的可听低频声音72小时和200Hz、100dB SPL的可听低频声音72小时后，其CM仍保持正常，但EP变得异常。4）豚鼠暴露于15Hz、500μ±30μ的振动72小时后，EP和CM均保持正常。5）豚鼠暴露于150Hz、100dB SPL的可听低频声音和15Hz、500μ±30μ的振动72小时后，其CM仍保持正常，但EP变得异常。
