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一、次声对一般生物的作用 人耳听不到的超低频次声(Infrasound),直至1960年以后,由于其对环境发生污染,才逐渐为人们所注意。其中如Evans氏曾报导其声强在100分贝(以2×10~(-4)微巴为基数)以上、频率2至20赫间之次音,可使人发生吞咽及呼吸困难,以及头昏头疼情绪紧张或昏昏欲睡,出汗及振颤等症状;Mixon氏报导,在150分贝左右、20赫以下的强次音,可使人耳产生疼感及压力感;而用更强的次声对动物做试验表明,6至9赫的195分贝以上的次
First, the infrasound on the role of general biological The ear can not hear the infrasound, until after 1960, because of its pollution to the environment, it gradually became people’s attention. Among them Evans has reported that its sound intensity is above 100 decibels (based on 2 × 10 -4 mbt), and the infrasound of frequencies between 2 and 20 Hz can cause swallowing and dyspnea in humans, as well as head Dizziness, headache, emotional tension or drowsiness, sweating and tremor and other symptoms; Mixon reported that in the 150 decibels, 20 Hz or less under the infrasound can make the human ear produce pain and stress; The infrasound of the animals tested showed that 6 to 9 Hz over 195 decibels