Methods After exposed to infrasound stimula tion with 8Hz,120dB SPL,2h /time,1t ime /d for continued 30days,the morp hological changes of the lower central auditory pathways of guinea pigs were observ ed by optical and electric microscop y.

• 方法豚鼠在接受次声暴露条件为8Hz、120dBSPL、1次/d、2h/次、共30d的暴露后,通过透射电镜等方法,观察豚鼠下位听觉通路结构的细胞组织形态学和超微结构的变化情况。