许多动物实验材料证明,第八脑神经的耳蜗支,当其末梢器官或轴突有病变时,很容易发生退行性改变。近来Ylikoski et al(1978)报告,手术损伤引起耳聋的病人,后来作耳蜗神经活检时,见大部分耳蜗神经的有鞘神经纤维是正常或接近正常。因之,动物实验材料似乎不能直接搬用于人类。作者们收集了5例颞骨标本,其中3 Many animal experimental materials show that the cochlear branch of the eighth cranial nerve is prone to degenerative changes when its distal organs or axons are diseased. Recently, Ylikoski et al. (1978) reported that patients with deafness due to surgical injury later developed cochlear nerve fibers with normal or near-normal sclerosis fibers when they were cochlear nerve biopsies. Therefore, it seems that animal experimental materials can not be directly applied to humans. The authors collected 5 cases of temporal bone specimens, of which 3