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The afferent and efferent nerve endings of the outer hair cells of the rabbit after acoustic exposure were investigated with electron microscope. After acoustic stimulation the afferent nerve endings of normal range were 57%. And in the other nerve endings, the small vesicles decreased in number and mitochondriae were dilated.After acoustic stimulation the efferent nerve endings of normal range were 64%. And in the other nerve endings, the small vesicles decreased in number and mitochondriae were dilated or distributed in the whole nerve endings. Synaptic vesicles agglomerated at some sites fronting the synaptic cleft. These agglomerations of synaptic vesicles were observed in 67% of the nerve endings in the control group, but in only 26% of the nerve endings after acoustic exposure.
一般社団法人日本耳鼻咽喉科学会の論文