内耳神経切断が聴器迷路に及ぼす影響に関する実験的研究
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概要
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The author severed the VIII nerve of dogs within the cranium, and observed the influence upon the ear labyrinth pursuing the course of the clinical symptoms and histological study of inner ear degenerations, and the following conclusions were mode:1) Vestibular symptoms were the most remarkable immediately after the seneranse of the VIIInerve and gradually recovered by the central compensation leaving no sequellae.2) Post-rotatory nystagmus by Bfarfanys method was larger in jerk numbers I can find more big, numbers of nystagmus duration and jerk numbers and longer in duration in the ill side rotation.than the sound side rotation.3) Cochlear neove, of the the sensory nerves, showed peripheral degeneration which is against to the Wallers low.4) Cochlear nerve degeneration started at the point of severance and progressed centrifugally extending from the nerve stamm fibres to the spiral ganglia and still further to the peripheral nonmedulated nerve fibres.5) Vestivular nerve fibers also showed pheripheral degeneration. There the cutting lead to the peripheral degeneration in the vestibular fibre was a tendency of temporary delay of the degeneration at vestibular ganglia.6) There was no relation between the secondary degeneration of the nerve tissue and that of the endorgans of the nerve but a light atrophy of the endorgans was abserved after the long.period.7) The degeneration of the endorgans of the nerve was caused by circulatory disturbance.8) The inner ear disorders start, from the nerve tissue orfrom the endorgans in accordance with the causing factor.
- 社団法人 日本耳鼻咽喉科学会の論文