視性眼振の生理補遺
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By the method of accelerative optokinetic stimulation, the author have studied on the optokinetic nystagmus reaction recording from ENG in normal human subjects and rabbits. Results obtained are as follows;1. Compared with the ordinary optokinetic stimulation followed by a constant velocity, the optokinetic nystagmus was more manifested and enduring and regular with accelerative optokinetic stimulation.2. Generally, the afternystagmus and nextly-succeeding secondary phase of optokinetic nystagmus have observed after optokinetic stimulation regardless of either constant velocity or acceleration, as the basic phenomen of optokinetic ocular reflex.3. In rabbits, when an accelerative optokinetic stimulation was repeated with in a short intervals, there were some cases of which evoked nystagmus was transformed into the eye movements resembling to socalled "Nystagmus Clonus" or "Firing" becomming to completely independent of original stimuli in regard to frequency of beats.4. The secondary phase of nystagmus does exist not only in vestibular nystagmus, but also in optokinetic one. This phenomenon is the manifestation of basic pattern in nystagmus reaction being in common with each other in the two nystagmus and is organized by primary reflex arc in the brain stem constantly influencing and controlling by the higher optokinetic vestibular tracts such as the cerebellum or the cerebrum.
- 社団法人 日本耳鼻咽喉科学会の論文
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