蝸牛反応による聴覚疲労の実験的研究
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Changes of cochlear response (C. R.) in the guinea-pig with the powerful sound stinmli were observed using the automatic ink-writing-levelmeter.(1) In the early stage of the stimulation, the response started to decrease rapidly. The level of the response became constant in about 10 seconds.(2) Transition of potential to test tone after the removal of the stimuli was observed. Rate of the diminution was most remarkable in a moment of removal of stimulating tone, and then the response begin to recover. In the beginning, the recoverry was most rapid, but soon slowed down gradually reaching to the. original level after a period of reconvalescence.(3) When the stimulus was stronger or duration of stimulation was longer, the rate of dimin-ution was larger and recovery period was longer.(4) When the duration of stimulation was prolonged at same rate, effect of this prolongation was more remarkable in the case stimulated with loud tone, than in the case stimulated with weak tone.(5) In a moment of the removal of stimulus, the rate of diminution of response to still tone (testing tone) was more remarkable than response to londer tone (stimulatingtone).(6) These recovery-curves of C. R. was similar to the fatigue recovery-curves of the human-audition.
- 社団法人 日本耳鼻咽喉科学会の論文
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