...Dalloss P. et al., 1982) have generally accepted that sound stimulation produces a direct current depolarization and an alternating current component similar to the sound waveform at low frequencies, but the alternating current component disappears above 1 kHz (guinea pigs). On the other hand, in an experiment by ACCrawford and R. Fettiplace using sea turtles (1981), it was found that each hair cell responds to a specific frequency, which leads to a concept similar to Helmholtz's resonance theory. Such changes in the intracellular potential cause the release of transmitter substances from the synapses at the base of the cells in sync with the movement of the hairs, initiating discharges in the cochlear nerve fibers. ... *Some of the terminology that mentions "Crawford, AC" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ダロスP.Dallossら,1982),音刺激により直流的脱分極と音波形と同じ交流成分が低周波の際には現れ,1kHzを超えると交流成分がみられなくなることがだいたい容認された(モルモットで)。一方,ウミガメを用いたクローフォードA.C.CrawfordとフェティプレースR.Fettiplaceの実験(1981)では,各有毛細胞は固有の周波数の応答を示すというから,この結果からはヘルムホルツの共鳴説に近い考え方が導きだされる。このような細胞内電位の変化により,毛の運動に一致して細胞底部のシナプスから伝達物質の放出が起こり,蝸牛神経繊維に放電が開始される。… ※「Crawford,A.C.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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