コイ・ニジマスの左右嗅覚器刺激による嗅球誘起脳波の周波数分析について

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  • コイ ニジマス ノ サユウ キュウカクキ シゲキ ニ ヨル キュウキュウ ユウ
  • Frequency Analysis of the Olfactory Responses to Bilateral Stimulation in Carp and Rainbow Trout

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Induced wave in the olfactory bulb of carp and rainbow trout has been used as a convenient index of the olfactory responses. Most of studies have been carried out on stimulation of the unilateral olfactory organs. In present study, influence of the bilateral nasal sac stimulation upon the induced wave was examined to clarify the function of the bilateral olfactory organs. The induced wave recorded from unilateral organ when NaCl solution with various concentration was infused into the bilateral nasal sac. The induced wave was analyzed as several frequency spectra. As results, although the olfactory responses in carp were different from those in rainbow trout, olfactory responses of both of carp and rainbow trout suggested the centrifugal influence from the olfactory organs of one side to the other side. It seems to be considered that this centrifugal influence subserves to detect the difference between concentration of solution infused into the right and left side nalis.

長崎大学水産学部研究報告, v.66, pp.11-20; 1989

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