…In special cases (such as electric fish and goldfish Meissner cells), a synapse called an electrical synapse is formed in which the action current of the presynaptic fiber flows through the postsynaptic membrane, causing a change in potential. In a chemical synapse, it takes time because it involves complex processes such as the release and diffusion of transmitter substances, binding with receptors, and structural changes in the postsynaptic membrane, and there is a time delay of about 0.5 milliseconds, called the synaptic delay. In addition, the direction of transmission is unidirectional. … *Some explanations of terms that mention "synaptic delay" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…特殊な場合(電気魚やキンギョのマイスネル細胞など)では,シナプス前繊維の活動電流がシナプス後膜を流れて電位変化をひき起こす電気シナプスelectrical synapseとよばれるシナプスを形成する。 化学シナプスでは,伝達物質の放出やその拡散,受容体との結合,シナプス後膜の構造変化などの複雑な過程を含むので時間がかかり,シナプス遅延synaptic delayとよばれ,0.5ミリ秒程度の時間遅れが生ずる。また,伝達方向は一方向性である。… ※「synaptic delay」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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