...This is a synapse called a chemical synapse, and many of the synapses found in the central nervous system are chemical synapses. In special cases (such as electric fish and goldfish Meissner cells), the action current of the presynaptic fiber flows through the postsynaptic membrane, causing a change in potential, forming a synapse called an electrical synapse. Chemical synapses involve complex processes such as the release and diffusion of transmitters, binding to receptors, and structural changes in the postsynaptic membrane, so they take time, and there is a time delay of about 0.5 milliseconds, called the synaptic delay. ... *Some of the terminology explanations that mention "electrical synapse" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これが化学シナプスchemical synapseとよばれるシナプスで,中枢神経系にみられるシナプスの多くはこの化学シナプスである。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。… ※「electrical synapse」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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