单词 | action potential |
释义 | > as lemmasaction potential action potential n. Physiology a wave of electrical activity which is propagated through a nerve fibre or other excitable cell by the successive temporary depolarization of adjacent regions of the membrane. ΚΠ 1913 Proc. Royal Soc. B. 86 217 Galeotti added the action potential to his observed potential. 1939 W. B. Yapp Introd. Animal Physiol. 187 The action potential and the conduction rate both vary approximately as the area of cross-section of the fibre. 1983 Sci. Amer. Feb. 38/2 The arrival of the action potential causes a rapid discharge of neurotransmitter from the terminal into the synaptic cleft. 2001 P. Wolfe Brain Matters iv. 52 The action potential spreads down the axon as the sodium channels open sequentially, somewhat like falling dominoes. < as lemmas |
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