单选题
发布日期:2021-05-14
锋电位幅度
动作电位时程
锋电位传导速度
动作电位频率
锋电位传导距离
神经冲动(Nerve Impulse),沿着神经纤维传导的兴奋或动作电位。神经纤维在静息状态时,膜外为正,膜内为负,膜内外电位差为-70 毫伏。当神经纤维某部分受刺激而兴奋时,膜外电位降低,膜内电位升高,膜内外电位差减少,称为去极化,去极化继续发展,膜内电位升至+30 毫伏,称为反极化。之后膜内电位迅速回降并逐渐恢复至静息水平,称为复极化。去极化和反极化发生的电位变化是动作电位的上升相;反极化至复极化过程是动作电位的下降相。
编码信息(encoding information)亦称“符号化信息”。认知心理学术语。
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