青蛙肌肉中的电荷移动与膜电容
Charge movement and membrane capacity in frog muscle.
作者信息
Adrian R H, Peres A
出版信息
J Physiol. 1979 Apr;289:83-97. doi: 10.1113/jphysiol.1979.sp012726.
Abstract
- The transient current required to impose a step charge of potential has a complex time course especially in the region of internal potential between -50 and -40 mV. 2. Examination of non-linear transient current in this voltage range suggests two components of charge movement: (a) an initial more-or-less exponential movement, and (b) a slower component with a complex time course. 3. Measurements of membrane capacity support such a division and confirm the steeper voltage dependence of the slower charge movement. 4. Permanent depolarization to 40 mV appears to immobilize the slowly moving charge. Depolarization to -20 mV immobilizes both charge movements, and uncovers the presence of a third charge which seems to correspond to Charge 2 (cf. Adrian & Almers, 1976b; Adrian, Chandler & Rakowski, 1976).
摘要
- 施加电位阶跃电荷所需的瞬态电流具有复杂的时间进程，尤其是在内电位在-50至-40 mV之间的区域。2. 对该电压范围内非线性瞬态电流的检查表明电荷移动有两个组成部分：(a) 初始大致呈指数形式的移动，以及 (b) 具有复杂时间进程的较慢组成部分。3. 膜电容的测量支持这种划分，并证实了较慢电荷移动对电压的依赖性更强。4. 永久去极化至40 mV似乎使缓慢移动的电荷固定。去极化至-20 mV使两种电荷移动都固定，并揭示出第三种电荷的存在，它似乎与电荷2相对应（参见Adrian和Almers，1976b；Adrian、Chandler和Rakowski，1976）。
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Charge movement and mechanical repriming in skeletal muscle.骨骼肌中的电荷移动与机械再激发
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Charge movement in the membrane of striated muscle.横纹肌细胞膜中的电荷移动。
J Physiol. 1976 Jan;254(2):339-60. doi: 10.1113/jphysiol.1976.sp011235.
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The voltage dependence of membrane capacity.膜电容的电压依赖性。
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