Clapham D E, De Felice L J
Pflugers Arch. 1976 Nov 5;366(2-3):273-6. doi: 10.1007/BF00585890.
The small signal impedance of the frog node is calculated for frequencies from 1 Hz to 10,000 Hz and transmembrane potentials from -80 mV to -30 mV, by linearizing the voltage clamp equations of Dodge [7] and Hille [8]. The modulus of the impedance is presented for the total system, and separately for the potassium and sodium systems as a function of frequency and voltage. There is a broad resonance in the total impedance with a voltage-dependent peak frequency. At 22 degrees C, in the range -75 mV to -45 mV, the peak frequencies occur between 50 and 500 Hz. Removing the potassium system leaves a relatively sharp resonance centered around 200 Hz at -45 mV.
通过对道奇[7]和希勒[8]的电压钳方程进行线性化处理，计算青蛙节点在1赫兹至10000赫兹频率以及-80毫伏至-30毫伏跨膜电位下的小信号阻抗。给出了整个系统阻抗的模，并分别给出了钾离子和钠离子系统阻抗的模随频率和电压的变化情况。总阻抗存在一个宽共振，其峰值频率与电压有关。在22摄氏度时，在-75毫伏至-45毫伏范围内，峰值频率出现在50至500赫兹之间。去除钾离子系统后，在-45毫伏时会留下一个以200赫兹为中心的相对尖锐的共振。
