Freygang W H, Trautwein W
J Gen Physiol. 1970 Apr;55(4):524-47. doi: 10.1085/jgp.55.4.524.
An attempt has been made to decide upon the most reasonable equivalent circuit that will describe the passive linear properties of the Purkinje strands of sheep heart muscle. In order to do this, measurements were made of the phase angle of the characteristic admittance as well as the longitudinal impedance, both as functions of frequency. The results of both types of experiments indicate the presence of a longitudinally oriented capacity with a time constant of about 60-70 microsec. It is suspected that this capacity and time constant represent the connection between the cells, both radially and longitudinally. The plasma membrane contains another capacity with a time constant of about 15 msec.
人们已尝试确定最合理的等效电路，以描述绵羊心肌浦肯野纤维束的无源线性特性。为此，对特征导纳的相角以及纵向阻抗进行了测量，二者均作为频率的函数。这两类实验的结果均表明存在纵向取向的电容，其时间常数约为60 - 70微秒。据推测，该电容和时间常数代表了细胞在径向和纵向的连接。质膜还包含另一个时间常数约为15毫秒的电容。
