Hashiguchi T, Tosaka T
Department of Physiology, Tokyo Medical College, Japan.
Pflugers Arch. 1988 Jun;411(6):701-3. doi: 10.1007/BF00580871.
Membrane properties of preganglionic fibers in the bullfrog lumbar sympathetic ganglion were studied using a conventional intracellular microelectrode technique. Charging or discharging electrotonus of the preganglionic fibers were found to be slow. The slow and fast time constants were around 62 and 15 msec, respectively. An inward-going rectification was activated in the potential range below -80mV. These electrophysiological properties differed from those observed in a principal neuron and suggested a close resemblance between the sympathetic preganglionic fibers and thick myelinated fibers.
利用传统的细胞内微电极技术研究了牛蛙腰交感神经节节前纤维的膜特性。发现节前纤维的充电或放电电紧张是缓慢的。慢时间常数和快时间常数分别约为62毫秒和15毫秒。在低于-80mV的电位范围内激活内向整流。这些电生理特性与在主神经元中观察到的不同，表明交感节前纤维与粗有髓纤维之间有密切的相似性。
