Rasminsky M, Ricot P J
Brain Res. 1987 May 12;411(1):167-71. doi: 10.1016/0006-8993(87)90695-0.
We have examined conduction properties and distribution of membrane currents in ventral spinal root axons of rats 12-47 days of age. Internodal length of the largest myelinated fibers increases at a steady 17-19 micron/day during this period as internodal conduction time decreases. Despite the rapid remodelling of fiber dimensions during the first few weeks of postnatal life, potassium channels are continually excluded from participation in action potential generation at the axon membrane of most nodes of Ranvier.
我们研究了12至47日龄大鼠腹侧脊髓神经根轴突的传导特性和膜电流分布。在此期间，最大有髓纤维的节间长度以每天17 - 19微米的稳定速度增加，同时节间传导时间减少。尽管在出生后的头几周纤维尺寸迅速重塑，但钾通道在大多数郎飞结的轴突膜上持续被排除在动作电位产生过程之外。
