大鼠坐骨神经C纤维传导速度的活动依赖性变化。

Activity-dependent variations in conduction velocity of C fibers of rat sciatic nerve.

作者信息

Shin H C, Lee Y L, Kwon H Y, Park H J, Raymond S A

机构信息

Department of Physiology, College of Medicine, Hallym University, Kangwondo, Korea.

出版信息

Neurosci Res. 1994 Jun;19(4):427-31. doi: 10.1016/0168-0102(94)90084-1.

DOI:10.1016/0168-0102(94)90084-1

PMID:8090372

Abstract

Changes in the conduction velocity and subsequent conduction block were characterized following impulse activity in single C fibers of rat sciatic nerves. C fibers which had the same resting conduction velocities often exhibited quite different profiles of the activity-dependent latency change and/or conduction block following impulses. The results imply underlying variation among C fibers in the activity-dependent excitability changes, especially in the build-up and recovery of the hypoexcitable phases.

摘要

在大鼠坐骨神经单根C纤维的冲动活动后，对其传导速度的变化及随后的传导阻滞进行了表征。具有相同静息传导速度的C纤维在冲动后的活动依赖性潜伏期变化和/或传导阻滞方面常常表现出 quite different profiles（相当不同的模式）。结果表明C纤维在活动依赖性兴奋性变化方面存在潜在差异，尤其是在低兴奋性阶段的形成和恢复过程中。