与同侧手部运动相关的猴锥体束神经元的逆向传导潜伏期。

Antidromic latency of the monkey pyramidal tract neuron related to ipsilateral hand movements.

作者信息

Matsunami K, Hamada I

出版信息

Neurosci Lett. 1980 Mar;16(3):245-9. doi: 10.1016/0304-3940(80)90005-1.

Abstract

During three different motor tasks of finger, wrist and arm movements on either side, 80 pyramidal tract neuron (PTN) activities were recorded in the monkey motor cortex. They were divided into three groups; PTNs related to contralateral movement (contra-PTNs), those related to ipsilateral and contralateral movement (bilateral-PTNs) and those related to ipsilateral movement (ipsi-PTNs). The latency histogram of the antidromic activation was similar for contra-PTNs as well as ipsi- and bilateral-PTNs in the fast PTN group, but most of slow PTNs appeared among contra-PTNs. Intracortical microstimulation (ICMS) was delivered to correlate muscular contraction with PTN activity. Most of slow PTNs were related to proximal muscular contraction and PTNs related to proximal muscles appeared more in ipsi- and bilateral-PTNs than in contra-PTNs.

摘要

在猴子两侧进行手指、手腕和手臂运动的三种不同运动任务期间，在猴子运动皮层记录了80个锥体束神经元（PTN）的活动。它们被分为三组：与对侧运动相关的PTN（对侧PTN）、与同侧和对侧运动相关的PTN（双侧PTN）以及与同侧运动相关的PTN（同侧PTN）。快速PTN组中，对侧PTN以及同侧和双侧PTN的逆向激活潜伏期直方图相似，但大多数慢速PTN出现在对侧PTN中。进行皮层内微刺激（ICMS）以将肌肉收缩与PTN活动相关联。大多数慢速PTN与近端肌肉收缩相关，并且与近端肌肉相关的PTN在同侧和双侧PTN中比在对侧PTN中出现得更多。