Facilitation of both stretch reflex and corticospinal pathways of the tibialis anterior muscle during standing in humans
Facilitation of both stretch reflex and corticospinal pathways of the tibialis anterior muscle during standing in humans
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DOI：
10.1016/s0304-3940(02)01353-8
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发表时间：
2003-02-20
影响因子：
2.5
通讯作者：
Akai, M
中科院分区：
文献类型：
--
作者：
Nakazawa, K;Kawashima, N;Akai, M
在站立状态下，对经颅磁刺激引起的胫前肌牵张反射（SR）和运动诱发电位（MEP）的兴奋性进行了测试。结果表明，在TA的SR和MEP的值显着更大，而在仰卧位站立时，虽然背景肌电图活动是沉默的两种条件。与以前的报告，这两种途径是促进在TA在人类行走的早期站姿阶段，我们的研究结果表明，一个共同的神经机制的基础上的两个观察，一个可能是功能相关的，以确保踝关节稳定直立。(C)2002爱思唯尔科学爱尔兰有限公司保留所有权利。
Excitability of both stretch reflex (SR) and motor evoked potential (MEP) elicited in the tibialis anterior (TA) muscle by transcranial magnetic stimulation were tested in standing humans. The results demonstrated significantly greater values for both SR and MEP in the TA while standing than while in the supine posture, although background electromyographic activity was silent in the two conditions. Taken together with previous reports that both pathways are facilitated in the TA at the early stance phase of human walking, our findings suggest that a common neural mechanism underlies both observations, one that might be functionally relevant for securing ankle joint stabilization during upright standing. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.