EFFECTS OF TRANSCRANIAL MAGNETIC STIMULATION ON IPSILATERAL MUSCLES

被引：240

作者：

WASSERMANN, EM ^{[1
]}

FUHR, P ^{[1
]}

COHEN, LG ^{[1
]}

HALLETT, M ^{[1
]}

机构：

[1] NINCDS,MED NEUROL BRANCH,HUMAN MOTOR CONTROL SECT,HUMAN CORT PHYSIOL UNIT,BETHESDA,MD 20892

来源：

NEUROLOGY | 1991年 / 41卷 / 11期

关键词：

D O I：

10.1212/WNL.41.11.1795

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

We studied the effects of transcranial magnetic stimulation of the motor cortex on ipsilateral upper extremity muscles in six normal men. Stimulation had inhibitory and excitatory effects on the muscles during voluntary activation. Transient inhibition, an ipsilateral silent period (ISP), occurred in all muscles tested, often without any preceding excitatory response. Motor evoked potentials (MEPs) occurred ipsilaterally in the proximal muscles of some subjects. Ipsilateral MEPs and ISPs were delayed relative to the MEPs evoked by the same stimulus in the corresponding contralateral muscles. The excitability of the alpha motoneuron pool, assessed during the period of the ISP by eliciting H-reflexes, showed no change, suggesting that ipsilateral inhibition acts at a level above the alpha motoneuron. Connections from motor cortex to ipsilateral muscles could be via the corpus callosum and contralateral hemisphere or via purely ipsilateral pathways.

引用

页码：1795 / 1799

页数：5

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