Changes of cortical motor area size during immobilization

被引：262

作者：

Liepert, J ^{[1
]}

Tegenthoff, M ^{[1
]}

Malin, JP ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM,DEPT NEUROL,W-4630 BOCHUM,GERMANY

来源：

ELECTROMYOGRAPHY AND MOTOR CONTROL-ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1995年 / 97卷 / 06期

关键词：

transcranial magnetic stimulation; motor area size; immobilization;

D O I：

10.1016/0924-980X(95)00194-P

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Changes of motor cortex organization after lesions in the nervous system can be demonstrated by mapping the motor cortex with transcranial magnetic stimulation. We studied cortical plasticity in 22 patients who had a unilateral immobilization of the ankle joint without peripheral nerve lesion. The motor cortex area of the inactivated tibial anterior muscle diminished compared to the unaffected leg without changes in spinal excitability or motor threshold. The area reduction was correlated to the duration of immobilization. It could be quickly reversed by voluntary muscle contraction. This indicates a functional (and not morphological) origin of the phenomenon.

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页码：382 / 386

页数：5

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