SUPPRESSION OF MOTOR CORTICAL EXCITABILITY BY MAGNETIC STIMULATION OF THE CEREBELLUM

被引：15

作者：

SAITO, Y ^{[1
]}

YOKOTA, T ^{[1
]}

YUASA, T ^{[1
]}

机构：

[1] TOKYO MED & DENT UNIV,DEPT NEUROL,BUNKYO KU,TOKYO 113,JAPAN

来源：

BRAIN RESEARCH | 1995年 / 694卷 / 1-2期

关键词：

MAGNETIC STIMULATION; CEREBELLUM; MOTOR CORTICAL EXCITABILITY; CORTICOSPINAL NEURON; DENTATO-THALAMO-CORTICAL PATHWAY; DENTATE NUCLEUS; SUPERIOR CEREBELLAR PEDUNCLE;

D O I：

10.1016/0006-8993(95)00740-H

中图分类号：

Q189 [神经科学];

学科分类号：

071006 [神经生物学];

摘要：

EMG responses of the relaxed right thenar muscle evoked by magnetic stimulation over the sensorimotor cortex were suppressed by magnetic conditioning stimulation over the occiput. The optimal interstimulus interval for reduction of the EMG amplitude was 4-6 ms. The optimal conditioning position and induced current direction were 3-4 cm below the inion when the induced current in the center of the figure-8 coil flowed from right to left horizontally. It differed from that for activating the descending motor pathway. We consider this suppression to be due to the inhibition of motor cortex excitability caused by stimulation of the dentato-thalamo-cortical pathway at the dentate nuclei or superior cerebellar peduncle.

引用

页码：200 / 206

页数：7

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