Effect of transcranial static magnetic stimulation on intracortical excitability in the contralateral primary motor cortex

被引：16

作者：

Shibata, Sumiya ^{[1
]}

Watanabe, Tatsunori ^{[2
]}

Yukawa, Yoshihiro ^{[3
]}

Minakuchi, Masatoshi ^{[3
]}

Shimomura, Ryota ^{[3
]}

Mima, Tatsuya ^{[4
]}

机构：

[1] Ritsumeikan Univ, Kinugasa Res Org, Kita Ku, 56-1 Tojiin, Kyoto, Kyoto 6038577, Japan

[2] Hiroshima Univ, Grad Sch Biomed & Hlth Sci, Dept Sensorimotor Neurosci, Minami Ku, 1-2-3 Kasumi, Hiroshima, Hiroshima 7348553, Japan

[3] Murata Hosp, Dept Rehabil, Ikuno Ku, 4-2-1 Tajima, Osaka, Osaka 5440011, Japan

[4] Ritsumeikan Univ, Grad Sch Core Eth & Frontier Sci, Kita Ku, 56-1 Tojiin,Kitamachi, Kyoto, Kyoto 6038577, Japan

来源：

NEUROSCIENCE LETTERS | 2020年 / 723卷

基金：

日本学术振兴会;

关键词：

Transcranial static magnetic stimulation (tSMS); Interhemispheric interaction; Short-latency intracortical inhibition (SICI); Intracortical facilitation (ICF); SOMATOSENSORY-EVOKED POTENTIALS; INTERHEMISPHERIC INHIBITION; FIELD STIMULATION; CORTICAL AREAS; FACILITATION; HANDEDNESS; ASYMMETRY; THRESHOLD;

D O I：

10.1016/j.neulet.2020.134871

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Transcranial static magnetic stimulation (tSMS) is a new technique of non-invasive brain stimulation using a small, high-powered neodymium magnet placed on the scalp. It can reduce cortical excitability below the magnet. The aim of this study was to investigate the effect of tSMS on the intracortical excitability of the primary motor cortex (M1) contralateral to the M1 where the magnet was placed. Fourteen right-handed healthy subjects participated in this experiment. TSMS was applied over the left M1 for 20 min. Single-pulse and paired-pulse transcranial magnetic stimulation (TMS) was applied over the right M1 to assess corticospinal excitability, shortlatency intracortical inhibition (SICI), and intracortical facilitation (ICF) before and immediately after the intervention. ICF decreased significantly after tSMS, whereas corticospinal excitability and SICI did not change. This study suggests that tSMS applied over the M1 for 20 min has a remote modulatory effect on the interneuronal facilitatory circuit in the contralateral M1. The ability of tSMS to modulate neuronal activities in the remote cortex could expand the possibility of its clinical use.

引用

页数：5

共 35 条

[1] Magnetic stimulation of human premotor or motor cortex produces interhemispheric facilitation through distinct pathways [J].