Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations

Abstract Transcranial static magnetic stimulation (tSMS) is a novel non-invasive brain stimulation technique that reduces cortical excitability at the stimulation site. We investigated the effects of tSMS over the left primary motor cortex (M1) for 20 min on the local electroencephalogram (EEG) powe...

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Autores principales:	Sumiya Shibata, Tatsunori Watanabe, Yoshihiro Yukawa, Masatoshi Minakuchi, Ryota Shimomura, Sachimori Ichimura, Hikari Kirimoto, Tatsuya Mima
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/70ed613edccb4cd09b64d915a8282b77
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spelling	oai:doaj.org-article:70ed613edccb4cd09b64d915a8282b772021-12-02T18:03:07ZEffects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations10.1038/s41598-021-87746-22045-2322https://doaj.org/article/70ed613edccb4cd09b64d915a8282b772021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87746-2https://doaj.org/toc/2045-2322Abstract Transcranial static magnetic stimulation (tSMS) is a novel non-invasive brain stimulation technique that reduces cortical excitability at the stimulation site. We investigated the effects of tSMS over the left primary motor cortex (M1) for 20 min on the local electroencephalogram (EEG) power spectrum and interregional EEG coupling. Twelve right-handed healthy subjects participated in this crossover, double-blind, sham-controlled study. Resting-state EEG data were recorded for 3 min before the intervention and 17 min after the beginning of the intervention. The power spectrum at the left central electrode (C3) and the weighted phase lag index (wPLI) between C3 and the other electrodes was calculated for theta (4–8 Hz), alpha (8–12 Hz), and beta (12–30 Hz) frequencies. The tSMS significantly increased theta power at C3 and the functional coupling in the theta band between C3 and the parietal midline electrodes. The tSMS over the left M1 for 20 min exhibited modulatory effects on local cortical activity and interregional functional coupling in the theta band. The neural oscillations in the theta band may have an important role in the neurophysiological effects induced by tSMS over the frontal cortex.Sumiya ShibataTatsunori WatanabeYoshihiro YukawaMasatoshi MinakuchiRyota ShimomuraSachimori IchimuraHikari KirimotoTatsuya MimaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sumiya Shibata Tatsunori Watanabe Yoshihiro Yukawa Masatoshi Minakuchi Ryota Shimomura Sachimori Ichimura Hikari Kirimoto Tatsuya Mima Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
description	Abstract Transcranial static magnetic stimulation (tSMS) is a novel non-invasive brain stimulation technique that reduces cortical excitability at the stimulation site. We investigated the effects of tSMS over the left primary motor cortex (M1) for 20 min on the local electroencephalogram (EEG) power spectrum and interregional EEG coupling. Twelve right-handed healthy subjects participated in this crossover, double-blind, sham-controlled study. Resting-state EEG data were recorded for 3 min before the intervention and 17 min after the beginning of the intervention. The power spectrum at the left central electrode (C3) and the weighted phase lag index (wPLI) between C3 and the other electrodes was calculated for theta (4–8 Hz), alpha (8–12 Hz), and beta (12–30 Hz) frequencies. The tSMS significantly increased theta power at C3 and the functional coupling in the theta band between C3 and the parietal midline electrodes. The tSMS over the left M1 for 20 min exhibited modulatory effects on local cortical activity and interregional functional coupling in the theta band. The neural oscillations in the theta band may have an important role in the neurophysiological effects induced by tSMS over the frontal cortex.
format	article
author	Sumiya Shibata Tatsunori Watanabe Yoshihiro Yukawa Masatoshi Minakuchi Ryota Shimomura Sachimori Ichimura Hikari Kirimoto Tatsuya Mima
author_facet	Sumiya Shibata Tatsunori Watanabe Yoshihiro Yukawa Masatoshi Minakuchi Ryota Shimomura Sachimori Ichimura Hikari Kirimoto Tatsuya Mima
author_sort	Sumiya Shibata
title	Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
title_short	Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
title_full	Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
title_fullStr	Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
title_full_unstemmed	Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
title_sort	effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/70ed613edccb4cd09b64d915a8282b77
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Effects of transcranial static magnetic stimulation over the primary motor cortex on local and network spontaneous electroencephalogram oscillations

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