Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals

Background: Simultaneously modulating individual neural oscillation and cortical excitability may be important for enhancing communication between the primary motor cortex and spinal motor neurons, which plays a key role in motor control. However, it is unknown whether individualized beta-band oscil...

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Autores principales:	Daisuke Kudo, Tadaki Koseki, Natsuki Katagiri, Kaito Yoshida, Keita Takano, Masafumi Jin, Mitsuhiro Nito, Shigeo Tanabe, Tomofumi Yamaguchi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Noninvasive brain stimulation Cortical plasticity Spike-timing-dependent plasticity Depolarization Endogenous neural oscillation Leg motor area Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
Acceso en línea:	https://doaj.org/article/2455775e07f14a199e5b5a2b9fedcd18
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spelling	oai:doaj.org-article:2455775e07f14a199e5b5a2b9fedcd182021-11-10T04:22:33ZIndividualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals1935-861X10.1016/j.brs.2021.11.004https://doaj.org/article/2455775e07f14a199e5b5a2b9fedcd182022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1935861X21008020https://doaj.org/toc/1935-861XBackground: Simultaneously modulating individual neural oscillation and cortical excitability may be important for enhancing communication between the primary motor cortex and spinal motor neurons, which plays a key role in motor control. However, it is unknown whether individualized beta-band oscillatory transcranial direct current stimulation (otDCS) enhances corticospinal oscillation and excitability. Objective: This study investigated the effects of individualized beta-band otDCS on corticomuscular coherence (CMC) and corticospinal excitability in healthy individuals. Methods: In total, 29 healthy volunteers participated in separate experiments. They received the following stimuli for 10 min on different days: 1) 2-mA otDCS with individualized beta-band frequencies, 2) 2-mA transcranial alternating current stimulation (tACS) with individualized beta-band frequencies, and 3) 2-mA transcranial direct current stimulation (tDCS). The changes in CMC between the vertex and tibialis anterior (TA) muscle and TA muscle motor-evoked potentials (MEPs) were assessed before and after (immediately, 10 min, and 20 min after) stimulation on different days. Additionally, 20-Hz otDCS for 10 min was applied to investigate the effects of a fixed beta-band frequency on CMC. Results: otDCS significantly increased CMC and MEPs immediately after stimulation, whereas tACS and tDCS had no effects. There was a significant negative correlation between normalized CMC changes in response to 20-Hz otDCS and the numerical difference between the 20-Hz and individualized CMC peak frequency before the stimulation. Conclusions: These findings suggest that simultaneous modulation of neural oscillation and cortical excitability is critical for enhancing corticospinal communication. Individualized otDCS holds potential as a useful method in the field of neurorehabilitation.Daisuke KudoTadaki KosekiNatsuki KatagiriKaito YoshidaKeita TakanoMasafumi JinMitsuhiro NitoShigeo TanabeTomofumi YamaguchiElsevierarticleNoninvasive brain stimulationCortical plasticitySpike-timing-dependent plasticityDepolarizationEndogenous neural oscillationLeg motor areaNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571ENBrain Stimulation, Vol 15, Iss 1, Pp 46-52 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Noninvasive brain stimulation Cortical plasticity Spike-timing-dependent plasticity Depolarization Endogenous neural oscillation Leg motor area Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
spellingShingle	Noninvasive brain stimulation Cortical plasticity Spike-timing-dependent plasticity Depolarization Endogenous neural oscillation Leg motor area Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Daisuke Kudo Tadaki Koseki Natsuki Katagiri Kaito Yoshida Keita Takano Masafumi Jin Mitsuhiro Nito Shigeo Tanabe Tomofumi Yamaguchi Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
description	Background: Simultaneously modulating individual neural oscillation and cortical excitability may be important for enhancing communication between the primary motor cortex and spinal motor neurons, which plays a key role in motor control. However, it is unknown whether individualized beta-band oscillatory transcranial direct current stimulation (otDCS) enhances corticospinal oscillation and excitability. Objective: This study investigated the effects of individualized beta-band otDCS on corticomuscular coherence (CMC) and corticospinal excitability in healthy individuals. Methods: In total, 29 healthy volunteers participated in separate experiments. They received the following stimuli for 10 min on different days: 1) 2-mA otDCS with individualized beta-band frequencies, 2) 2-mA transcranial alternating current stimulation (tACS) with individualized beta-band frequencies, and 3) 2-mA transcranial direct current stimulation (tDCS). The changes in CMC between the vertex and tibialis anterior (TA) muscle and TA muscle motor-evoked potentials (MEPs) were assessed before and after (immediately, 10 min, and 20 min after) stimulation on different days. Additionally, 20-Hz otDCS for 10 min was applied to investigate the effects of a fixed beta-band frequency on CMC. Results: otDCS significantly increased CMC and MEPs immediately after stimulation, whereas tACS and tDCS had no effects. There was a significant negative correlation between normalized CMC changes in response to 20-Hz otDCS and the numerical difference between the 20-Hz and individualized CMC peak frequency before the stimulation. Conclusions: These findings suggest that simultaneous modulation of neural oscillation and cortical excitability is critical for enhancing corticospinal communication. Individualized otDCS holds potential as a useful method in the field of neurorehabilitation.
format	article
author	Daisuke Kudo Tadaki Koseki Natsuki Katagiri Kaito Yoshida Keita Takano Masafumi Jin Mitsuhiro Nito Shigeo Tanabe Tomofumi Yamaguchi
author_facet	Daisuke Kudo Tadaki Koseki Natsuki Katagiri Kaito Yoshida Keita Takano Masafumi Jin Mitsuhiro Nito Shigeo Tanabe Tomofumi Yamaguchi
author_sort	Daisuke Kudo
title	Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
title_short	Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
title_full	Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
title_fullStr	Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
title_full_unstemmed	Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
title_sort	individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/2455775e07f14a199e5b5a2b9fedcd18
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Individualized beta-band oscillatory transcranial direct current stimulation over the primary motor cortex enhances corticomuscular coherence and corticospinal excitability in healthy individuals

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