Effects of repetitive transcranial magnetic stimulation and transcranial direct current stimulation on posterior alpha wave

Dilok Puanhvuan, Kazuhisa Nojima, Yodchanan Wongsawat, Keiji Iramina

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)

抄録

Because of the unclear conclusion of the repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS) effects on the posterior electroencephalogram (EEG) alpha wave, this study is aimed at investigating these unclear effects. Transcranial stimulation effects are observed by analyzing a measured EEG at the occipital area between prestimulation and the poststimulation. The EEG alpha power and alpha coherence are calculated and analyzed in terms of the ratio between eyes closed and eyes open periods. The results reveal that alpha power ratio at the individual alpha frequency (IAF) significantly increases after the 1-Hz rTMS and cathodal tDCS and slightly decreases after the anodal tDCS compared to the control and the sham conditions. The results also show that there is a significant difference between the inhibited and excited conditions. Similarities are observed in the patterns of the alpha coherence ratio and alpha power changes. The alpha coherence increases in the rTMS and cathodal tDCS conditions, and decreases in the anodal tDCS condition but these effects occur only when comparing across the hemispheres (O1-O2 and P3-P4). It can be summarized that the EEG alpha wave can be influenced by the transcranial stimulations. The rTMS and cathodal tDCS seem to facilitate the alpha activity and the anodal tDCS inhibits it.

本文言語英語
ページ(範囲)263-268
ページ数6
ジャーナルIEEJ Transactions on Electrical and Electronic Engineering
8
3
DOI
出版ステータス出版済み - 5月 2013

!!!All Science Journal Classification (ASJC) codes

  • 電子工学および電気工学

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