Modulation of event-related desynchronization during motor imagery with transcranial direct current stimulation in a patient with severe hemiparetic stroke: A case report

Takamichi Tohyama, Toshiyuki Fujiwara, Jun Matsumoto, Kaoru Honaga, Junichi Ushiba, Tetsuya Tsuji, Kimitaka Hase, Meigen Liu

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Recently, surface electroencephalogram (EEG)-based brain-machine interfaces (BMI) have been used for people with disabilities. As a BMI signal source, event-related desynchronization of alpha-band EEG (8-13 Hz) during motor imagery (mu ERD), which is interpreted as desynchronized activities of the activated neurons, is commonly used. However, it is often difficult for patients with severe hemiparesis to produce mu ERD of sufficient strength to activate BMI. Therefore, whether it is possible to modulate mu ERD during motor imagery with anodal transcranial direct-current stimulation (tDCS) was assessed in a severe left hemiparetic stroke patient. EEG was recorded over the primary motor cortex (M1), and mu ERD during finger flexion imagery was measured before and after a 5-day course of tDCS applied to M1. The ERD recorded over the affected M1 increased significantly after tDCS intervention. Anodal tDCS may increase motor cortex excitability and potentiate ERD during motor imagery in patients with severe hemiparetic stroke.

本文言語English
ページ(範囲)114-118
ページ数5
ジャーナルKeio Journal of Medicine
60
4
DOI
出版ステータスPublished - 2011 12

ASJC Scopus subject areas

  • 医学(全般)

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