The invention of transcranial direct current stimulation using homeostatic plasticity

2018 Fiscal Year Final Research Report

• Project/Area Number: 17K13073
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Niigata University of Health and Welfare
• Principal Investigator: Miyaguchi Shota 新潟医療福祉大学, リハビリテーション学部, 助教 (60780343)
• Project Period (FY): 2017-04-01 – 2019-03-31
• Keywords: 軽負荷反復運動 / 経頭蓋交流電流刺激 / 運動パフォーマンス / 一次運動野 / 小脳 / 基礎実験 / リハビリテーション / 神経科学

Outline of Final Research Achievements

The purpose of this study was to examine whether or not the intervention effect that enhances the excitability of the primary motor area is enhanced during the excitability reduction period of the primary motor area that occurs after repetitive finger movement. As a result, when the peripheral nerve electrical stimulation to enhance the excitability of the primary motor area was applied after repetitive exercise, the excitability enhancing effect was lost. Next, we examined the optimal stimulation method for transcranial alternating current stimulation. As a result, it was revealed that stimulation to the primary motor area and cerebellum hemisphere (1 mA, 70 Hz, antiphase) improves motor performance. In the future, it is necessary to verify the combined effect with the repetitive exercise task using the stimulation method that was clarified this time.

Free Research Field

理学療法学

Academic Significance and Societal Importance of the Research Achievements

本研究課題では，軽負荷の反復運動と電気刺激法の併用効果や，経頭蓋交流電流刺激による運動パフォーマンスへの効果が明らかになった．これらの研究成果は，一次運動野の可塑的変化および運動パフォーマンスの向上を促す最適な介入方法を明らかにするための基礎的な知見となり得る．