경두개직류전류자극이 시열반응과제에 대한 운동 수행 능력에 미치는 영향

The Effects of Transcranial Direct Current Stimulation in Motor Performance of Serial Reaction Time Task

  • 김중선 (대구대학교 재활과학대학 물리치료학과) ;
  • 남석현 (대구대학교 대학원 재활과학과) ;
  • 조인술 (대구대학교 대학원 재활과학과)
  • Kim, Chung-Sun (Department of Physical Therapy, College of Rehabilitation, Daegu University) ;
  • Nam, Seok-Hyun (Department of Rehabilitation Science, Graduate School, Daegu University) ;
  • Cho, In-Sul (Department of Rehabilitation Science, Graduate School, Daegu University)
  • 투고 : 2010.05.31
  • 심사 : 2010.09.24
  • 발행 : 2010.10.25

초록

Purpose: The aim of this study is to investigate whether motor cortex excitability by transcranial direct current stimulation (tDCS) over primary motor cortex (M1) affects motor performance of serial reaction task. Methods: Cathodal, anodal and sham tDCS (1 mA) are applied over right M1 of 24 subjects for 30 minutes including 11minutes for task period time. We applied two electrodes at the same position to both an experimental group and a sham-controlled group, and we made 2 groups recognize to be applicated of stimulation. Flexion, extension of wrist and thumb flexion are carried out following colors of arrows on the monitor. Serial reaction time task was applied to confirm the difference of the reaction time between 2 groups. Results: Reaction time is decreased in both tDCS-group and Sham-controlled tDCS group, and the degree of reduction is much greater in the post-test than pre-test. Reduction of reaction time between groupsis statistically significant. Conclusion: We consider that anodal tDCS increased the cortical excitability of the underlying motor cortex and it can be helpful to modulate motor performance. It seems that tDCS is an effective modality to modulate brain function, and it will be great help to mediate strategy for the brain injury patients.

키워드

참고문헌

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