능동 및 수동 운동과 기능적 전기자극에 의한 대뇌 피질의 활성화

The Cortical Activation by Functional Electrical Stimulation, Active and Passive Movement

  • 권용현 (대구대학교 대학원 재활과학과) ;
  • 장성호 (영남대학교 의과대학 재활의학과) ;
  • 한봉수 (연세대학교 보건과학대학 방사선학과) ;
  • 최진호 (강릉영동대학 물리치료과) ;
  • 이미영 (대구대학교 재활과학대학원 물리치료학과) ;
  • 장종성 (대구대학교 재활과학대학원 물리치료학과)
  • Kwon, Yong-Hyun (Dept. of Rehabilitation Science, Graduate School, Daegu University) ;
  • Jang, Sung-Ho (Dept. of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University) ;
  • Han, Bong-Soo (Dept. of Radiation Science, College of Health Science, Yonsei University) ;
  • Choi, Jin-Ho (Dept. of Physical Therapy, Gangneung Yeongdong College) ;
  • Lee, Mi-Young (Dept. of Physical Therapy, Graduate School of Rehabilitation Science, Daegu University) ;
  • Chang, Jong-Sung (Dept. of Physical Therapy, Graduate School of Rehabilitation Science, Daegu University)
  • 투고 : 2005.04.07
  • 심사 : 2005.04.28
  • 발행 : 2005.05.21

초록

We investigated the activation of the cerebral cortex during active movement, passive movement, and functional electrical stimulation (FES), which was provided on wrist extensor muscles. A functional magnetic resonance imaging study was performed on 5 healthy volunteers. Tasks were the extension of right wrist by active movement, passive movement, and FES at the rate of .5 Hz. The regions of interest were measured in primary motor cortex (M1), primary somatosensory cortex (SI), secondary somatosensory cortex (SII), and supplementary motor area (SMA). We found that the contralateral SI and SII were significantly activated by all of three tasks. The additional activation was shown in the areas of ipsilateral S1 (n=2), and contralateral (n=1) or ipsilateral (n=2) SII, and bilateral SMA (n=3) by FES. Ipsilateral M1 (n=1), and contralateral (n=1) or ipsilateral SII (n=1), and contralateral SMA (n=1) were activated by active movement. Also, Contralateral SMA (n=3) was activated by passive movement. The number of activated pixels on SM1 by FES ($12{\pm}4$ pixels) was smaller than that by active movement ($18{\pm}4$ pixels) and nearly the same as that by passive movement ($13{\pm}4$ pixels). Findings reveal that active movement, passive movement, and FES had a direct effect on cerebral cortex. It suggests that above modalities may have the potential to facilitate brain plasticity, if applied with the refined-specific therapeutic intervention for brain-injured patients.

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