• Title/Summary/Keyword: 대칭형 상지 운동기구

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Effects of the Symmetric Upper Extremity Motion Trainer on the Motor Function Recovery after Brain Injury: An fMRI Study (뇌손상 후 운동신경기능 회복에 대한 대칭형 상지 운동기구의 효과: 기능적 뇌 자기공명영상 연구)

  • Tae Ki-Sik;Choi Hue-Seok;Song Sung-Jae;Kim Young-Ho
    • Progress in Medical Physics
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    • v.16 no.1
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    • pp.1-9
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    • 2005
  • The effect of the developed symmetric upper extremity motion trainer on the cortical activation pattern was investigated in three chronic hemiparetic patients using both fMRI and Fugl-Meyer test. The training program was performed at 1 hr/day, 5 days/week during 6 weeks. Fugl-Meyer tests were performed every two weeks during the training. fMRI was performed at 3T scanner with wrist flexion-extension in two different tasks before and after the training program: the only unaffected hand movement (Task 1) and passive movements of affected hand by the active movement of unaffected hand (Task 2). fMRI studies in Task 1 showed that cortical activations decreased in ipsilateral SMC but increased in contralateral SMC. Task 2 showed cortical reorganizations in bilateral SMC, PMA and SMA. Therefore, it seems that the cortical reorganization in chronic hemiparetic patients can be induced by the training with the developed symmetric upper extremity motion trainer.

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Brain Activation During the Wrist Movement Using Symmetrical Upper Limb Motion Trainer (대칭형 상지 운동기구를 이용한 손목 운동 시 뇌 활성도 패턴)

  • 태기식;김사엽;송성재;이소영;박기영;손철호;김영호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.1303-1306
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    • 2004
  • We developed a symmetrical upper limb motion trainer for chronic hemiparetic subjects. This trainer enabled the practice of a forearm pronatio $n^ination and wrist flexion/extension. In this study, we have used functional magnetic resonance imaging(fMRI) with the developed symmetrical upper limb motion device, to compare brain activation patterns elicited by flexion/extension wrist movements of control and hemiparetic subject group. In control group, contralateral somatosensory cortex(SMC) and bilateral cerebellum were activated by dominant hand movement(Task 1), while bilateral movements by dominant hand(Task 2) activated the SMC in both cerebral hemispheres and ipsilateral cerebellum. However, in hemiparetic subject group, contralateral supplymentary motor area(SMA) was activated by unaffected hand movement(Task 1), while the activation of bilateral movements by unaffected hand(Task 2) showed only SMA in the undamaged hemisphere. This study, demonstrating the ability to accurately measure activation in both sensory and motor cortex, is currently being extended to patients in clinical applications such as the recovery of motor function after stroke.ke.

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