시각적 집중을 동반한 손가락운동이 대뇌피질활성화에 미치는 영향
Modulation of Motor Cortical Excitability Induced by Combined Visual Attention to Guide Finger Movement
조윤희, 박진희, 이재준, 김태현, 정한영,
소속 상세정보
조윤희 ( Jo Yun-Hee )
인하대학교 의과대학 재활의학교실
박진희 ( Park Jin-Hee )
인하대학교 의과대학 재활의학교실
이재준 ( Lee Jae-Jun )
인하대학교 의과대학 재활의학교실
김태현 ( Kim Tae-Hyun )
인하대학교 의과대학 재활의학교실
정한영 ( Jung Han-Young )
인하대학교 의과대학 재활의학교실
KMID : 1202320100030020106
Abstract
Objective: To evaluate the effect of multiple sensory stimulation on cortical excitability by using transcranial magnetic stimulation (TMS).
Method:Thirteen right handed young adults without neurological deficit were enrolled. Cortical excitability was tested by measuring recruitment of motor evoked potentials [recruitment curve (RC)], intracortical inhibition (ICI), and intracortical facilitation (ICF) at the abductor pollicis brevis of the dominant hand in two different conditions: (1) group A: active thumb and index finger pinch movement while observing the congruent finger movement in a screen with 0.2 Hz bell sound for 30 minutes, (2) group B: the same active finger movement in a dark screen with the same bell sound for 30 minutes. All of these procedures were done with a randomized crossover design.
Results:The amplitude of MEP and the slope of all RC (140%,160% of the resting motor threshold) of group A showed increment after visually-guided finger movement and the level of ICI showed decrement after visually guided finger movement (p＜0.05), but there was no change in the level of ICF (p＞0.05) in group A. In group B, the amplitude of MEP and the levels of ICI, ICF showed no significant changes following finger movement with no visual guidance (p＞0.05), but the slope of RC with 140% showed increment (p＜0.05).
Conclusion: These findings suggest that cortical excitability can be enhanced by simple repetitive motor practice. The congruent sensori-motor stimulations lead to corresponding additional effect on cortical excitability, presumably by recruitment of remote motor neurons
키워드
cortical excitability; motor learning; multi-sensory stimulation; transcranial magnetic stimulation; visual attention
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