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Change of activation of the supplementary motor area in motor learning: an fMRI case study  

Park, Min-Chull (Department of Physical Therapy, College of Health Sciences, Catholic University of Pusan)
Bae, Sung-Soo (Department of Physical Therapy, College of Rehabilitation Science, Daegu University)
Lee, Mi-Young (Department of Physical Therapy, College of Health & Therapy, Daegu haany University)
Publication Information
The Journal of Korean Physical Therapy / v.23, no.2, 2011 , pp. 85-90 More about this Journal
Abstract
Purpose: The contribution of the supplementary motor area (SMA) to the control of voluntary movement has been revealed. We investigated the changesin the SMA for motor learning of the reaching movement in stroke patient using functional MRI. Methods: The subject was a right-handed 55 year-old woman with left hemiparesis due to an intracerebral hemorrhage. She performed reaching movement during fMRI scanning before and after reaching training in four weeks. The motor assessment scale and surface EMG were used to evaluate the paretic upper limb function and muscle activation. Results: In the fMRI result, contralateral primary sensorimotor cortex (SM1) was activated before and after training. SMA was only activated after training. In addition, muscle activation of the paretic upper limb was similar to that of the unaffected upper limb after training. Conclusion: These findings suggest SMA is related to the execution of a novel movement pattern resulting in motor learning in stroke patients.
Keywords
Functional MRI; Motor learning; Reaching movement; Stroke;
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