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KMID : 0361419930170010026
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Journal of Korean Academy of Rehabilitation Medicine
1993 Volume.17 No. 1 p.26 ~ p.35
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Motor Evoked Potential in Stroke
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Abstract
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Nine normal subjects and fourteen hemiparetic patients were studied using transcranial magnetic stimulation and somatosensory evoked potential.
The stroke location, degree of recovery in terms of muscle power and Modified Barthel Index score, which represent the functional status of a stroke patients, assessed at the time of evoked potential testing within 2 months after stroke onset and
again
on follow-up 2 months later were compared with the evoked potentials elicited.
Motor response was better(p<0.05) than somatosensory response, at predicting an outcome in terms of functional recovery. The central motor conduction times in the examined muscles facilitated by contraction of the contralateral corresponding
muscles
were significantly increased on the involved side. While absence of response and normal response were seen after both cortical and subcortical lesions, delayed central motor conduction time only were seen in cases of subcortical lesions, which
may
be
indicative of subcortical lesions following stroke(p<0.05).
There were no significant relationship between evoked potential response and degree of recovery in muscle power. There were no untoward side effects.
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KEYWORD
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