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자료유형
학술저널
저자정보
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대한임상신경생리학회 Annals of Clinical Neurophysiology Annals of Clinical Neurophysiology 제2권 제2호
발행연도
2000.1
수록면
107 - 113 (7page)

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Background & Objectives : Motor evoked potentials(MEPs) to magnetic trans cranial stimulation were performed to evaluate upper moror neuron involvement and relationship to lower motor neuron involvement in motor neuron disease patients. Method : MEPs were obtained in the 17 consecutive patients with motor neuron disease. These patients were divided into three group based on clinical evidence of upper and lower motor neuron involvement, bulbar symptom; amyotrophic lateral sclerosis(ALS), progressive muscular atrophy(PMA), Progressive bulbar palsy(PBP), MEPs were recorded from abductor pollicis brevis and abductor hallucis. Abnormal MEPs were defined by delayed central motor conduction time or absent MEP. Results : MEPs were abnormal in 64%(11/17) of patients; 100%(7/7) in ALS, 64%(4/7) in PMA, 0%(0/3) in PBP respectively. In 68 total recording muscles, 34 muscles had evidence of motor weakness and showed abnormal responses in 59%(20/34). Whereas 34 muscles with normal strength, only 3%(1/34) of muscles showed abnormal responses. Conclusion : MEPs are well correlated with upper motor neuron signs in ALS and may detect masking upper motor neuron signs I PMA. The muscles with lower motor neuron sign(weakness) usually relate with abnormal MEPs reponses.

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