Magnetic brain stimulation: Central motor conduction studies in multiple sclerosis
Tóm tắt
Central motor conduction (CMC) was evaluated in 32 normal subjects and 83 patients with multiple sclerosis, and the findings were correlated with clinical signs and evoked potential data. CMC time was obtained from the latency difference in responses from the abductor muscle of the little finger to magnetic stimulation of the motor cortex and electrical stimulation at the C‐7/T‐1 interspace. Mean CMC time in normal subjects was 6.2 msec (SD 0.86 msec), and amplitudes of responses to cortical stimuli were at least 18% of those obtained with stimuli at the wrist. CMC was abnormal in 60 patients with multiple sclerosis (72%); this correlated well with brisk finger flexor jerks (
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Tài liệu tham khảo
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