Ugawa Y, Kohara N, Shimpo T, Mannen T
Department of Neurology, School of Medicine, University of Tokyo, Japan.
Eur Neurol. 1990;30(1):14-8. doi: 10.1159/000116617.
The central motor conduction to the relaxed muscles was studied in 30 normal volunteers using magneto-electrical stimulation (MES) of the central motor pathways. The results were compared with those obtained by the percutaneous electrical stimulation technique (PES) described previously. None of the cortical and spinal latencies (Lcor and Lsp, respectively) and the central motor conduction time were different between MES and PES in the upper limb muscles. In some lower limb muscles, however, the Lsps of MES were significantly shorter than those of PES. This was probably because the magnetic stimulation over the lumbar spinal column activated the motor roots at their exit from the spinal canal rather than the level of conus medullaris, at which activation occurs in the electrical stimulation.
利用中枢运动通路的磁电刺激（MES）对30名正常志愿者的松弛肌肉进行中枢运动传导研究。将结果与先前描述的经皮电刺激技术（PES）所得结果进行比较。上肢肌肉的MES和PES在皮质潜伏期（分别为Lcor）、脊髓潜伏期（分别为Lsp）以及中枢运动传导时间方面均无差异。然而，在一些下肢肌肉中，MES的Lsp明显短于PES的Lsp。这可能是因为腰椎柱上的磁刺激激活了运动神经根从椎管穿出的部位，而非电刺激时发生激活的圆锥马尾水平。
