Magnetic stimulation over the spinal enlargements.
Magnetic stimulation over the spinal enlargements.
复制标题
对脊柱增大进行磁刺激。
DOI：
--
复制
发表时间：
1989
影响因子：
11
通讯作者：
C. Marsden
中科院分区：
文献类型：
--
作者：
Y. Ugawa;J. Rothwell;B. Day;P. Thompson;C. Marsden
使用直径9厘米的线圈对10名正常志愿者进行颈椎和腰椎膨大的磁刺激。尽管反应的阈值和幅度取决于线圈的位置和其中的电流方向，但潜伏期是恒定的。磁刺激获得的潜伏期与高压电刺激脊神经根获得的潜伏期相容，并始终短于F波技术估计的外周运动传导时间。磁刺激的激活部位与高压电刺激的激活部位非常相似。使用磁刺激器不可能刺激脊髓内的下行运动束。
Magnetic stimulation over the cervical and lumbar spinal enlargements was performed in 10 normal volunteers using a 9 cm diameter coil. Although the threshold and the amplitude of responses depended on the position of the coil and the direction of current flow within it, the latency was constant. The latencies obtained by magnetic stimulation were compatible with those obtained using high voltage electrical stimulation of the spinal nerve roots and always were shorter than the peripheral motor conduction time estimated by F-wave techniques. The site of activation by magnetic stimulation appears to be very similar to that stimulated by the high-voltage electrical method. Stimulation of descending motor tracts within the cord was not possible using the magnetic stimulator.