DESCENDING VOLLEY AFTER ELECTRICAL AND MAGNETIC TRANSCRANIAL STIMULATION IN MAN
DESCENDING VOLLEY AFTER ELECTRICAL AND MAGNETIC TRANSCRANIAL STIMULATION IN MAN
复制标题
DOI：
10.1016/0304-3940(90)90321-y
复制
发表时间：
1990-04-20
影响因子：
2.5
通讯作者：
MANFREDI, M
中科院分区：
文献类型：
--
作者：
BERARDELLI, A;INGHILLERI, M;MANFREDI, M
对3例脊柱手术患者用脊髓电极记录经颅电刺激和经颅磁刺激诱发的下行性齐射波。如前所述，电刺激诱发的下行齐射由短潜伏期的初始波和随后的波组成。在两个主题中，磁刺激诱发的初始波的潜伏期稍长（0.2-0.3 ms），较小的幅度和较高的阈值比电刺激诱发的初始波。在这两个主题磁刺激可能直接激活锥体轴突。在第三个主题的磁刺激诱发的初始波有1.4 ms的潜伏期长，幅度小得多，比电刺激诱发的。在这种情况下，磁刺激可以间接激活锥体轴突。
The descending volley evoked by electrical and magnetic transcranial stimulation was recorded with spinal electrodes in 3 subjects udndergoing spinal surgery. The descending volley evoked by electrical stimulation, as previously described, was composed by a short-latency initial wave followed by later waves. In two subjects magnetic stimulation evoked an initial wave of slightly longer latency (0.2-0.3 ms), smaller amplitude and higher threshold than the initial wave evoked by electrical stimulation. In these two subjects magnetic stimuli probably activated the pyramidal axons directly. In the third subject the initial wave evoked by magnetic stimulation had a latency of 1.4 ms longer and a considerably smaller amplitude than that evoked by electrical stimulation. In this case magnetic stimulation may activate the pyramidal axons indirectly.