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本文应用高电压、低输出阻抗刺激器，经皮给予人大脑皮层和脊髓电刺激，同时在上肢鱼际和下肢胫骨前肌记录诱发肌肉动作电位，并测定其刺激大脑皮层所诱发反应的潜伏期－皮层潜伏期、刺激脊髓所诱发反应的潜伏期－脊髓潜伏期。结果表明：皮层潜伏期（Ｌｃｏｒ．）和脊髓潜伏期（Ｌｓｐ．）与身高呈正相关，相关系数是：鱼际：ｒＬｃｏｒ．＝０．２０８，ｐ＜０．０５（ｖ＝１１４），ｒＬｓｐ．＝０．３６４，ｐ＜０．０１（ｖ＝１１４）；胫骨前肌：ｒＬｃｏｒ．＝０．３４９，ｐ＜０．０１（ｖ＝６９），ｒＬｓｐ．＝０．３１７，ｐ＜０．０１，（ｖ＝６９）。回归方程是：鱼际：Ｌｃｏｒ．（ｍｓ）＝１２．１４８＋０．０４６Ｈ（ｃｍ），Ｌｓｐ．（ｍｓ）＝２．０８５＋０．０６５Ｈ（ｃｍ）；胫骨前肌：Ｌｃｏｒ．（ｍｓ）＝１３．０３８＋０．０９７Ｈ（ｃｍ），Ｌｓｐ．（ｍｓ）＝３．３９７＋０．０７８Ｈ（ｃｍ）。这样在临床工作中，只要测量出身高，就可以确定其各肌肉的皮层潜伏期、脊髓潜伏期的正常值，它将给临床工作带来方便，同时它也将给临床中枢神经疾病的诊断和预后判定提供方便。
In this paper, high voltage, low output impedance stimulator was used to percutaneously stimulate the cerebral cortex and spinal cord, meanwhile the muscle action potentials were recorded in the upper tibial and lower tibialis anterior muscles, and the incubation period of the response induced by the stimulation of cerebral cortex - Cortical latency to stimulate the spinal cord induced response latency - Spinal cord latency. The results showed that the correlation between Lcor. And Lsp. Was positively correlated with height. The correlation coefficient was: rLcor. = 0.208, p <0.05 (v = 114), rLsp. = 0.364, p <0.01 (v = 114); tibialis anterior muscle: rLcor. = 0.349, p <0.01 (v = 69), rLsp. = 0.317, p <0.01, (v = 69). The regression equation is: Iboro: Lcor. (Ms) = 12.148 + 0.046H (cm), Lsp. (Ms) = 2.085 + 0.065H (cm); tibialis anterior muscle: Lcor. (Ms) = 13.038 + 0.097H (cm), Lsp. (Ms) = 3.397 + 0.078H (cm). So in clinical work, as long as the measured height, you can determine the cortical latency of each muscle, the normal latency of the spinal cord, it will bring clinical convenience, but it will also give clinical diagnosis of CNS disease and prognosis to offer comfort.