采用经皮电刺激大脑皮层及脊髓,于肢体远端肌群记录的运动诱发电位(MEP)技术,对40例正常人进行了中枢运动神经—锥体束的功能测定。并对其机理和影响因素进行了探讨。结果表明,该方法能快速,准确地反映锥体束功能,是目前临床无创性诊断中枢运动神经系统疾病的理想方法。 Peripheral electrical stimulation of the cerebral cortex and spinal cord was used to record the motor evoked potentials (MEP) in the distal limb muscles. The central motor neuron - pyramidal tract was measured in 40 normal subjects. And its mechanism and influencing factors were discussed. The results show that this method can reflect the pyramidal tract function quickly and accurately and is an ideal method for noninvasive clinical diagnosis of central nervous system diseases.