诱发电位(EPs)用于研究格林-巴利综合征(GBS),并能在周围神经传导研究和F波不明显时检测传导阻滞。脑干听觉诱发电位(BAEPs)早期波型频率异常提示第8对脑神经远端脱髓鞘。本文30例,均处于急性期,其中男性18例、女性12例,平均年龄43±17岁,除3例Fisher综合征外其余均符合于典型急性GBS的临床表现(眼肌麻痹或咽喉肌麻痹,肢体运动失调及肌张力降低),多数病人不能行走,EPs在疾病第一周至第四周之间完成检查。其结果如下:21例正中神经体感诱发电位中有10名出现异常,12名腓总或胫神经体感诱发电位中有9例异常。7名体感诱发电位正常的患者在 Evoked potentials (EPs) are used to study Guillain-Barre syndrome (GBS) and can be used to detect conduction block in peripheral nerve conduction studies and in the absence of F-waves. Abnormalities in early wave frequencies of brainstem auditory evoked potentials (BAEPs) suggest that the 8th distal nerve of the brain demyelinated. All 30 cases were in acute phase, including 18 males and 12 females, with an average age of 43 ± 17 years. All except 3 Fisher syndrome were consistent with the clinical manifestations of typical acute GBS (ophthalmoplegia or laryngopharyngeal paralysis , Limb maladjustment, and reduced muscle tone), most patients can not walk and EPs are examined between the first and fourth week of the disease. The results were as follows: 10 of 21 cases of median nerve somatosensory evoked potentials were abnormal, and 9 of 9 of 12 total body or tibial nerve somatosensory evoked potentials were abnormal. Seven patients with somatosensory evoked potentials were present