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目前已有四种脊髓传导功能的体感诱发电位(SEP)检查法:(1)下肢刺激、棘突及头皮记录法。(2)上下肢中枢传导时间差法。(3)F波加SEP法。(4)初、晚期反射反应和SEP法。其中前两种方法更实用,尤其第一种方法操作简便,对下胸、腰骶段病变的诊断有重要意义。第二种方法有助于区分周围和中枢神经病变所致的传导障碍,但不能节段定位。后两种方法除不能节段定位外,假设条件太多,实用价值有限。
So far, there have been four kinds of somatosensory evoked potentials (SEP) tests for spinal conduction: (1) lower extremity stimulation, spinous process, and scalp recording. (2) upper and lower limb center conduction time difference method. (3) F-wave plus SEP method. (4) early and late reflex reaction and SEP method. The first two methods are more practical, especially the first method is simple and convenient, the diagnosis of lower thoracic and lumbosacral lesions is of great significance. The second method helps to distinguish between conduction disorders caused by peripheral and central neuropathy, but not segmental positioning. In addition to the latter two methods can not segment positioning, the assumption that too many conditions, practical value is limited.