Somatosensory evoked potential was measured 20 minutes before and 10,35 minutes and 13 days after spinal cord injury, and less individual difference N2P2 was selected as interpeak amplitude index.

• 于脊髓损伤前20min,损伤后10,35min和第13天测量体感诱发电位,选个体差异较小的N2P2作为实验测定的峰间波幅值;