目的探讨精神运动性癫痫患儿的躯体感觉神经诱发电位(simatosensory evoked potentia,lSSEP)的变化。方法用诱发电位仪对58例正常对照组儿童及58例精神运动性癫痫患儿分别进行测评,观察两组患者的SSEP各波潜伏时间。结果精神运动性癫痫患儿病变侧SSEP各波较正常儿童组同侧在P25、N30、P40、N60潜伏时均较相应的对侧延长,差异有显著性意义(t=2.04、2.04、1.93、2.82,P<0.05)。结论精神运动性癫痫患儿的神经传导速度明显减慢,中枢神经系统功能有明显损害。 Objective To investigate the changes of somatosensory evoked potentia (lSSEP) in children with psychomotor epilepsy. Methods Fifty-eight children with normal control group and 58 children with psychomotor epilepsy were measured by evoked potentials. The latency of SSEP waves in two groups were observed. Results Compared with the normal children, the SSEP waves in the lesioned side of the children with psychomotor epilepsy were longer than the corresponding contralateral sides at the P25, N30, P40 and N60 latency (t = 2.04,2.04,1.93, 2.82, P <0.05). Conclusion The nerve conduction velocity in children with psychomotor epilepsy is obviously slowed down and the function of central nervous system is obviously damaged.