目的:探索24小时动态脑电图对癫痫诊断的价值。方法:对225例临床确诊为癫痫的AEEG诊断行回顾性分析。结果:AEEG与EEG的异常率及病样放电检出率均有非常显著性差异(P<0.001)。AEEG描记中睡眠期痫样放电检出比清醒期增加15.6％。且57.8％出现在NREMl-2期。睡眠纺锤波的缺如及减弱,对癫痫患者具有重要的脑电图意义。AEEG可以记录到癫痫发作起始时的波形变化。结论:AEEG对癫痫的诊断及治疗有重要作用。 Objective: To explore the value of 24-hour dynamic EEG in the diagnosis of epilepsy. Methods: A retrospective analysis of 225 cases of AEEG diagnosed clinically as epilepsy. Results: The abnormal rates of AEEG and EEG were significantly different (P <0.001). Epileptiform discharges during sleep episodes in AEEG tracings showed a 15.6% increase over the awake period. And 57.8% appeared in NREMl-2 phase. The absence and weakening of sleep spindles have important EEG implications for patients with epilepsy. The AEEG can record the waveform changes at the beginning of a seizure. Conclusion: AEEG plays an important role in the diagnosis and treatment of epilepsy.