本文对30例经多聚酶链反应(PCR)扩增证实脑脊液中含有单纯疱疹Ⅰ型病毒的单纯疱疹病毒性脑炎进行了脑电图(EEG)、事件相关电位(P_(300))、CT、MRI检查,结果示:EEG异常率为93.3%,多表现为弥漫性异常和双额部异常,以非正弦形δ和θ波为主,周期性高波幅尖波的出现率为50%。16例被记录P_(300)的患者中,5例P_(300)消失、6例P_(300)潜伏期延长、5例正常。EEG、P_(300)的异常与CT、MRI的病灶部位较为一致。 In this paper, 30 cases of herpes simplex virus encephalitis confirmed by polymerase chain reaction (PCR) amplification in cerebrospinal fluid were analyzed by EEG, event-related potentials (P 300), CT, The results of MRI showed that the abnormal rate of EEG was 93.3%. Mostly showed diffuse abnormalities and double forehead anomalies. The main results were non-sinusoidal δ and θ waves, and the incidence of periodic high-amplitude sharp waves was 50%. Among 16 patients with P_ (300), 5 patients had no P_ (300), 6 patients had P_ (300) latency prolonged and 5 patients were normal. EEG, P_ (300) abnormalities and CT, MRI lesions are more consistent site.