本文分析了65例失神发作病人的EEG与临床表现;发作时,EEG表现为突然弥漫性两侧同步性高幅棘慢波综合,其频率开始时较快,平均为3.4Hz,中间期为3Hz,终末阶段降为2.7Hz;波幅高达250～600μV,但300～500μV占多数(90.7％),以额中央区为最明显;每次发作持续时间为5—52秒,以10～19秒为最多;波形除了棘慢波综合外,部分病人尚伴有多棘慢、尖慢及单纯δ活动,诱发试验比较中,以过度换气最敏感,绝大多数可诱发出失神发作及EEG特征性改变。 In this paper, we analyzed the EEG and clinical manifestations of 65 cases of absent seizures. During the seizure, EEG showed sudden diffuse bilateral hyperechoic spike-and-wave synthesis. The frequency was faster at the beginning, with an average of 3.4 Hz and an intermediate period of 3 Hz , The final stage dropped to 2.7Hz; amplitude as high as 250 ~ 600μV, but 300 ~ 500μV accounted for the majority (90.7%), the amount of the central area as the most obvious; duration of each attack is 5-52 seconds to 10-19 seconds In addition to spike and slow wave synthesis, some patients are still associated with more spines slow, sharp slow and simple δ activity, induced test comparison, the most sensitive to hyperventilation, the vast majority can lead to missed seizures and EEG features Sexual change.