本文报道45例常规描记示正常脑电图的精神异常患儿,加作蝶骨电极后15例显示异常,其中12例为蝶骨电极带过度换气所诱发,除1例表现δ节律背景外,均表现癫痫放电。分布区域以颞区为主,各区可见。蝶骨电极带过度换气阳性率提高33.3%,尤对精神异常型癫痫检出率高。作者认为,脑电图对精神异常原因的判断可提供有益的资料,小儿蝶骨电极的开展为一安全有效的方法。 This article reports 45 cases of children with normal mental abnormalities showed normal EEG, plus sphenoid electrode after 15 cases showed abnormalities, including 12 cases of sphenoid electrode induced by hyperventilation, with the exception of one case of δ rhythm background , All showed epileptic discharge. The distribution area is mainly in the temporal area, visible in all areas. Sphenoid pole with hyperventilation positive rate increased by 33.3%, especially on the detection rate of abnormal psychosis epilepsy. The author believes that the EEG diagnosis of mental abnormalities can provide useful information to determine the pediatric sphenoid electrode as a safe and effective method.