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低波幅β活动是人类脑电图（EEG）正常波形之一，但在某些疾病时可出现异常β活动。有关成年人的异常β活动已有较多认识，然而迄今为止却很少有小儿的相应研究。本研究包括清醒EEG中有β活动的正常儿童80例（男40，女36人，分为小于3岁、3岁～、5～8岁、大于8岁4个年龄组，每组20人）和患有各种中枢神经疾患的儿童96例，所有小儿描记前72小时均未使用过任何镇静或麻醉剂。在随访中均进行全面神经系统检查，根据不同年龄采用DDST、PPVT、绘入试验、CRT、Weekstar等量表进行智力筛查，并结合学习成绩、社会适应能力、作出智能判断。部份异常β活动病例进行EEG1～3次随访。
Low-amplitude beta activity is one of the normal waveforms of human electroencephalograms (EEGs), but abnormal beta activity can occur in some diseases. There is a growing awareness of abnormal β activity in adults, but so far there have been few studies in children. This study included 80 normal children with β activity in conscious EEG (40 males and 36 females, divided into 4 groups of less than 3 years old, 3 years old, 5 to 8 years old and over 8 years old, 20 in each group) And 96 children with various CNS disorders. No sedation or anesthetic was used in all children until 72 hours prior to tracing. During the follow-up, a comprehensive neurological examination was conducted. According to different ages, DDST, PPVT, paint-in test, CRT, Weekstar and other scales were used for intelligence screening and combined with academic performance and social adaptability to make intelligent judgments. Some patients with abnormal β activity EEG 1-3 times follow-up.