异常脑电图主要表现为弥漫性慢波活动22例，局限于一侧半球的慢波活动34例，散在或阵发性棘波、尖波或棘慢、尖慢综合波49例。

The abnormal EEGs mainly showed diffuse slow waves in 22 patients, slow waves localized in one hemi - sphere in 34, epileptiform discharges in 49 patients.

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本组患儿脑电异常率为92%（23/25），其中低波幅快波8例（32%），弥漫性高波幅慢波性异常5例（20%）；

The abnormal rate of EEG was 92 per cent(23/25). The patients with fast wave of low amplitude were 8 cases(32%).

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