摘要
为了探讨学习困难儿童的脑功能变化,作者应用脑电图及脑电地形图技术对32名学习困难儿童和32名正常儿童进行了配对研究。结果表明,学习困难儿童慢波功率高于正常儿童,α频段尤其α_2频段功率低于正常儿童,(δ+θ)/(α+β)显示慢波增多是学习困难儿童脑电的主要特征。本研究提示学习困难存在有一定的神经生理基础,其发病机制与大脑发育迟滞有关。
With EEG and Brain Electrical Activity Mapping,the author studied the change on EEG in resting condition of 32 Learning-disabled children and 32 normal chil dren,in order to explore the brain function alternation of learning disabilities (LD). The results showed that the slow wave (δ &θ Band) power of LD was higher than of the normal children;θ band power,in especial α2 band power was lower than of normal children. Values of the complex index (δ+θ)/(α + β) revealed that the increase of slow wave was the characteristics of LD. This research suggested that neurophysiological alteration plays cartain role in LD pathogenesis,which was related to brain maturational lag.
关键词
学习困难
脑电图
脑电地形图
Learning Disability Electroencephalography (EEG) Brain Electrical Activity Mapping (BEAM)