期刊名称：Journal of Indian Association for Child and Adolescent Mental Health
电子版ISSN：0973-1342
出版年度：2017
卷号：13
期号：3
页码：180-207
出版社：Indian Association for Child and Adolescent Mental Health
摘要：Background: Children with attention-deficit hyperactivity disorder (ADHD) haveseveral cognitive deficits such as inattention, poor working memory and behavioraldisinhibition. Electroencephalography (EEG) signals are related to better understandingthe neuronal functions in children with ADHD.Aims: The aim of this study was to examine resting-state EEG power and identifyspecific neural abnormalities through oscillatory patterns in ADHD children.Method: A total of 18 subjects between the age of 8 to12 years participated with 9children diagnosed with ADHD and 9 matched healthy participants (HP). Conner’sParent Rating Scale (CPRS) was administered to establish a behavioural profile for theADHD group. Using 19 channels, EEG was recorded in eyes-closed conditions.EEG power spectral analysis was used. Wilcoxon-Mann-Whitney test was used to181compare EEG signals of the ADHD and HP group. The critical value for significance wasset at 0.05 and 0.01 levels.Result: The ADHD group had elevated absolute power in gamma1 band at the righthemispheric frontal and central channels. With relative power measures, children withADHD had elevated levels of delta and gamma bands in the central and frontal regions.The ADHD group showed decreased relative power for alpha frequency in the occipitalregion, and decreased relative theta activity.Conclusion: Increased relative delta activity suggests cortical underarousal anddecreased theta may related to cognitive impairment in ADHD children. Elevated gammaactivity in ADHD children denotes their enhanced level of neuronal excitation withunspecific activation of processing resources. A distinct neural pattern distinguishes theADHD group from the HP.
