Comparison of Quantitative Electroencephalography (qEEG) Indices in Children with Attention Deficit-Hyperactivity Disorder and Healthy Children

and useful measures of ongoing brain activity. They may have a role in ADHD diagnosis. This study aims at evaluating the findings of quantitative EEG (QEEG) in children with ADHD. Methods: In this cross-sectional controlled study, 30 male children with ADHD aged 6-12 years were compared with 30 male age-matched healthy children. The QEEG was performed in all participants and the data with regard to the brain waves were compared between the two groups. Results: Regarding the band type, generalized decrease in absolute power of “high-beta” waves was found in the ADHD group. The power ratio of alpha, beta, delta and theta waves to high-beta wave were increased in the ADHD group in decreasing order. The recorded waves from the frontal, parietal and occipital lobes, with different absolute power between the two groups, were demonstrated to have a significant preponderance in children with ADHD. This preponderance was in favor of the control group in the temporal lobe. There was not a significant difference in central region between the two groups. Conclusion: According to our results, generalized decrease in absolute power of “high-beta” waves was a constant finding in ADHD children.