RESUMO
OBJECTIVE: To find out the distinctive topographic EEG profiles of subject with attention deficit hyperactivity disorder comparing with age & sex matched control. METHOD: The quantitative electroencephalographies(QEEGs) of 20 drug-naive ADHD patients without any other psychiatric diagnosis were analyzed and compared to age and sex-matched controls using spectral analysis. RESULTS: 1) Slow waves(delta and theta) bipolar relative powers of the diverse areas in both hemispheres increased in drug-free ADHD patients, compared to controls. 2) Delta and theta bipolar relative powers of localized centro-temporal areas in left hemispheres increased in drug-free ADHD patients compared to controls. 3) Interhemispheric coherence and asymmetry are increased in diverse areas in ADHD patient compared to controls. CONCLUSION: We confirmed QEEG abnormalities in pure ADHD patients, especially in frontal and parietal areas. These results are compatible with other structural and functional imaging studies of ADHD.