Abnormalities of quantitative electroencephalography in children with Asperger disorder in various conditions

Quantitative electroencephalography (qEEG) is an essential tool for the evaluation and treatment of neurophysiologic disorders. Careful analysis of the recorded brain signals can provide insights into and improved understanding of the mechanism causing disorders. In this work spectrogram was used as a tool for evaluating qEEG in 15 children with Asperger disorder (10 boys and 5 girls aged 6–11) and in 11 normal children (7 boys and 4 girls with the same age range). Signals of two groups of subjects were recorded in nine conditions. Recorded signals with the relaxed open-eyed condition in gamma band, those recorded with looking at stranger's picture inverted condition in alpha and beta bands and the ones obtained with participants looking at a mother's picture inverted in the beta band resulted in the best discriminations, with two groups as 96.2%, 83.3%, 70.6% and 77.8%, respectively.