[Comparative EEG-study of normal and autistic children].

The work represents the results of a comparative study of a spectral power as well as averaged coherence in theta and gamma-EEG band in a healthy and autistic boys (the mean age 6 years 1 month). Healthy boys showed a decreasing in theta spectral power as well as in averaged coherence, and increasing in gamma spectral power as well as in averaged coherence during cognitive task. Spectral power of gamma band shows more high scores in autistic boys than in normal ones. Cognitive task situation do not change spectral power of the fast oscillations in autistic children. Spectral power of theta--band shows more low scores in autistic boys than in normal ones. Cognitive task situation do not change spectral power and averaged coherence of theta oscillations in autistic children.