[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.

[Adolescents under conditions of chronic family stress].

The influence of the type of the nervous system on psychophysiological stress reaction was studied in a group of adolescents at the age of 15-17 years with chronic stress. Adolescents with the weak type of the nervous system were to a greater extent subject to psychological disorders; adolescents with the intermediate type of the nervous system suffered more from disorders in physiological sphere, whereas persons with the strong type appeared to be most stable in the situation of chronic family stress.

[Features of the spectral power of the EEG rhythms in autistic children and their relation with the progress of different symptoms in schizophrenia].

Right hemispheric dominance of the baseline alpha-band spectral power was revealed in 5-7 years boys with autism. This feature persisted during performance of a cognitive task (counting). Also, boys with autism showed lowered level of the alpha spectral power as compared with healthy children.

[Comparative EEG study in normal and autistic children].

The work represents the results of a comparative study of spectral power as well as averaged coherence in alpha, beta and gamma EEG bands in 5-to-7-year-old autistic and healthy boys in the state of rest and under cognitive load (mental calculation). The mean age of the examined children was 6 years 4 months. In both healthy and autistic children, there was a clear-cut baseline frontal-occipital gradient of the alpha activity.