[Effect of learning on EEG characteristics of children during the third year].

Characteristics were studied of frequency spectrum and spatial-temporal organization of bioelectrical cerebral activity and also of heart rate dynamics in children of the third year of life in the state of quiet wakefulness and during orienting reaction. Changes were recorded in the parameters of the cerebral activity under the influence of developing learning and in particular of formation of symbolic thinking function. It has been established that the involvement of the child in the process of learning leads to definite shifts of the EEG of quiet wakefulness testifying to acceleration of the process of the CNS functional maturation. Mastering of a high degree of play symbolization causes not only changes in the EEG but also an increase of the child orientating-investigatory activity.