[The lateralization of human visual-spatial perception during verbal reinforcement].

Influence of positive (word "good") and negative (word "mistake") verbal reinforcement on the ability of mental construction of six geometric figures from two fragments administered tachistoscopically under backward masking conditions was studied in healthy persons and patients with chronic alcoholism. In healthy persons negative verbal reinforcement induced a reduction in the latency of N200 and growth of the amplitude of N200-P300 components of evoked potentials mainly in the right parietal area and vertex. There were no such changes in patients. Worse performance of the visuo-spatial task by the patients may be explained by the general suppression of the brain evoked potentials and disappearance of interhemispheric asymmetry which is characteristic for healthy persons and play an important role in visuo-spatial perception.