[The disordered organization of the cortical processes in depression].

The study of depressive patients with the method of the EEG mapping revealed some stable differences from the norm. Firstly, in depression there are the disturbances of the definite cortical zones' activation: the right anterior and the left posterior cortical parts are hyperactivated while the left anterior and the right posterior-- relatively inhibited, evidently causing the informational processing disturbances. The important link of these disturbances--the disconnection of the anterior and the posterior cortical regions that could be called "transversal functional blockade". The second feature of the electrical activity of the brain in depression is the absence of the high frequency component of alpha-rhythm, that evidently in normal conditions is connected with the positive emotions mechanisms. The third feature is the difference in arousal reaction in the alpha- and beta-bands frequencies.