Brain-Wide Character of the Process of Distinguishing Short Time Intervals and Its Regional Specificity

From the standpoint of the system-evolutionary approach we analyzed the regional specificity of brain support of behavior when solving the task of distinguishing short time intervals. The “Yes-No” task for distinguishing short time intervals was used (N = 10 who learned to distinguish short time intervals). When analyzing 19 scalp electrodes of EEG by methods of cluster and factor analysis, 2 groups of electrodes were formed: frontal-central and parietal-occipital. The general configuration of the selected components of the ERP is shown, which is consistent with the ideas of the general cerebral character of behavior. The differences between the groups of electrodes consisted in amplitude-temporal characteristics. In this connection, the systemic psychophysiological significance of the regional specificity of brain processes is discussed.