REPRODUCTION OF TIME INTERVALS AND THE IN DIVIDUAL EEG STRUCTURE IN HUMANS

The perception of time by humans was studied by the method of time rep roduction. The EEG was recorded in Os, Od, Cs, Cd, Fs and Fd derivatio ns. The relative EEG spectral power was determined in the delta-1, del ta-2, theta, alpha, beta-1, and beta-2 ranges. All the subjects were d ivided in two groups: I - those who reproduced time intervals with a d elay, and II - those who were ahead in their reproduction. The spectra l power of the delta-rhythm was significantly lower and that of the be ta-rhythm higher in the subjects of the I than of the II group. In sub jects of the II group total power of the beta range (beta-1 + beta-2) was significantly less than that in the delta-range (delta-1 + delta-2 ). This ratio was inverse in subjects of the I group. The described re lationships were expressed both in the background EEG and during funct ional loads in all the studied derivations.