Intelligence and perception of time

The aim of our study was to investigate electroencephalographic correlates of intelligence during human’s intellectual activity connected with the perception of short intervals of time. In volunteers, practically healthy young men and women aged 18- 22, students of Tomsk universities, we investigated the EEG correlates of intelligence with reproduction and measuring short intervals of time lasting 200 and 800 MS in the presence and in the absence of feedback about performance. When reproducing time intervals, their duration was specified by a visual stimulus (light square with a side of 2 cm, which appears in the center of a dark screen, and when measuring - digit. When performing the same activities with feedback a moment after reproduction or measuring the charge, the time interval on the screen appeared, in percentage terms, relative error of measuring or reproducing this interval. Recording of EEG was carried out with open and closed eyes, and also during perception of time in the frontal, central, temporal, parietal and occipital leads in 10-20%. We established that the intelligence has a significant impact on all the main stages of the process of perception of time: on the perception and analysis of time-giving stimulus, motor reaction of the subject related to pressing a computer key and analysis of the error signal reproduction or measuring the time interval. We found mostly positive correlations between verbal and nonverbal intelligence with the level of cortical interactions at frequencies Gama-rhythm. The nature of these correlations is different for boys and girls, it depends on the frequency range of gamma-rhythm and the type of activity. We found a close correlation indicators with the level of intelligence of phase interactions between high - and low-frequency EEG rhythms. We established the dependence of these correlations from the gender of the subjects and the type and stage of the performed activity.Our results and some literature data suggest that the high accuracy of the perception of time in individuals with high intelligence is ensured not only by high speed of signal transmission in the central nervous system, but also by more efficient processes of intracerebral integration, coding, compression and coordination of neural messages in the brain. The article contains 7 figures, 25 ref.

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