ANALYSIS OF EEG SPECTRAL CAPACITY IN INTUITIVE HUMAN THINKING
Journal Title: Вісник Одеського національного університету. Біологія - Year 2016, Vol 21, Issue 2
Abstract
The search for a solution to a problem or an answer to a complicated question, as well as methods and strategies for solving tasks, is often based on intuitive mechanisms of thinking. In everyday and creative activities, there is a growing practical interest in the problem of intuition as a condition for formation and as a criterion of the professional competence of specialists in different areas of activity. The aim of the work was to study intuitive peculiarities of thinking in the process of solving certain kinds of tasks. The object of the study was the intuitive type of thinking as a component of individual special features of the intellectual activity of a person. The research was carried out by means of the electroencephalography method. The distribution of electrodes was realized by the international system 10/20. The registration was performed in a monopolar way. The 4-minute record was analyzed, for which we calculated the values of the standard spectral capacity of the internal hemispheric couples in frequency bands which correspond to delta (1-4 Hz), theta (4-8 Hz), alpha (8-13 Hz), beta-1-(20-30 Hz) and beta-2-(50-70 Hz) rhythms. The research into the intuitive thinking was carried out using photos and Latin captions to them. The people under research chose the intuitively correct answer out of three. As a result of the electroencephalographic study in the process of doing the tasks involving creative thinking, the bioelectric activity with the dominance of delta waves was registered. The people with a higher manifestation of intuitive thinking demonstrated polyrhythmic activity of the cortex, with delta-oscillations constituting the greater part. It was also established that the spectrum of capacity of the alpha-range decreases and symmetrically embraces the whole brain, the intuitive thinking is little connected with the beta-1-rhythm capacity, and an increase in the spectrum of capacity of the beta-2 range indicates an active functional state of the subcortex formations and the cortex. In the theta range, the greatest changes in the values of the spectrum of capacity were observed in the frontal zones.
Authors and Affiliations
T. O. Tretiak, O. V. Severynovska, I. V. Drehval
Keywords
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