Publications by authors named "G V Taratynova"

The characteristics of the spatial organization of biopotentials in the neocortex during the mental creation of original and standard mental images were studied. Intra-and interhemisphere coherence associations at different EEG frequency ranges were assessed, along with linkages between relative changes in measures of linear (correlation coefficient) and non-linear (multiple entropy) processes between different areas of the neocortex. Creation of original thoughts was found to be associated with a significantly smaller number of associations with decreased coherence in the high-frequency alpha range between distant points than on formation of standard images.

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Features of spatial organization of neocortical potentials during mental creating of the original and standard visual images were studied. Intrahemispheric and interhemispheric coherence in different EEG frequency bands and temporal relations between relative changes in the index of linear (correlation coefficient) and non-linear (multiple entropy) processes in different neocortical areas were analysed. Number of decreased coherence values in the high-frequency alpha subband between remote neocortical points during creating of an original image was significantly lower than during creating of a standard image.

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The spatial organization of biopotentials in the cerebral cortex of 23 subjects who were students at the Faculty of Graphic Arts ("professionals") as well as 39 subjects lacking systematic experience of visual images ("non-professionals") was compared with the aim of identifying EEG correlates of the experience of visual images (image formation) in humans. Changes in measures of the spatial organization of biopotentials (spatial synchronization, spatial disordering, coherence, and spectral power) were analyzed as subjects mentally composed visual images consisting of two simple graphic elements - right angles and oblique lines. The total number of image elements increased in each of four sequential tasks, from a number which could be analyzed at the conscious level (4-7 elements) to a number exceeding analysis at the conscious level (8-16).

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The comparison of EEG spatial organization between groups of 23 students of graphic arts department ("professional" subjects) and 39 subjects of another specialization ("non-professional" subjects) was made in order to find EEG correlates of visual imagery experience. Changes in the spatial organization of biopotentials (spatial synchronization and spatial disorder, spectral power and coherence) were analyzed while subjects mentally composed visual images from two simple elements, right angle and oblique line. The total number of elements presented for the image composition increased with each subsequent task (in total, four tasks were presented) from the number adequate to simultaneous perception and conscious processing (less than 7 +/- 2) to a much higher number.

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Cnanger of the spatial organization of biopotentials (spatial synchronization and disorder, spectral power and coherence) were analyzed during mental creating of visual images from two simple elements: the angle the oblique line. With the transition from the first to the fourth task, the total number of used elements increased from the number suitable for simultaneous presentation and conscious processing (less than 7 +/- 2) to a much higher number. Changes in the characteristics of the spatial organization of biopotentials associated with the increase in the number of the elements can be explained by a change in the information processing strategy, transformation of information processing strategy, i.

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