N E Sviderskaia

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In the paper the theoretical problems are discussed of the spatial organization of brain electrical activity. It is considered as a multilevel realization of synergetic principle in formation of functional systems, which underlie behavior and mental activity. The role is discussed of the spatial-temporal superposition of coherent structures of potentials in(More)
Analysis of constraints, which are imposed on correctness of conclusions drawn from the studies of the spectrum-correlation model of cortex electrical activity, and necessity of enlarging interaction forms which have to be studied, brought to development a new index for estimating spatial order of cortex electrical processes. This index and the technique(More)
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)(More)
To study the possibility of discrimination of different periods of alcohol abstinence state (acute, subacute, and arrested) the brain electrical activity of 30 patients with chronic alcoholism was recorded from 24 sites of convexital scalp surface during the detoxication. The "Synchro-EEG" program package was applied for EEG processing using 840 parameters.(More)
A study of spatial synchronization of the cortical biopotentials of man by multi-channel registration (leads from 48 points) made it possible to elucidate the common and specific characteristics of the action of typical (haloperidol) and atypical (clozapine) neuroleptics. The study was conducted on 10 subjects with the normal bioelectrical activity of the(More)
Influence of anxiety (tested by Luscher) on the spatial organization of brain electrical activity was studied using multichannel EEG recording. In subjects with a high-level of anxiety, the level of coherence and spectral power of some high-frequency EEG components was higher in the parieto-temporal regions of both hemispheres than that in the opposite(More)
Within-pair similarity of topographic maps of the cortical electrical activity was studied in 11 monozygotic pairs of twins (MZ) and 20 genetically unrelated persons (UP) during rest and solving four mental tasks. During rest similarity of topographic maps higher in MZ in comparison with UP. We showed that no specific frequency band influenced formation of(More)
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(More)
A study was made on 13 subjects in a state of rest and mental stress, of interconnection between the level of distant biopotential synchronization of separate cortical zones (which is a criterion of the rate of brain activation) and the spectral power of EEG frequencies. There is a statistically significant positive correlation between the first parameter(More)