title: [Topographic characteristics of cortex activity in delta-, alpha2-, and gamma2- frequency bands related to social creativity].
abstract: Social creativity-related topographic changes of the delta, alpha2, and gamma2 power were studied using 19-channel EEG. Originality and fluency indices of social thinking were evaluated on basis of specially developed 'divergent' task solution that stimulated different interpretations of social scenes; complex visual stimuli (architectural building) were used as control task. 'Divergent' task performing was characterized by both the greater power of the delta and alpha2 rhythms mostly in the right hemisphere and widespread increase in the gamma2 power as compared with the control task. Positive correlations between delta and gamma2 rhythms in baseline condition were revealed in the fronto-parietal cortex, and this relationship between low- and high-frequency oscillations while 'divergent' task performing was found in the right posterior cortex. Special topographic patterns of delta and gamma2 activity as predictors of social creativity were obtained using multiple regression analysis. These patterns can be interpreted as EEG correlates of a summation of endogenous and exogenous components of social thinking.
authors.forename: O M
authors.initials: OM
authors.lastname: Razumnikova
authors.forename: S B
authors.initials: SB
authors.lastname: Finikov
mesh_terms: D000293:Adolescent; D000513:Alpha Rhythm / Q000502:physiology*; D001921:Brain / Q000502:physiology; D001931:Brain Mapping / Q000379:methods; D002540:Cerebral Cortex / Q000502:physiology*; D003405:Creativity; D003700:Delta Rhythm / Q000502:physiology*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D012919:Social Behavior; D055815:Young Adult