[Cortex biopotential coherence changes in men and women during performance of verbal creative task].
Patterns of EEG coherence changes induced by performance of a verbal creative task were studied in 14 male and 13 female university students. EEG coherence was computed for six frequency bands in the range from 4 to 30 Hz. Experiment consisted of two series: in the first series, the task was performed under the instruction "to create sentences", in the second series under the instruction "to create original sentences". Independently of the instruction, coherence reactivity values (data of the experiment minus corresponding baseline data) were negative in the tetal and alpha2 ranges and positive in the beta2 range in all subjects. Sex differences related to the type of instruction were found in changes in the total reactivity values of intrahemispheric coherence (sum of intrahemispheric coherence reactivity values for the all frequency bands studied). The task performance under the instruction "to create original sentences" vs. the task performance under the instruction "to create sentences" was accompanied by changes of the right-hemispheric dominance (i.e. higher values of coherence in the right hemisphere than in the left hemisphere) to the left-hemispheric dominance in women and the opposite effect in men.
Tarasova
I V
IV
Vol'f
N V
NV
Razumnikova
O M
OM
D000328:Adult; D000513:Alpha Rhythm / Q000379:methods; D001931:Brain Mapping / Q000379:methods; D003071:Cognition / Q000502:physiology*; D003405:Creativity; D004569:Electroencephalography / Q000379:methods; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D014705:Verbal Behavior / Q000502:physiology*