We analyzed changes of beta2(18–30Hz) power and rCBR during volunteer's fulfillment of creative tasks. We obtained rather similar topography changes in beta2 frequency band and PET data (fulfilling creative task without emotional evolvement in comparison with control one). There were an increase of rCBR in the left inferior frontal gyrus (Brodmann area 47; p<0.001) and decrease of beta2 power in the similar zones. According to literature data, that might be associative memory retrieval, semantic analysis of information, imagination, appearing of spontaneous emotional states. This area also probably participates in control of idea's originality. When we added evolved emotional component to creative tasks, topographic similarity was destroyed. Fulfilling of creative tasks with evolved emotional state was accompanied by local rCBR increase in the BA 47 for both positive and negative creative tasks, and rCBR increase in associative visual cortex for negative creative task In EEG there were topography similar, generalized and directly opposite effects. Fulfillment of emotionally negative creative task demonstrated decrease of beta2 power, fulfillment of emotionally positive creative task -power increase in the same frequency band. These data might reflect different aspects of cognitive processes that could be shown by different methods.

supporting grants N.Sch. - 1921.2003.4