Investigation of Brain Waves Patterns in Coherence of Theta Band during Convergent and Divergent Thinking

This study examined the EEG patterns changes of the brain’s hemispheres during convergent thinking (CT) and divergent thinking (DT). 34 subjects (19 boys and 15 girls) were chosen according to the convenience sampling. Each of them assigned in three condition (rest, CT and DT). In all 3 conditions EEG patterns were recorded from 19 scalp electrodes. The recorded EEG in theta band, were transformed into quantitative form (QEEG) by using Neuroguide software and then were analyzed by repeated measures ANOVA method. The results showed differences in left and right hemispheres, separately; DT and CT had higher coherence than rest condition. Moreover, the results revealed that two hemispheres hadn’t significantly coherence differences during these conditions.