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  • Title: Brain correlates of self-rated originality of ideas: evidence from event-related power and phase-locking changes in the EEG.
    Author: Grabner RH, Fink A, Neubauer AC.
    Journal: Behav Neurosci; 2007 Feb; 121(1):224-30. PubMed ID: 17324067.
    Abstract:
    In the present study, we contrast oscillatory brain activity during the production of subjectively more versus less original ideas. A sample of 26 participants worked on two verbal creativity problems and subsequently rated the produced ideas with respect to their originality. On the basis of these self-ratings, ideas were divided into a more and a less original list within each participant. Cortical activity was assessed by means of event-related changes in EEG power (synchronization and desynchronization) and phase locking in two alpha bands. Analyses revealed that more, as compared with less, original ideas elicited a stronger event-related synchronization of alpha activity (power increases from the pre-stimulus reference to the activation interval) and higher phase coupling in the right hemisphere. These findings corroborate the importance of right-hemispheric cortical networks in creative idea generation.
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