title: Unleashing creativity: The role of left temporoparietal regions in evaluating and inhibiting the generation of creative ideas.
abstract: Human creativity is thought to entail two processes. One is idea generation, whereby ideas emerge in an associative manner, and the other is idea evaluation, whereby generated ideas are evaluated and screened. Thus far, neuroimaging studies have identified several brain regions as being involved in creativity, yet only a handful of studies have examined the neural basis underlying these two processes. We found that an individual with left temporoparietal hemorrhage who had no previous experience as an artist developed remarkable artistic creativity, which diminished as the hemorrhage receded. We thus hypothesized that damage to the evaluation network of creativity during the initial hematoma had a releasing effect on creativity by "freeing" the idea generation system. In line with this hypothesis, we conducted a subsequent fMRI study showing that decreased left temporal and parietal activations among healthy individuals as they evaluated creative ideas selectively predicted higher creativity. The current studies provide converging multi-method evidence suggesting that the left temporoparietal area is part of a neural network involved in evaluating creativity, and that as such may act as inhibitors of creativity. We propose an explanatory model of creativity centered upon the key role of the left temporoparietal regions in evaluating and inhibiting creativity.
authors.affiliation: Department of Psychology, University of Haifa, Haifa 31905, Israel. Electronic address: naama27@gmail.com.
authors.forename: Naama
authors.initials: N
authors.lastname: Mayseless
authors.affiliation: Rambam Medical Center, P.O. Box 9602, Haifa 31096, Israel. Electronic address: jaharon@rambam.health.gov.il.
authors.forename: Judith
authors.initials: J
authors.lastname: Aharon-Peretz
authors.affiliation: Department of Psychology, University of Haifa, Haifa 31905, Israel. Electronic address: sshamay@psy.haifa.ac.il.
authors.forename: Simone
authors.initials: S
authors.lastname: Shamay-Tsoory
mesh_terms: D000328:Adult; D001154:Art; D001931:Brain Mapping; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000523:psychology*; D003405:Creativity; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D010296:Parietal Lobe / Q000000981:diagnostic imaging* / Q000503:physiopathology; D020521:Stroke / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000523:psychology*; D013702:Temporal Lobe / Q000000981:diagnostic imaging* / Q000503:physiopathology
keywords: Creativity; Idea evaluation; Originality; Temporoparietal; Two-fold model of creativity; fMRI