Creativity is associated with a characteristic U-shaped function of alpha power changes accompanied by an early increase in functional coupling.
Creative ideation
EEG
Phase locking value
Time-course
Upper alpha power
Journal
Cognitive, affective & behavioral neuroscience
ISSN: 1531-135X
Titre abrégé: Cogn Affect Behav Neurosci
Pays: United States
ID NLM: 101083946
Informations de publication
Date de publication:
08 2019
08 2019
Historique:
pubmed:
14
2
2019
medline:
1
9
2020
entrez:
14
2
2019
Statut:
ppublish
Résumé
Although there exists increasing knowledge about brain correlates underlying creative ideation in general, the specific neurocognitive mechanisms implicated in different stages of the creative thinking process are still under-researched. Some recent EEG studies suggested that alpha power during creative ideation varies as a function of time, with the highest levels of alpha power after stimulus onset and at the end of the creative thinking process. The main aim of the present study was to replicate and extend this finding by applying an individual differences approach, and by investigating functional coupling between long distance cortical sites during the process of creative ideation. Eighty-six participants performed the Alternate Uses (AU) task during EEG assessment. Results revealed that more original people showed increased alpha power after stimulus onset and before finalizing the process of idea generation. This U-shaped alpha power pattern was accompanied by an early increase in functional communication between frontal and parietal-occipital sites during the creative thinking process, putatively indicating activation of top-down executive control processes. Participants with lower originality showed no significant time-related variation in alpha power and a delayed increase in long distance functional communication. These findings are in line with dual process models of creative ideation and support the idea that increased alpha power at the beginning of the creative ideation process may indicate more associative modes of thinking and memory processes, while the alpha increases at later stages may indicate executive control processes, associated with idea elaboration/evaluation.
Identifiants
pubmed: 30756348
doi: 10.3758/s13415-019-00699-y
pii: 10.3758/s13415-019-00699-y
pmc: PMC6711878
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1012-1021Références
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