The effect of transcranial random noise stimulation (tRNS) over bilateral posterior parietal cortex on divergent and convergent thinking

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dc.contributor.authorPeña Lasa, Javier
dc.contributor.authorSampedro, Agurne
dc.contributor.authorIbarretxe Bilbao, Naroa
dc.contributor.authorZubiaurre Elorza, Leire
dc.contributor.authorAizpurua Gordillo, Aralar
dc.contributor.authorOjeda del Pozo, Natalia
dc.date.accessioned2025-10-03T10:53:30Z
dc.date.available2025-10-03T10:53:30Z
dc.date.issued2020-09-23
dc.date.updated2025-10-03T10:53:30Z
dc.description.abstractCreativity pervades many areas of everyday life and is considered highly relevant in several human living domains. Previous literature suggests that the posterior parietal cortex (PPC) is related to creativity. However, none of previous studies have compared the effect of transcranial random noise stimulation (tRNS) over bilateral PPC on both verbal and visual divergent thinking (DT) and Remote Associates Test (RAT) in the same experimental design. Forty healthy participants were randomly assigned to tRNS (100–500 Hz) over bilateral PPC or sham group, for 15 min and current was set at 1.5 mA. Participants’ creativity skills were assessed before and after brain stimulation with the Unusual Uses and the Picture Completion subtests from the Torrance Test of Creative Thinking and the RAT. ANCOVA (baseline scores as covariate) results indicated that tRNS group had significantly higher scores at post-test in RAT and visual originality compared to sham group. Unusual Uses, on the other hand, was not significant. Improvement in RAT suggests the involvement of PPC during via insight solution which may reflect internally directed attention that helps the recombination of remotely associated information. The improvement in visual originality dimension from DT may be due to a higher internally directed attention while reducing externally oriented attention.en
dc.description.sponsorshipThis work was supported by a 2018 Leonardo Grant for Researchers and Cultural Creators, BBVA Foundation, the Department of Education and Science of the Basque Government (Team A) [IT946‐16] and AS was supported by a Predoctoral Fellowship from the Fundación Tatiana Pérez de Guzmán el Buenoen
dc.identifier.citationPeña, J., Sampedro, A., Ibarretxe-Bilbao, N., Zubiaurre-Elorza, L., Aizpurua, A., & Ojeda, N. (2020). The effect of transcranial random noise stimulation (tRNS) over bilateral posterior parietal cortex on divergent and convergent thinking. Scientific Reports, 10(1). https://doi.org/10.1038/S41598-020-72532-3
dc.identifier.doi10.1038/S41598-020-72532-3
dc.identifier.eissn2045-2322
dc.identifier.urihttps://hdl.handle.net/20.500.14454/3846
dc.language.isoeng
dc.publisherNature Research
dc.rights© The Author(s) 2020
dc.titleThe effect of transcranial random noise stimulation (tRNS) over bilateral posterior parietal cortex on divergent and convergent thinkingen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.issue1
oaire.citation.titleScientific Reports
oaire.citation.volume10
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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