Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages

Abstract Neuroimaging and transcranial direct current stimulation (tDCS) research has revealed that generating novel ideas is associated with both reductions and increases in prefrontal cortex (PFC) activity, and engagement of posterior occipital cortex, among other regions. However, there is substa...

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Autores principales:	Evangelia G. Chrysikou, Hannah M. Morrow, Austin Flohrschutz, Lauryn Denney
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/103b32f2d4654df8b6fb646f55e3c5fb
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spelling	oai:doaj.org-article:103b32f2d4654df8b6fb646f55e3c5fb2021-12-02T13:44:15ZAugmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages10.1038/s41598-021-85804-32045-2322https://doaj.org/article/103b32f2d4654df8b6fb646f55e3c5fb2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85804-3https://doaj.org/toc/2045-2322Abstract Neuroimaging and transcranial direct current stimulation (tDCS) research has revealed that generating novel ideas is associated with both reductions and increases in prefrontal cortex (PFC) activity, and engagement of posterior occipital cortex, among other regions. However, there is substantial variability in the robustness of these tDCS‐induced effects due to heterogeneous sample sizes, different creativity measures, and methodological diversity in the application of tDCS across laboratories. To address these shortcomings, we used twelve different montages within a standardized tDCS protocol to investigate how altering activity in frontotemporal and occipital cortex impacts creative thinking. Across four experiments, 246 participants generated either the common or an uncommon use for 60 object pictures while undergoing tDCS. Participants also completed a control short-term memory task. We applied active tDCS for 20 min at 1.5 mA through two 5 cm × 5 cm electrodes over left or right ventrolateral prefrontal (areas F7, F8) or occipital (areas O1, O2) cortex, concurrent bilateral stimulation of these regions across polarities, or sham stimulation. Cathodal stimulation of the left, but not right, ventrolateral PFC improved fluency in creative idea generation, but had no effects on originality, as approximated by measures of semantic distance. No effects were obtained for the control tasks. Concurrent bilateral stimulation of the ventrolateral PFC regardless of polarity direction, and excitatory stimulation of occipital cortex did not alter task performance. Highlighting the importance of cross-experimental methodological consistency, these results extend our past findings and contribute to our understanding of the role of left PFC in creative thinking.Evangelia G. ChrysikouHannah M. MorrowAustin FlohrschutzLauryn DenneyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Evangelia G. Chrysikou Hannah M. Morrow Austin Flohrschutz Lauryn Denney Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
description	Abstract Neuroimaging and transcranial direct current stimulation (tDCS) research has revealed that generating novel ideas is associated with both reductions and increases in prefrontal cortex (PFC) activity, and engagement of posterior occipital cortex, among other regions. However, there is substantial variability in the robustness of these tDCS‐induced effects due to heterogeneous sample sizes, different creativity measures, and methodological diversity in the application of tDCS across laboratories. To address these shortcomings, we used twelve different montages within a standardized tDCS protocol to investigate how altering activity in frontotemporal and occipital cortex impacts creative thinking. Across four experiments, 246 participants generated either the common or an uncommon use for 60 object pictures while undergoing tDCS. Participants also completed a control short-term memory task. We applied active tDCS for 20 min at 1.5 mA through two 5 cm × 5 cm electrodes over left or right ventrolateral prefrontal (areas F7, F8) or occipital (areas O1, O2) cortex, concurrent bilateral stimulation of these regions across polarities, or sham stimulation. Cathodal stimulation of the left, but not right, ventrolateral PFC improved fluency in creative idea generation, but had no effects on originality, as approximated by measures of semantic distance. No effects were obtained for the control tasks. Concurrent bilateral stimulation of the ventrolateral PFC regardless of polarity direction, and excitatory stimulation of occipital cortex did not alter task performance. Highlighting the importance of cross-experimental methodological consistency, these results extend our past findings and contribute to our understanding of the role of left PFC in creative thinking.
format	article
author	Evangelia G. Chrysikou Hannah M. Morrow Austin Flohrschutz Lauryn Denney
author_facet	Evangelia G. Chrysikou Hannah M. Morrow Austin Flohrschutz Lauryn Denney
author_sort	Evangelia G. Chrysikou
title	Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
title_short	Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
title_full	Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
title_fullStr	Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
title_full_unstemmed	Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
title_sort	augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/103b32f2d4654df8b6fb646f55e3c5fb
work_keys_str_mv	AT evangeliagchrysikou augmentingideationalfluencyinacreativitytaskacrossmultipletranscranialdirectcurrentstimulationmontages AT hannahmmorrow augmentingideationalfluencyinacreativitytaskacrossmultipletranscranialdirectcurrentstimulationmontages AT austinflohrschutz augmentingideationalfluencyinacreativitytaskacrossmultipletranscranialdirectcurrentstimulationmontages AT lauryndenney augmentingideationalfluencyinacreativitytaskacrossmultipletranscranialdirectcurrentstimulationmontages
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Augmenting ideational fluency in a creativity task across multiple transcranial direct current stimulation montages

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