Evidence map›Paper›PMID 25913062›Full record

Trial reportCortex; a journal devoted to the study of the nervous system and behavior2015

Functional role of frontal alpha oscillations in creativity.

Caroline Lustenberger, Michael R Boyle, A Alban Foulser, Juliann M Mellin, Flavio Fröhlich

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Cortex; a journal devoted to the study of the nervous system and behavior, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04650438 (Sleep and Creativity), which is not on this map. Cited by 52 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04650438 nawithdrawnnot on this mapstarted 2021, after this paper: background citation

Sleep and Creativity

TypeinterventionalSponsorInsel Gruppe AG, University Hospital BernRan2021 to 2022Enrolled0ConditionsCreativity Performance in Healthy SubjectsArmsTranscranial Magnetic Stimulation (TMS) over the left inferior frontal gyrus (IFG), Transcranial Magnetic Stimulation (TMS) over the left inferior parietal lobule (IPL)
3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Caroline LustenbergerDepartment of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Michael R BoyleDepartment of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
A Alban FoulserDepartment of Psychology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Juliann M MellinDepartment of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Flavio FröhlichDepartment of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Neurobiology Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. Electronic address: flavio_frohlich@med.unc.edu.

Funding

Targeting Cortical Dynamics: Rational Design of Individualized Brain StimulationR01MH101547 · NIMH · UNIV OF NORTH CAROLINA CHAPEL HILL · PI FROHLICH, FLAVIO · 2013 to 2017
$2.2M
Targeting Auditory Hallucinations with Alternating Current StimulationR21MH105574 · NIMH · UNIV OF NORTH CAROLINA CHAPEL HILL · PI FROHLICH, FLAVIO, JARSKOG, LARS FREDRIK · 2015 to 2016
$478k
Multistable Dynamics of Connected Cortical Networks: Mechanisms and ModulationR21MH105557 · NIMH · UNIV OF NORTH CAROLINA CHAPEL HILL · PI FROHLICH, FLAVIO · 2014 to 2015
$401k
NIMH NIH HHS R01 MH101547NIMH NIH HHS R01MH101547NIMH NIH HHS R21 MH105557NIMH NIH HHS R21MH105557NIMH NIH HHS R21 MH105574NIMH NIH HHS R21MH105574
6 · The paper itself

Abstract

Creativity, the ability to produce innovative ideas, is a key higher-order cognitive function that is poorly understood. At the level of macroscopic cortical network dynamics, recent electroencephalography (EEG) data suggests that cortical oscillations in the alpha frequency band (8-12 Hz) are correlated with creative thinking. However, whether alpha oscillations play a functional role in creativity has remained unknown. Here we show that creativity is increased by enhancing alpha power using 10 Hz transcranial alternating current stimulation (10 Hz-tACS) of the frontal cortex. In a study of 20 healthy participants with a randomized, balanced cross-over design, we found a significant improvement of 7.4% in the Creativity Index measured by the Torrance Test of Creative Thinking (TTCT), a comprehensive and most frequently used assay of creative potential and strengths. In a second similar study with 20 subjects, 40 Hz-tACS was used instead of 10 Hz-tACS to rule out a general "electrical stimulation" effect. No significant change in the Creativity Index was found for such frontal 40 Hz stimulation. Our results suggest that alpha activity in frontal brain areas is selectively involved in creativity; this enhancement represents the first demonstration of specific neuronal dynamics that drive creativity and can be modulated by non-invasive brain stimulation. Our findings agree with the model that alpha recruitment increases with internal processing demands and is involved in inhibitory top-down control, which is an important requirement for creative ideation.

Indexed as

Alpha RhythmCognitionCreativityFrontal LobeThinkingAdolescentAdultCross-Over StudiesElectroencephalographyFemaleHumansMaleNeuropsychological TestsTranscranial Direct Current StimulationYoung AdultAlpha powerDivergent thinkingGamma activityTorrance Test of Creative Thinking (TTCT)Transcranial alternating current stimulation (tACS)

Identifiers

PMID25913062
PMCPMC4451406

What OpenQuestion holds

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Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.