Evidence map›Paper›PMID 34969856›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2022

Transcranial stimulation of alpha oscillations up-regulates the default mode network.

Kevin J Clancy, Jeremy A Andrzejewski, Yuqi You, Jens T Rosenberg, Mingzhou Ding, Wen Li

2 registry-linked trialsOpen access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
6.9field-weighted citation impact, top 2% of its field
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.

NCT07185451 narecruitingnot on this mapstarted 2025, after this paper: background citation

Efficacy and Safety of Transcranial Alternating Current Stimulation (tACS) Combined With Stable Medication in Adolescents With Depression: A Randomized, Double-Blind, Controlled Pilot Study

TypeinterventionalSponsorFirst Affiliated Hospital of Chongqing Medical UniversityRan2025 to 2027Enrolled30ConditionsDepression - Major Depressive DisorderArmstACS
NCT07185464 nanot yet recruitingnot on this mapstarted 2025, after this paper: background citation

Efficacy and Safety of Transcranial Alternating Current Stimulation (tACS) in Adolescents With First-episode Depression Who Are Drug-naive: A Randomized, Double-blind, Controlled Pilot Study

TypeinterventionalSponsorFirst Affiliated Hospital of Chongqing Medical UniversityRan2025 to 2026Enrolled30ConditionsDepression - Major Depressive DisorderArmstACS
3 · Its place in the literature

Who cites it

45 citing papers in PubMed, 74 citations in OpenAlex.

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  14. Functional Connectivity Is Dominated by Aperiodic, Rather Than Oscillatory, Coupling.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  20. Neuromodulation of Fear and Anxiety Circuits.Current topics in behavioral neurosciences · 2025
    Review
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

6 authors at 2 institutions in 1 country.

Kevin J ClancyDepartment of Psychology, Florida State University, Tallahassee, FL 32304; clancy@psy.fsu.edu wenli@psy.fsu.edu.ORCID 0000-0001-6581-357X
Jeremy A AndrzejewskiDepartment of Psychology, Florida State University, Tallahassee, FL 32304.
Yuqi YouDepartment of Psychology, Florida State University, Tallahassee, FL 32304.
Jens T RosenbergNational High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310.
Mingzhou DingJ. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL 32611.
Wen LiDepartment of Psychology, Florida State University, Tallahassee, FL 32304; clancy@psy.fsu.edu wenli@psy.fsu.edu.ORCID 0000-0003-1838-6135
Florida State University · USUniversity of Florida · US

Funding

Chemosensory Training Program (CTP)T32DC000044 · NIDCD · FLORIDA STATE UNIVERSITY · PI DEBRA Ann FADOOL · 1995 to 2026
$5.3M
Sensory Perception of Threat in AnxietyR01MH093413 · NIMH · UNIVERSITY OF WISCONSIN-MADISON · PI LI, WEN · 2012 to 2016
$1.8M
NIDCD NIH HHS T32 DC000044NIMH NIH HHS R01 MH093413
6 · The paper itself

Abstract

The default mode network (DMN) is the most-prominent intrinsic connectivity network, serving as a key architecture of the brain's functional organization. Conversely, dysregulated DMN is characteristic of major neuropsychiatric disorders. However, the field still lacks mechanistic insights into the regulation of the DMN and effective interventions for DMN dysregulation. The current study approached this problem by manipulating neural synchrony, particularly alpha (8 to 12 Hz) oscillations, a dominant intrinsic oscillatory activity that has been increasingly associated with the DMN in both function and physiology. Using high-definition alpha-frequency transcranial alternating current stimulation (α-tACS) to stimulate the cortical source of alpha oscillations, in combination with simultaneous electroencephalography and functional MRI (EEG-fMRI), we demonstrated that α-tACS (versus Sham control) not only augmented EEG alpha oscillations but also strengthened fMRI and (source-level) alpha connectivity within the core of the DMN. Importantly, increase in alpha oscillations mediated the DMN connectivity enhancement. These findings thus identify a mechanistic link between alpha oscillations and DMN functioning. That transcranial alpha modulation can up-regulate the DMN further highlights an effective noninvasive intervention to normalize DMN functioning in various disorders.

Indexed as

Default Mode NetworkUp-RegulationBrainBrain MappingElectroencephalographyFemaleHumansMagnetic Resonance ImagingMaleNerve NetTranscranial Direct Current StimulationYoung Adultalpha oscillationsDMNnoninvasive brain stimulationsimultaneous EEG-fMRItACS

Identifiers

PMID34969856
PMCPMC8740757
OpenAlexW4226322736

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.