Evidence map›Paper›PMID 35365502›Full record

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Cooperative Behavior Evokes Interbrain Synchrony in the Prefrontal and Temporoparietal Cortex: A Systematic Review and Meta-Analysis of fNIRS Hyperscanning Studies.

Artur Czeszumski, Sophie Hsin-Yi Liang, Suzanne Dikker, Peter König, Chin-Pang Lee, Sander L Koole, Brent Kelsen

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in eNeuro. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

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

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  13. Social attachment shapes interbrain synchrony.bioRxiv : the preprint server for biology · 2026
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  14. Listening to a Consonant Chord Progression during Live Face-to-Face Gaze Enhances Neural Activity in Social Systems.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
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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

7 authors.

Artur CzeszumskiInstitute of Cognitive Science, Universität Osnabrück, Osnabrück, Germany 49074 brentntpu@gmail.com aczeszum@gmail.com.ORCID 0000-0002-5317-7948
Sophie Hsin-Yi LiangSection of Department of Child and Adolescent Psychiatry, Department of Psychiatry, Gung Memorial Hospital at Taoyuan, Chang, Taiwan 333.
Suzanne DikkerMax Planck-New York University Center for Language, Music and Emotion, New York, NY 10003.
Peter KönigInstitute of Cognitive Science, Universität Osnabrück, Osnabrück, Germany 49074.ORCID 0000-0003-3654-5267
Chin-Pang LeeSection of Department of Child and Adolescent Psychiatry, Department of Psychiatry, Gung Memorial Hospital at Taoyuan, Chang, Taiwan 333.
Sander L KooleDepartment of Clinical Psychology, Free University Amsterdam, Amsterdam, The Netherlands 1081.
Brent KelsenLanguage Center, National Taipei University, New Taipei City, Taiwan 106 brentntpu@gmail.com aczeszum@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Single-brain neuroimaging studies have shown that human cooperation is associated with neural activity in frontal and temporoparietal regions. However, it remains unclear whether single-brain studies are informative about cooperation in real life, where people interact dynamically. Such dynamic interactions have become the focus of interbrain studies. An advantageous technique in this regard is functional near-infrared spectroscopy (fNIRS) because it is less susceptible to movement artifacts than more conventional techniques like electroencephalography (EEG) or functional magnetic resonance imaging (fMRI). We conducted a systematic review and the first quantitative meta-analysis of fNIRS hyperscanning of cooperation, based on thirteen studies with 890 human participants. Overall, the meta-analysis revealed evidence of statistically significant interbrain synchrony while people were cooperating, with large overall effect sizes in both frontal and temporoparietal areas. All thirteen studies observed significant interbrain synchrony in the prefrontal cortex (PFC), suggesting that this region is particularly relevant for cooperative behavior. The consistency in these findings is unlikely to be because of task-related activations, given that the relevant studies used diverse cooperation tasks. Together, the present findings support the importance of interbrain synchronization of frontal and temporoparietal regions in interpersonal cooperation. Moreover, the present article highlights the usefulness of meta-analyses as a tool for discerning patterns in interbrain dynamics.

Indexed as

Brain MappingCooperative BehaviorBrainDiencephalonHumansPrefrontal CortexSpectroscopy, Near-InfraredcooperationfNIRShyperscanninginterbrain synchrony

Identifiers

PMID35365502
PMCPMC9014979

What OpenQuestion holds

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Registered trials

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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.