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Related Experiment Video

Updated: Jul 2, 2025

How to Calculate and Validate Inter-brain Synchronization in a fNIRS Hyperscanning Study

How to Calculate and Validate Inter-brain Synchronization in a fNIRS Hyperscanning Study

Published on: September 8, 2021

Using interbrain synchrony to study teamwork: A systematic review and meta-analysis.

Coralie Réveillé¹, Grégoire Vergotte¹, Stéphane Perrey¹

¹EuroMov Digital Health in Motion (Univ Montpellier, IMT Mines d'Alès), 700 avenue du Pic Saint Loup, Montpellier 34090, France.

Neuroscience and Biobehavioral Reviews

|February 19, 2024

Summary

Interbrain synchrony (IBS) positively correlates with teamwork input, process, and output. This review synthesizes hyperscanning data, supporting IBS as a key measure for understanding team dynamics and performance.

Keywords:

Collaboration Cooperation Dyad EEG Hyperscanning IPO model Input-process-output Performance Synchronization Team fMRI fNIRS

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Last Updated: Jul 2, 2025

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Area of Science:

Cognitive Neuroscience
Social Psychology
Human-Computer Interaction

Background:

Interbrain synchrony (IBS) is hypothesized to explain neural mechanisms in teamwork.
Hyperscanning studies offer insights into IBS within team settings.
A comprehensive review is needed to synthesize these findings for teamwork research.

Approach:

Conducted a systematic review following PRISMA guidelines.
Classified 41 included studies (from 229 initial) using the Input-Process-Output (IPO) model of teamwork.
Performed three multi-level meta-analyses to quantify IBS associations with IPO variables.

Key Points:

Meta-analyses revealed statistically significant positive associations between IBS and all three IPO teamwork variables.
The findings indicate that higher interbrain synchrony is linked to better team functioning across input, process, and output stages.
This study included data from 1326 teams, strengthening the generalizability of the results.

Conclusions:

Interbrain synchrony (IBS) is a valid and relevant measure for assessing teamwork processes.
The results support the continued utilization of IBS in hyperscanning research to investigate team dynamics.
This work provides a quantitative synthesis of IBS research in the context of teamwork.