Inter-brain synchronization occurs without physical co-presence during cooperative online gaming. Wikström, V., Saarikivi, K., Falcon, M., Makkonen, T., Martikainen, S., Putkinen, V., Cowley, B. U., & Tervaniemi, M. Neuropsychologia, 2022. jufo-2abstract bibtex Inter-brain synchronization during social interaction has been linked with several positive phenomena, including social closeness, cooperation, prosociality, and team performance. Whether inter-brain synchronization requires physical presence and observing the body of the other person is still unclear. We created an experiment in which physically isolated participants performed a collaborative coordination task in the form of a cooperative multiplayer game. We measured EEG from 42 subjects working together as pairs in the task. During the measurement, the only interaction between the participants happened through on-screen movement of a racing car, controlled by button presses of both participants working with distinct roles, either controlling the speed or the direction of the car. Pairs working together in the task were found to have elevated neural coupling in the alpha, beta, and gamma frequency bands, compared to performance matched false pairs. This result is in line with previous findings of increased inter-brain synchrony during interaction, and shows for the first time that inter-individual neural synchronization occurs during online real-time joint coordination without any physical co-presence or video and audio connection. Furthermore, elevated momentary gamma synchrony was associated with better performance within dyads and elevated mean alpha synchrony was associated with better mean performance across dyads. The novel paradigm, developed for the measurement of real-time performance, demonstrates that changes in synchrony can be observed continuously during interaction.
@article{wikstrom_inter-brain_2022,
title = {Inter-brain synchronization occurs without physical co-presence during cooperative online gaming},
volume = {in press},
copyright = {All rights reserved},
abstract = {Inter-brain synchronization during social interaction has been linked with several positive phenomena, including social closeness, cooperation, prosociality, and team performance. Whether inter-brain synchronization requires physical presence and observing the body of the other person is still unclear. We created an experiment in which physically isolated participants performed a collaborative coordination task in the form of a cooperative multiplayer game. We measured EEG from 42 subjects working together as pairs in the task. During the measurement, the only interaction between the participants happened through on-screen movement of a racing car, controlled by button presses of both participants working with distinct roles, either controlling the speed or the direction of the car. Pairs working together in the task were found to have elevated neural coupling in the alpha, beta, and gamma frequency bands, compared to performance matched false pairs. This result is in line with previous findings of increased inter-brain synchrony during interaction, and shows for the first time that inter-individual neural synchronization occurs during online real-time joint coordination without any physical co-presence or video and audio connection. Furthermore, elevated momentary gamma synchrony was associated with better performance within dyads and elevated mean alpha synchrony was associated with better mean performance across dyads. The novel paradigm, developed for the measurement of real-time performance, demonstrates that changes in synchrony can be observed continuously during interaction.},
journal = {Neuropsychologia},
author = {Wikström, Valtteri and Saarikivi, Katri and Falcon, Mari and Makkonen, Tommi and Martikainen, Silja and Putkinen, Vesa and Cowley, Benjamin Ultan and Tervaniemi, Mari},
year = {2022},
note = {jufo-2},
}
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We created an experiment in which physically isolated participants performed a collaborative coordination task in the form of a cooperative multiplayer game. We measured EEG from 42 subjects working together as pairs in the task. During the measurement, the only interaction between the participants happened through on-screen movement of a racing car, controlled by button presses of both participants working with distinct roles, either controlling the speed or the direction of the car. Pairs working together in the task were found to have elevated neural coupling in the alpha, beta, and gamma frequency bands, compared to performance matched false pairs. This result is in line with previous findings of increased inter-brain synchrony during interaction, and shows for the first time that inter-individual neural synchronization occurs during online real-time joint coordination without any physical co-presence or video and audio connection. Furthermore, elevated momentary gamma synchrony was associated with better performance within dyads and elevated mean alpha synchrony was associated with better mean performance across dyads. 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Whether inter-brain synchronization requires physical presence and observing the body of the other person is still unclear. We created an experiment in which physically isolated participants performed a collaborative coordination task in the form of a cooperative multiplayer game. We measured EEG from 42 subjects working together as pairs in the task. During the measurement, the only interaction between the participants happened through on-screen movement of a racing car, controlled by button presses of both participants working with distinct roles, either controlling the speed or the direction of the car. Pairs working together in the task were found to have elevated neural coupling in the alpha, beta, and gamma frequency bands, compared to performance matched false pairs. 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