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Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality

Cooperation and competition are two ways of social interaction keys to life in society. Recent EEG-based hyperscanning studies reveal that cooperative and competitive interactions induce an increase in interbrain coupling. However, whether this interbrain coupling effect is just a reflection of inte...

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Autores principales: Barraza, Paulo, Pérez, Alejandro, Rodríguez, Eugenio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7406570/
https://www.ncbi.nlm.nih.gov/pubmed/32848670
http://dx.doi.org/10.3389/fnhum.2020.00295
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author Barraza, Paulo
Pérez, Alejandro
Rodríguez, Eugenio
author_facet Barraza, Paulo
Pérez, Alejandro
Rodríguez, Eugenio
author_sort Barraza, Paulo
collection PubMed
description Cooperation and competition are two ways of social interaction keys to life in society. Recent EEG-based hyperscanning studies reveal that cooperative and competitive interactions induce an increase in interbrain coupling. However, whether this interbrain coupling effect is just a reflection of inter-subject motor coordination or can also signal the type of social interaction is unknown. Here, we show that behavioral coordination and social interaction type can be distinguished according to the frequency of oscillation in which the brains are coupled. We use EEG to simultaneously measure the brain activity of pairs of subjects, while they were performing a visual cue-target task in a cooperative and competitive manner. Behavioral responses were quasi-simultaneous between subject pairs for both competitive and cooperative conditions, with faster average response times for the competitive condition. Concerning brain activity, we found increased interbrain coupling in theta band (3–7 Hz) during cooperation and competition, with stronger coupling during competitive interactions. This increase of interbrain theta coupling correlated with a decrease in reaction times of the dyads. Interestingly, we also found an increase in brain-to-brain coupling in gamma band (38–42 Hz) only during cooperative interactions. Unlike the theta coupling effect, the gamma interbrain coupling did not correlate with dyads’ reaction times. Taken together, these results suggest that theta interbrain coupling could be linked to motor coordination processes common to cooperative and competitive interactions, while gamma brain-to-brain coupling emerges as an electrophysiological marker of shared intentionality during cooperative interactions.
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spelling pubmed-74065702020-08-25 Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality Barraza, Paulo Pérez, Alejandro Rodríguez, Eugenio Front Hum Neurosci Neuroscience Cooperation and competition are two ways of social interaction keys to life in society. Recent EEG-based hyperscanning studies reveal that cooperative and competitive interactions induce an increase in interbrain coupling. However, whether this interbrain coupling effect is just a reflection of inter-subject motor coordination or can also signal the type of social interaction is unknown. Here, we show that behavioral coordination and social interaction type can be distinguished according to the frequency of oscillation in which the brains are coupled. We use EEG to simultaneously measure the brain activity of pairs of subjects, while they were performing a visual cue-target task in a cooperative and competitive manner. Behavioral responses were quasi-simultaneous between subject pairs for both competitive and cooperative conditions, with faster average response times for the competitive condition. Concerning brain activity, we found increased interbrain coupling in theta band (3–7 Hz) during cooperation and competition, with stronger coupling during competitive interactions. This increase of interbrain theta coupling correlated with a decrease in reaction times of the dyads. Interestingly, we also found an increase in brain-to-brain coupling in gamma band (38–42 Hz) only during cooperative interactions. Unlike the theta coupling effect, the gamma interbrain coupling did not correlate with dyads’ reaction times. Taken together, these results suggest that theta interbrain coupling could be linked to motor coordination processes common to cooperative and competitive interactions, while gamma brain-to-brain coupling emerges as an electrophysiological marker of shared intentionality during cooperative interactions. Frontiers Media S.A. 2020-07-30 /pmc/articles/PMC7406570/ /pubmed/32848670 http://dx.doi.org/10.3389/fnhum.2020.00295 Text en Copyright © 2020 Barraza, Pérez and Rodríguez. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Barraza, Paulo
Pérez, Alejandro
Rodríguez, Eugenio
Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality
title Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality
title_full Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality
title_fullStr Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality
title_full_unstemmed Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality
title_short Brain-to-Brain Coupling in the Gamma-Band as a Marker of Shared Intentionality
title_sort brain-to-brain coupling in the gamma-band as a marker of shared intentionality
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7406570/
https://www.ncbi.nlm.nih.gov/pubmed/32848670
http://dx.doi.org/10.3389/fnhum.2020.00295
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