Teams on the same wavelength perform better: Inter-brain phase synchronization constitutes a neural substrate for social facilitation

Szymanski, Caroline; Pesquita, Ana; Brennan, Allison; Perdikis, D.; Enns, James T.; Brick, Timothy R.; Müller, Viktor; Lindenberger, Ulman

doi:10.1016/j.neuroimage.2017.03.013

Cited by 103 publications

(66 citation statements)

References 49 publications

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“…In contrast to these mutual gaze experiments, Szymanski et al (2017b) compared individual performance with a joint performance during a visual search task. Here, the interaction between subjects was much more natural since verbal, gestural, and tactile communication could be used freely.…”

Section: Action Representation and Joint Attentionmentioning

confidence: 99%

Hyperscanning: A Valid Method to Study Neural Inter-brain Underpinnings of Social Interaction

Czeszumski

Eustergerling

Lang

et al. 2020

Front. Hum. Neurosci.

271

239

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Social interactions are a crucial part of human life. Understanding the neural underpinnings of social interactions is a challenging task that the hyperscanning method has been trying to tackle over the last two decades. Here, we review the existing literature and evaluate the current state of the hyperscanning method. We review the type of methods (fMRI, M/EEG, and fNIRS) that are used to measure brain activity from more than one participant simultaneously and weigh their pros and cons for hyperscanning. Further, we discuss different types of analyses that are used to estimate brain networks and synchronization. Lastly, we present results of hyperscanning studies in the context of different cognitive functions and their relations to social interactions. All in all, we aim to comprehensively present methods, analyses, and results from the last 20 years of hyperscanning research.

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Section: Action Representation and Joint Attentionmentioning

confidence: 99%

Hyperscanning: A Valid Method to Study Neural Inter-brain Underpinnings of Social Interaction

Czeszumski

Eustergerling

Lang

et al. 2020

Front. Hum. Neurosci.

271

239

View full text Add to dashboard Cite

show abstract

“…Research on group benefits in joint visual tasks has investigated a number of factors that influence if, and to what extent, groups can outperform individuals (Bahrami et al, 2010;Brennan et al, 2008;Brennan and Enns, 2015b,a;Szymanski et al, 2017;Wahn et al, 2017Wahn et al, , 2018a. A prominent factor is the availability of information about the co-actors' actions (Brennan et al, 2008;Neider et al, 2010;Wahn et al, 2016cWahn et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

Dyadic and triadic search: Benefits, costs, and predictors of group performance

Wahn

Czeszumski

Labusch

et al. 2020

Atten Percept Psychophys

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In daily life, humans often perform visual tasks, such as solving puzzles or searching for a friend in a crowd. Performing these visual searches jointly with a partner can be beneficial: The two task partners can devise effective division of labour strategies and thereby outperform individuals who search alone. To date, it is unknown whether these group benefits scale up to triads or whether the cost of coordinating with others offsets any potential benefit for group sizes above two. To address this question, we compare participants' performance in a visual search task that they perform either alone, in dyads, or in triads. When the search task is performed jointly, co-actors receive information about each other's gaze location. After controlling for speed-accuracy trade-offs, we found that triads searched faster than dyads, suggesting that group benefits do scale up to triads. Moreover, we found that the triads' divided the search space in accordance with the co-actors' individual search performances but searched less efficiently than dyads. We also present a linear model to predict group benefits, which accounts for 70% of the variance. The model includes our experimental factors and a set of non-redundant predictors, quantifying the similarities in the individual performances, the collaboration between co-actors, and the estimated benefits that co-actors would attain without collaborating. Overall, the present study demonstrates that group benefits scale up to larger group sizes, but the additional gains are attenuated by the increased costs associated with devising effective division of labour strategies.

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“…Collective benefits have been investigated in a wide variety of tasks such as joint visuomotor tasks [7][8][9][10][11][12][13][14], joint visuospatial tasks [4,[15][16][17][18][19], joint memory [20,21], or joint perceptual decision-making tasks [5,[22][23][24][25][26][27]. Researchers found several factors that affect whether groups can outperform individuals and to what extent.…”

Section: Introductionmentioning

confidence: 99%

Performance similarities predict collective benefits in dyadic and triadic joint visual search

Wahn¹,

Czeszumski²,

König³

2017

Preprint

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When humans perform tasks together, they may reach a higher performance in comparison to the best member of a group (i.e., a collective benefit). Earlier research showed that interindividual performance similarities predict collective benefits for several joint tasks. It is unknown whether this is also the case for joint visuospatial tasks. Moreover, it is unknown whether dyads and triads reach a collective benefit when they are not allowed to exchange any information while performing a visuospatial task. In this study, participants performed a joint visual search task either alone, in dyads, or triads, and were not allowed to exchange any information while performing the task. We found that dyads reached a collective benefit while this was not the case for triads. That is, dyads do outperform individuals but triads do not outperform dyads. Nonetheless, similarities in performance significantly predicted the collective benefit for dyads and triads. In addition, we find that the dyads’ and triads’ search performances closely match a simulated performance based on the individual search performances, which assumed that members of a group act independently. Overall, present findings further support the view that similarities in performance could be a general predictor for collective benefits in joint tasks.

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Teams on the same wavelength perform better: Inter-brain phase synchronization constitutes a neural substrate for social facilitation

Cited by 103 publications

References 49 publications

Hyperscanning: A Valid Method to Study Neural Inter-brain Underpinnings of Social Interaction

Hyperscanning: A Valid Method to Study Neural Inter-brain Underpinnings of Social Interaction

Dyadic and triadic search: Benefits, costs, and predictors of group performance

Performance similarities predict collective benefits in dyadic and triadic joint visual search

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