Pupil mimicry promotes trust through the theory-of-mind network

Description: The present fMRI–pupillometry study revealed that when the pupils of interacting partners synchronously dilate, trust is promoted, which suggests that pupil mimicry affiliates people. Here we provide evidence that pupil mimicry modulates trust decisions through the activation of the theory-of-mind network (precuneus, temporo-parietal junction, superior temporal sulcus, and medial prefrontal cortex). This network was recruited during pupil-dilation mimicry compared with interactions without mimicry or compared with pupil-constriction mimicry. Furthermore, the level of theory-of-mind engagement was proportional to individual’s susceptibility to pupil-dilation mimicry. These data reveal a fundamental mechanism by which an individual’s pupils trigger neurophysiological responses within an observer: when interacting partners synchronously dilate their pupils, humans come to feel reflections of the inner states of others, which fosters trust formation.

Related article: http://doi.org/10.1073/pnas.1803916115

View ID Name Type
Field Value
Compact Identifierhttps://identifiers.org/neurovault.collection:3965
Add DateJune 30, 2018, 7:14 p.m.
Uploaded byProchazkovae
Related article DOI10.1073/pnas.1803916115
Related article authorsEliska Prochazkova, Luisa Prochazkova, Michael Rojek Giffin, H. Steven Scholte, Carsten K. W. De Dreu and Mariska E. Kret
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