Pupil dilation reflects the authenticity of received nonverbal vocalizations

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dc.contributor.authorCosme, Gonçalo
dc.contributor.authorRosa, Pedro Joel
dc.contributor.authorLima, César
dc.contributor.authorTavares, Vânia
dc.contributor.authorScott, Sophie
dc.contributor.authorChen, Sinead
dc.contributor.authorWilcockson, Thomas
dc.contributor.authorCrawford, Trevor
dc.contributor.authorPrata, Diana
dc.contributor.institutionHEI-LAB (FCT) - Digital Laboratories for Environments and Human Interactions
dc.date.issued2021
dc.descriptionScientific Reports
dc.description.abstractThe ability to infer the authenticity of other’s emotional expressions is a social cognitive process taking place in all human interactions. Although the neurocognitive correlates of authenticity recognition have been probed, its potential recruitment of the peripheral autonomic nervous system is not known. In this work, we asked participants to rate the authenticity of authentic and acted laughs and cries, while simultaneously recording their pupil size, taken as proxy of cognitive efort and arousal. We report, for the frst time, that acted laughs elicited higher pupil dilation than authentic ones and, reversely, authentic cries elicited higher pupil dilation than acted ones. We tentatively suggest the lack of authenticity in others’ laughs elicits increased pupil dilation through demanding higher cognitive efort; and that, reversely, authenticity in cries increases pupil dilation, through eliciting higher emotional arousal. We also show authentic vocalizations and laughs (i.e. main efects of authenticity and emotion) to be perceived as more authentic, arousing and contagious than acted vocalizations and cries, respectively. In conclusion, we show new evidence that the recognition of emotional authenticity can be manifested at the level of the autonomic nervous system in humans. Notwithstanding, given its novelty, further independent research is warranted to ascertain its psychological meaning.en
dc.description.statusNon peer reviewed
dc.formatapplication/pdf
dc.identifier.citationCosme , G , Rosa , P J , Lima , C , Tavares , V , Scott , S , Chen , S , Wilcockson , T , Crawford , T & Prata , D 2021 , ' Pupil dilation reflects the authenticity of received nonverbal vocalizations ' , Default journal .
dc.identifier.issn1646-3730
dc.language.isoeng
dc.publisherEdições Universitárias Lusófonas
dc.relation.ispartofDefault journal
dc.rightsopenAccess
dc.subjectPSICOLOGIA
dc.subjectPSICOFISIOLOGIA
dc.subjectEYE TRACKING
dc.subjectCOMUNICAÇÃO NÃO VERBAL
dc.subjectAUTENTICIDADE
dc.subjectMOVIMENTOS OCULARES
dc.subjectPSYCHOLOGY
dc.subjectPSYCHOPHYSIOLOGY
dc.subjectEYE TRACKING
dc.subjectNON-VERBAL COMMUNICATION
dc.subjectAUTHENTICITY
dc.subjectEYE MOVEMENTS
dc.titlePupil dilation reflects the authenticity of received nonverbal vocalizationsen

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