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Cosme, G., Rosa, P. J., Lima, C. F., Tavares, V. , Scott, S. K. , Chen, S....Prata, D. (2021). Pupil dilation reflects the authenticity of received nonverbal vocalizations. Scientific Reports. 11

G. Cosme et al.,  "Pupil dilation reflects the authenticity of received nonverbal vocalizations", in Scientific Reports, vol. 11, 2021

@article{cosme2021_1731964844853,
	author = "Cosme, G. and Rosa, P. J. and Lima, C. F. and Tavares, V.  and Scott, S. K.  and Chen, S. and Wilcockson, T. D. and Crawford, T. J. and Prata, D.",
	title = "Pupil dilation reflects the authenticity of received nonverbal vocalizations",
	journal = "Scientific Reports",
	year = "2021",
	volume = "11",
	number = "",
	doi = "10.1038/s41598-021-83070-x",
	url = "https://www.nature.com/srep/about"
}

TY  - JOUR
TI  - Pupil dilation reflects the authenticity of received nonverbal vocalizations
T2  - Scientific Reports
VL  - 11
AU  - Cosme, G.
AU  - Rosa, P. J.
AU  - Lima, C. F.
AU  - Tavares, V. 
AU  - Scott, S. K. 
AU  - Chen, S.
AU  - Wilcockson, T. D.
AU  - Crawford, T. J.
AU  - Prata, D.
PY  - 2021
SN  - 2045-2322
DO  - 10.1038/s41598-021-83070-x
UR  - https://www.nature.com/srep/about
AB  - The 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 effort and arousal. We report, for the first 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 effort; and that, reversely, authenticity in cries increases pupil dilation, through eliciting higher emotional arousal. We also show authentic vocalizations and laughs (i.e. main effects 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.
ER  -