Journal
SCIENTIFIC REPORTS
Volume 9, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-019-49318-3
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Funding
- French National Research Agency [ANR-11-EQPX-0023]
- European funds through the program FEDER SCV-IrDIVE
- Portuguese Foundation for Science and Technology
- Portuguese Ministry of Science, Technology and Higher Education through the national funds (PIDDAC) [UID/PSI/01662/2019]
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We assessed the sympathetic and parasympathetic activation associated to the observation of Pantomime (i.e. the mime of the use of a tool) and Intransitive gestures (i.e. expressive) performed toward (e.g. a comb and thinking) and away from the body (e.g. key and come here) in a group of healthy participants while both pupil dilation (N=31) and heart rate variability (N=33; HF-HRV) were recorded. Large pupil dilation was observed in both Pantomime and Intransitive gestures toward the body; whereas an increase of the vagal suppression was observed in Intransitive gestures away from the body but not in those toward the body. Our results suggest that the space where people act when performing a gesture has an impact on the physiological responses of the observer in relation to the type of social communicative information that the gesture direction conveys, from a more intimate (toward the body) to a more interactive one (away from the body).
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