ArticleSocial cognitive and affective neuroscience2024
Pupil dilation reflects the social and motion content of faces.
Article in Social cognitive and affective neuroscience, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Presence of a human catcher affects performance in a ball-throwing task.Experimental brain research · 2026Article
- Covert neural and autonomic signatures of shared perception.Social cognitive and affective neuroscience · 2026Article
- Visual Speech Reduces Cognitive Effort as Measured by EEG Theta Power and Pupil Dilation.eNeuro · 2025Article
- Emotional contagion to vocal smile revealed by combined pupil reactivity and motor resonance.Scientific reports · 2024Article
- Motion Processing in ASD: From Low-Level Information to Higher-Level Social Information.Wiley interdisciplinary reviews. Cognitive scienceReview
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5 authors.
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Abstract
Human facial features (eyes, nose, and mouth) allow us to communicate with others. Observing faces triggers physiological responses, including pupil dilation. Still, the relative influence of social and motion content of a visual stimulus on pupillary reactivity has never been elucidated. A total of 30 adults aged 18-33 years old were recorded with an eye tracker. We analysed the event-related pupil dilation in response to stimuli distributed along a gradient of social salience (non-social to social, going from objects to avatars to real faces) and dynamism (static to micro- to macro-motion). Pupil dilation was larger in response to social (faces and avatars) compared to non-social stimuli (objects), with surprisingly a larger response for avatars. Pupil dilation was also larger in response to macro-motion compared to static. After quantifying each stimulus' real quantity of motion, we found that the higher the quantity of motion, the larger the pupil dilated. However, the slope of this relationship was not higher for social stimuli. Overall, pupil dilation was more sensitive to the real quantity of motion than to the social component of motion, highlighting the relevance of ecological stimulations. Physiological response to faces results from specific contributions of both motion and social processing.
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