ArticleZoological research2023
Probing the processing of facial expressions in monkeys via time perception and eye tracking.
Article in Zoological research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 11 citations in OpenAlex.
- Differential and Temporally Dynamic Involvement of Primate Amygdala Nuclei in Face Reality and Reward Information Processing.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- A Preprocessing Pipeline for Pupillometry Signal from Multimodal iMotion Data.Sensors (Basel, Switzerland) · 2025Article
- TAK-653 Reverses Core Depressive Symptoms in Chronic Stress-Induced Monkey Model.Biomedicines · 2025Article
- Inferring internal states across mice and monkeys using facial features.Nature communications · 2025Article
- Medium Spiny Neurons Mediate Timing Perception in Coordination with Prefrontal Neurons in Primates.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- A deep learning lightweight model for real-time captive macaque facial recognition based on an improved YOLOX model.Zoological research · 2025Article
- Neuronal Mechanisms Underlying Face Recognition in Non-human Primates.The Japanese psychological research · 2024Article
- Impact of letters to the editor and publications in 2023.Zoological research · 2024Article
- From beasts to bytes: Revolutionizing zoological research with artificial intelligence.Zoological research · 2023Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Accurately recognizing facial expressions is essential for effective social interactions. Non-human primates (NHPs) are widely used in the study of the neural mechanisms underpinning facial expression processing, yet it remains unclear how well monkeys can recognize the facial expressions of other species such as humans. In this study, we systematically investigated how monkeys process the facial expressions of conspecifics and humans using eye-tracking technology and sophisticated behavioral tasks, namely the temporal discrimination task (TDT) and face scan task (FST). We found that monkeys showed prolonged subjective time perception in response to Negative facial expressions in monkeys while showing longer reaction time to Negative facial expressions in humans. Monkey faces also reliably induced divergent pupil contraction in response to different expressions, while human faces and scrambled monkey faces did not. Furthermore, viewing patterns in the FST indicated that monkeys only showed bias toward emotional expressions upon observing monkey faces. Finally, masking the eye region marginally decreased the viewing duration for monkey faces but not for human faces. By probing facial expression processing in monkeys, our study demonstrates that monkeys are more sensitive to the facial expressions of conspecifics than those of humans, thus shedding new light on inter-species communication through facial expressions between NHPs and humans.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.