Probing the processing of facial expressions in monkeys via time perception and eye tracking

作     者：Xin-He Liu Lu Gan Zhi-Ting Zhang Pan-Ke Yu Ji Dai Xin-He Liu;Lu Gan;Zhi-Ting Zhang;Pan-Ke Yu;Ji Dai

作者机构：Shenzhen Technological Research Center for Primate Translational MedicineShenzhen-Hong Kong Institute of Brain ScienceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China CAS Key Laboratory of Brain Connectome and ManipulationBrain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Guangdong Provincial Key Laboratory of Brain Connectome and BehaviorShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Research Center for Medical Artificial IntelligenceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Zoological Research》 (动物学研究（英文）)

年 卷 期：2023年第44卷第5期

页      面：882-893页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：supported by the National Natural Science Foundation of China (U20A2017) Guangdong Basic and Applied Basic Research Foundation (2022A1515010134,2022A1515110598) Youth Innovation Promotion Association of Chinese Academy of Sciences (2017120) Shenzhen-Hong Kong Institute of Brain Science–Shenzhen Fundamental Research Institutions (NYKFKT2019009) Shenzhen Technological Research Center for Primate Translational Medicine (F-2021-Z99-504979) 

主　　题：Monkey Facial expression Time perception Eye-tracking Pupil size 

摘      要：Accurately recognizing facial expressions is essential for effective social ***-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 *** 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 *** faces also reliably induced divergent pupil contraction in response to different expressions,while human faces and scrambled monkey faces did ***,viewing patterns in the FST indicated that monkeys only showed bias toward emotional expressions upon observing monkey ***,masking the eye region marginally decreased the viewing duration for monkey faces but not for human *** 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.