![]() Like humans, great apes such as gorillas ( Gorilla spp.), orangutans ( Pongo spp.), bonobos ( Pan paniscus), and chimpanzees ( Pan troglodytes) frequently exhibit social staring behavior, defined as prolonged gazing by one individual at another when both are in close proximity to each other, in various social contexts,. ![]() In humans, mutual gaze or eye contact plays a critical role in regulating social interactions by providing information and expressing intimacy (for a review, see ). Gaze perception is one of the most critical social–cognitive abilities possessed by primates, including humans. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.įunding: Grants-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan Society for the Promotion of Science (JSPS) (12002009, 13610086, 16002001, 16300084, 19300091, 20002001) and by MEXT Grants-in-Aid for the 21st Century COE Programs (A14 and D10) and global COE Programs (A06 and D07). Received: SeptemAccepted: JanuPublished: February 9, 2010Ĭopyright: © 2010 Tomonaga, Imura. PLoS ONE 5(2):Įditor: Nathan Jon Emery, Queen Mary University of London, United Kingdom Citation: Tomonaga M, Imura T (2010) Visual Search for Human Gaze Direction by a Chimpanzee ( Pan troglodytes).
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