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タイトル: Getting to the Bottom of Face Processing. Species-Specific Inversion Effects for Faces and Behinds in Humans and Chimpanzees (Pan Troglodytes)
著者: Kret, Mariska E.
Tomonaga, Masaki  KAKEN_id  orcid https://orcid.org/0000-0002-9319-6991 (unconfirmed)
著者名の別形: 友永, 雅己
発行日: 30-Nov-2016
出版者: Public Library of Science
誌名: PLOS ONE
巻: 11
号: 11
論文番号: e0165357
抄録: For social species such as primates, the recognition of conspecifics is crucial for their survival. As demonstrated by the ‘face inversion effect’, humans are experts in recognizing faces and unlike objects, recognize their identity by processing it configurally. The human face, with its distinct features such as eye-whites, eyebrows, red lips and cheeks signals emotions, intentions, health and sexual attraction and, as we will show here, shares important features with the primate behind. Chimpanzee females show a swelling and reddening of the anogenital region around the time of ovulation. This provides an important socio-sexual signal for group members, who can identify individuals by their behinds. We hypothesized that chimpanzees process behinds configurally in a way humans process faces. In four different delayed matching-to-sample tasks with upright and inverted body parts, we show that humans demonstrate a face, but not a behind inversion effect and that chimpanzees show a behind, but no clear face inversion effect. The findings suggest an evolutionary shift in socio-sexual signalling function from behinds to faces, two hairless, symmetrical and attractive body parts, which might have attuned the human brain to process faces, and the human face to become more behind-like.
著作権等: © 2016 Kret, Tomonaga. 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.
URI: http://hdl.handle.net/2433/218537
DOI(出版社版): 10.1371/journal.pone.0165357
PubMed ID: 27902685
出現コレクション:学術雑誌掲載論文等

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