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タイトル: | Staring death in the face: chimpanzees' attention towards conspecific skulls and the implications of a face module guiding their behaviour |
著者: | Gonçalves, André Hattori, Yuko Adachi, Ikuma |
著者名の別形: | 服部, 裕子 足立, 幾磨 |
キーワード: | evolutionary comparative thanatology face perception face pareidolia |
発行日: | Mar-2022 |
出版者: | The Royal Society |
誌名: | Royal Society Open Science |
巻: | 9 |
号: | 3 |
論文番号: | 210349 |
抄録: | Chimpanzees exhibit a variety of behaviours surrounding their dead, although much less is known about how they respond towards conspecific skeletons. We tested chimpanzees' visual attention to images of conspecific and non-conspecific stimuli (cat/chimp/dog/rat), shown simultaneously in four corners of a screen in distinct orientations (frontal/diagonal/lateral) of either one of three types (faces/skulls/skull-shaped stones). Additionally, we compared their visual attention towards chimpanzee-only stimuli (faces/skulls/skull-shaped stones). Lastly, we tested their attention towards specific regions of chimpanzee skulls. We theorized that chimpanzee skulls retaining face-like features would be perceived similarly to chimpanzee faces and thus be subjected to similar biases. Overall, supporting our hypotheses, the chimpanzees preferred conspecific-related stimuli. The results showed that chimpanzees attended: (i) significantly longer towards conspecific skulls than other species skulls (particularly in forward-facing and to a lesser extent diagonal orientations); (ii) significantly longer towards conspecific faces than other species faces at forward-facing and diagonal orientations; (iii) longer towards chimpanzee faces compared with chimpanzee skulls and skull-shaped stones, and (iv) attended significantly longer to the teeth, similar to findings for elephants. We suggest that chimpanzee skulls retain relevant, face-like features that arguably activate a domain-specific face module in chimpanzees' brains, guiding their attention. |
記述: | Alas, poor Yorick! I knew him...: Chimpanzees show signs of recognition toward skulls of their own species. 京都大学プレスリリース. 2022-04-12. |
著作権等: | © 2022 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
URI: | http://hdl.handle.net/2433/286761 |
DOI(出版社版): | 10.1098/rsos.210349 |
PubMed ID: | 35345434 |
関連リンク: | https://www.kyoto-u.ac.jp/en/research-news/2022-04-12 |
出現コレクション: | 学術雑誌掲載論文等 |
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