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タイトル: | A horse's eye view: size and shape discrimination compared with other mammals. |
著者: | Tomonaga, Masaki https://orcid.org/0000-0002-9319-6991 (unconfirmed) Kumazaki, Kiyonori Camus, Florine Nicod, Sophie Pereira, Carlos Matsuzawa, Tetsuro |
著者名の別形: | 友永, 雅己 松沢, 哲郎 |
発行日: | 25-Nov-2015 |
出版者: | The Royal Society |
誌名: | Biology letters |
巻: | 11 |
号: | 11 |
論文番号: | 20150701 |
抄録: | Mammals have adapted to a variety of natural environments from underwater to aerial and these different adaptations have affected their specific perceptive and cognitive abilities. This study used a computer-controlled touchscreen system to examine the visual discrimination abilities of horses, particularly regarding size and shape, and compared the results with those from chimpanzee, human and dolphin studies. Horses were able to discriminate a difference of 14% in circle size but showed worse discrimination thresholds than chimpanzees and humans; these differences cannot be explained by visual acuity. Furthermore, the present findings indicate that all species use length cues rather than area cues to discriminate size. In terms of shape discrimination, horses exhibited perceptual similarities among shapes with curvatures, vertical/horizontal lines and diagonal lines, and the relative contributions of each feature to perceptual similarity in horses differed from those for chimpanzees, humans and dolphins. Horses pay more attention to local components than to global shapes. |
記述: | ウマの目からの眺め:ウマ、イルカ、チンパンジー、ヒトにおける図形知覚の比較. 京都大学プレスリリース. 2015-11-26. |
著作権等: | © 2015 The Author(s) Published by the Royal Society. The full-text file will be made open to the public on 25 November 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. この論文は著者最終稿です。内容が印刷版と異なることがありますので、引用の際には出版社版をご確認ご利用ください。This is the Accepted Author Manuscript. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/201998 |
DOI(出版社版): | 10.1098/rsbl.2015.0701 |
PubMed ID: | 26601679 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2015-11-26 |
出現コレクション: | 学術雑誌掲載論文等 |
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