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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cooperative eye hypothesis ： ウィキペディア英語版 Cooperative eye hypothesis The cooperative eye hypothesis is a proposed explanation for the appearance of the human eye. It suggests that the eye's distinctive visible characteristics evolved to make it easier for humans to follow another's gaze while communicating or while working together on tasks.〔Michael Tomasello, Brian Hare, Hagen Lehmann and Josep Call (2007). Reliance on head versus eyes in the gaze following of great apes and human infants: the cooperative eye hypothesis. ''Journal of Human Evolution'' 52: 314-320 〕 ==Differences in primate eyes== Unlike other primates, human beings have eyes with a distinct colour contrast between the white sclera, the coloured iris, and the black pupil. This is due to a lack of pigment in the sclera. Other primates have pigmented sclera that are brown or dark in colour. There is also a higher contrast between human skin, sclera, and irises. Human eyes are also larger in proportion to body size, and are longer horizontally. Among primates, humans are the only ones where the outline of the eye and the position of the iris can be clearly seen.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cooperative eye hypothesis」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.