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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 Origin of speech ： ウィキペディア英語版 Origin of speech The origin of speech in ''Homo sapiens'' is a widely debated and controversial topic. The problems relate to humans' unprecedented use of the tongue, lips and vocal organs as instruments of communication. Other animals vocalise, but do not use the tongue to modulate sounds. ==Background== Although related to the more general problem of the origin of language, the evolution of distinctively human speech capacities has become a distinct and in many ways separate area of scientific research. The topic is a separate one because language is not necessarily spoken: it can equally be written or signed. Speech is in this sense optional, although it is the default modality for language. Uncontroversially, monkeys, apes and humans, like many other animals, have evolved specialised mechanisms for producing ''sound'' for purposes of social communication.〔Kelemen, G. (1963). Comparative anatomy and performance of the vocal organ in vertebrates. In R. Busnel (ed.), ''Acoustic behavior of animals.'' Amsterdam: Elsevier, pp. 489–521.〕 On the other hand, no monkey or ape uses its ''tongue'' for such purposes. Our species' unprecedented use of the tongue, lips and other moveable parts seems to place speech in a quite separate category, making its evolutionary emergence an intriguing theoretical challenge in the eyes of many scholars.〔 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「Origin of speech」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.