What can voice and face convey？: Evolution of communication signals and emergence of human language

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  • Okanoya Kazuo
    Graduate School of Arts and Sciences, The University of Tokyo.

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  • 音声と表情が伝えるもの : コミュニケーション信号の進化

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Abstract

<p>  I introduce a set of hypotheses that might explain the emergence of language and affect in humans. Humans are unique among animals in that they can accumulate culture and invent novel adaptive niches. Based on the pre-adaptation theory of language evolution, I explain how language might came about from emotional vocalizations. Because language can express anything that are not necessarily grounded to reality, we need signals that are grounded. I suggest that facial and vocal expressions acted as honest signals that supported evolution of language. In conclusion, I make a point that when language loses backup of honest signals, human communication system could face to the danger of collapsing. This could be caused by advances of electric communication devises.</p>

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