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Stone tools, language and the brain in human evolution.

Dietrich Stout1, Thierry Chaminade

  • 1Department of Anthropology, Emory University, 1557 Dickey Drive, Atlanta, GA 30322, USA. dwstout@emory.edu

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|November 23, 2011
PubMed
Summary
This summary is machine-generated.

Exploring the evolutionary links between language, gesture, and tool use, this review examines neuroscientific evidence supporting functional overlap. It critically evaluates gestural and technological hypotheses for language origins, considering Palaeolithic technology insights.

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Area of Science:

  • Neuroscience
  • Evolutionary Anthropology
  • Linguistics

Background:

  • Evolutionary connections between language, gesture, and tool use are debated.
  • Neuroscience reveals functional and anatomical overlap in praxis, action understanding, and vocal language.
  • Alternative evolutionary hypotheses exist, including 'gestural' and 'technological' origins of language.

Purpose of the Study:

  • To review the current evidence for gestural and technological hypotheses of language origins.
  • To integrate findings from neuroscientific research on praxis, action understanding, and speech.
  • To examine neural correlates of Palaeolithic technology in the context of language evolution.

Main Methods:

  • Literature review of neuroscientific studies on praxis, action understanding, and vocal language.
  • Analysis of evidence supporting functional/anatomical overlap between behaviors.
  • Examination of neural bases of speech, tool use, and Palaeolithic technology.

Main Results:

  • Neuroscientific research provides support for functional/anatomical overlap between language, gesture, and tool use.
  • Significant differences and reasons for skepticism remain regarding specific evolutionary hypotheses.
  • Palaeolithic technology studies offer specific neural correlates relevant to language evolution.

Conclusions:

  • The evolutionary origins of language likely involve complex interactions between gestural and technological factors.
  • Further research integrating neuroscience, archaeology, and linguistics is needed.
  • Understanding the neural underpinnings of tool use and gesture is crucial for deciphering language evolution.