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Efficiency of coding in macaque vocal communication.

Stuart Semple1, Minna J Hsu, Govindasamy Agoramoorthy

  • 1Centre for Research in Evolutionary Anthropology, Roehampton University, London, UK.

Biology Letters
|January 29, 2010
PubMed
Summary
This summary is machine-generated.

The Formosan macaque

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Area of Science:

  • Primate communication
  • Animal vocalizations
  • Linguistics

Background:

  • Human language exhibits the 'law of brevity,' where frequent words are shorter.
  • This principle has not been previously tested in non-human animal vocal communication.

Purpose of the Study:

  • To investigate if the Formosan macaque's vocal repertoire follows the 'law of brevity.'
  • To determine if there's an inverse relationship between call duration and utterance rate in this species.

Main Methods:

  • Analysis of the vocal repertoire of the Formosan macaque (Macaca cyclopis).
  • Statistical examination of call duration and rate of utterance for each vocalization.

Main Results:

  • The Formosan macaque's vocalizations demonstrate an inverse relationship between call duration and frequency of use.
  • Shorter calls were found to be uttered at a higher rate, supporting the 'law of brevity'.

Conclusions:

  • The vocal communication system of the Formosan macaque shows evidence of coding efficiency.
  • This finding suggests a shared structural basis in coding systems between human language and primate vocalizations.