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Primate hearing from a mammalian perspective.

Rickye S Heffner1

  • 1Department of Psychology, University of Toledo, Toledo, Ohio 43606, USA. rickye.heffner@utoledo.edu

The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology
|October 9, 2004
PubMed
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Primates exhibit typical mammalian hearing ranges and sound localization abilities, with smaller species hearing higher frequencies. This suggests sound localization is a key evolutionary pressure for primates and other mammals.

Area of Science:

  • Auditory Neuroscience
  • Comparative Biology
  • Primate Behavior

Background:

  • Primates, like other mammals, possess hearing sensitivity and sound localization abilities.
  • Understanding these auditory functions in primates provides insights into mammalian auditory evolution.

Purpose of the Study:

  • To review and compare primate hearing performance and sound localization with general mammalian patterns.
  • To explore selective pressures influencing primate auditory capabilities.

Main Methods:

  • Behavioral tests were used to assess hearing sensitivity and sound localization in primates.
  • Comparative analysis was conducted between primate auditory data and broader mammalian data.

Main Results:

Related Experiment Videos

  • Primates follow the mammalian trend where smaller species hear higher frequencies than larger ones.
  • Primate hearing sensitivity extends below 125 Hz, aligning with most mammals.
  • Primate sound localization acuity is relatively good, comparable to other mammals like cats and opossums.

    • Conclusions:

    • The restricted high-frequency hearing in humans is not evolutionarily unusual within the primate context.
    • Sound localization appears to be a significant selective pressure, particularly for smaller primates and mammals with short interaural distances.