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Related Experiment Videos

Aging and middle ear function in rhesus monkeys (Macaca mulatta).

P Torre1, R E Lasky, C G Fowler

  • 1Department of Communicative Disorders, University of Wisconsin-Madison, 53706, USA.

Audiology : Official Organ of the International Society of Audiology
|January 5, 2002
PubMed
Summary

Rhesus monkeys show similar middle ear function to humans, supporting their use as a model for human auditory studies. Male monkeys exhibited higher acoustic admittance and ear canal volume than females.

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Area of Science:

  • Auditory Science
  • Comparative Physiology
  • Primate Research

Background:

  • Limited data exists on middle ear function in rhesus monkeys.
  • Understanding rhesus monkey auditory function is crucial for their use as a biomedical model.
  • Previous research has not extensively detailed tympanometric parameters in this species.

Purpose of the Study:

  • To provide tympanometric data for rhesus monkeys (Macaca mulatta).
  • To assess the suitability of rhesus monkeys as a model for human peripheral auditory function.
  • To investigate age and sex effects on middle ear parameters in rhesus monkeys.

Main Methods:

  • Measurement of peak acoustic admittance (Ytm) and ear-canal volume (Vea) in adult rhesus monkeys.
  • Measurement of middle ear resonance frequency in adult rhesus monkeys.

Related Experiment Videos

  • Comparison of tympanometric data between younger and older adult monkeys, and between sexes.

    • Main Results:

    • Overall tympanometric values (Ytm, Vea, resonance frequency) in rhesus monkeys were comparable to humans, particularly human children.
    • Male monkeys demonstrated significantly larger peak Ytm and Vea than female monkeys, mirroring human findings.
    • Trends for decreased Ytm and Vea in older monkeys were observed but did not reach statistical significance.

    Conclusions:

    • Rhesus monkeys serve as a valuable model for human peripheral auditory function.
    • Tympanometric data in rhesus monkeys closely resembles that of humans, especially children.
    • Sex, but not age, significantly influences specific middle ear parameters in rhesus monkeys.