Semin Hear 2007; 28(4): 319-326
DOI: 10.1055/s-2007-990718
© Thieme Medical Publishers

Evidence of Hyperacusis in Canaries with Permanent Hereditary High-Frequency Hearing Loss

Amanda M. Lauer1 , 3 , 4 , Robert J. Dooling2 , 3
  • 1Research Associate
  • 2Professor
  • 3Department of Psychology and Center for the Comparative and Evolutionary Biology of Hearing, University of Maryland, College Park, Maryland
  • 4Present address: Department of Otolaryngology, Johns Hopkins University, Baltimore, Maryland
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Publication History

Publication Date:
17 October 2007 (online)

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ABSTRACT

The mechanisms that underlie hyperacusis are poorly understood, due in part to the lack of a behavioral animal model. Traditional self-report methods used to measure loudness and loudness discomfort are not suitable for use with animals because the animals cannot provide subjective responses about the magnitude of an internal psychological perception. Instead, reaction time (RT) measures have been used in animals to estimate loudness perception. In the present study, the authors demonstrate that RTs are shorter at moderate and high sound levels in canaries of a strain with a hereditary high-frequency hearing loss than in normal canaries, indicating increased loudness. As far as we know, this is the first report of hyperacusis in a nonhuman animal and demonstrates that RT is a potentially useful measure in animal models of hyperacusis.

REFERENCES

Amanda M LauerPh.D. 

Dept. of Otolaryngology, Johns Hopkins University

720 Rutland Ave., 521 Traylor Research Building, Baltimore, M21205

Email: alauer2@jhmi.edu