Document Detail

Hearing in American leaf-nosed bats. I: Phyllostomus hastatus.
MedLine Citation:
PMID:  12204353     Owner:  NLM     Status:  MEDLINE    
We determined the audiogram of Phyllostomus hastatus (the greater spear-nosed bat), a large, omnivorous American leaf-nosed bat native to Central and South America. A conditioned suppression/avoidance procedure with a fruit juice reward was used for testing. At an intensity of 60 dB sound pressure level (SPL re 20 microN/m(2)), the hearing range of P. hastatus extends from 1.8 to 105 kHz, with a best sensitivity of 1 dB SPL at 20 kHz. Both its high-frequency and low-frequency hearing are not unusual for a small mammal. Despite its use of low-intensity echolocation calls there was no evidence for unusual sensitivity to either the frequencies used for echolocation or to the main frequencies of its communication calls, suggesting no selective "tuning" of the audiogram. Its behavioral pure-tone thresholds are lower than the multi-unit thresholds in the inferior colliculus.
Gimseong Koay; Karen S Bitter; Henry E Heffner; Rickye S Heffner
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Hearing research     Volume:  171     ISSN:  0378-5955     ISO Abbreviation:  Hear. Res.     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2002-09-02     Completed Date:  2003-03-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7900445     Medline TA:  Hear Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  96-102     Citation Subset:  IM    
Department of Psychology, University of Toledo, 2801 Bancroft St., Toledo, OH 43606 USA.
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MeSH Terms
Acoustic Stimulation
Auditory Threshold / physiology
Behavior, Animal
Chiroptera / physiology*
Echolocation / physiology
Evoked Potentials, Auditory
Hearing / physiology*
Inferior Colliculi / physiology
Species Specificity
Grant Support

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