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Audiogram of the big brown bat (Eptesicus fuscus).
Koay, G; Heffner, H E; Heffner, R S.
Afiliación
  • Koay G; Department of Psychology, University of Toledo, OH 43606, USA. fac2622@uoft01.utoledo.edu
Hear Res ; 105(1-2): 202-10, 1997 Mar.
Article en En | MEDLINE | ID: mdl-9083817
The audiograms of three big brown bats (Eptesicus fuscus) were determined using a conditioned avoidance procedure. The average audiogram ranged from 0.850 kHz at 106 dB to 120 kHz at 83 dB SPL, with a best threshold of 7 dB at 20 kHz and a distinct decrease in sensitivity at 45 kHz. The results confirm those of a previous study by Dalland (1965a) that the big brown bat has good high-frequency hearing coupled with poor low-frequency hearing. Comparative analysis suggests that the bat's good high-frequency hearing initially evolved for passive sound localization and that it was later coopted for use in echolocation. In addition, the restricted low-frequency hearing of the big brown bat is typical of mammals with good high-frequency hearing.
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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Audiometría / Umbral Auditivo / Localización de Sonidos / Quirópteros Tipo de estudio: Etiology_studies Límite: Animals Idioma: En Revista: Hear Res Año: 1997 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Países Bajos
Buscar en Google
Añadir a Mi BVS
Imprimir
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PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Audiometría / Umbral Auditivo / Localización de Sonidos / Quirópteros Tipo de estudio: Etiology_studies Límite: Animals Idioma: En Revista: Hear Res Año: 1997 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Países Bajos