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Titolo:
Audiograms of five species of rodents: implications for the evolution of hearing and the perception of pitch
Autore:
Heffner, RS; Koay, G; Heffner, HE;
Indirizzi:
Univ Toledo, Dept Psychol, Toledo, OH 43606 USA Univ Toledo Toledo OH USA43606 oledo, Dept Psychol, Toledo, OH 43606 USA
Titolo Testata:
HEARING RESEARCH
fascicolo: 1-2, volume: 157, anno: 2001,
pagine: 138 - 152
SICI:
0378-5955(200107)157:1-2<138:AOFSOR>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
BAT ROUSETTUS-AEGYPTIACUS; SOUND LOCALIZATION; CUES; CHINCHILLAS; MECHANISMS; MAMMALS; NERVE; MAP; RAT; EAR;
Keywords:
audiogram; evolution; frequency coding; groundhog; chipmunk; leaf-eared mouse; hamster; spiny mouse;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Heffner, HE Univ Toledo, Dept Psychol, Toledo, OH 43606 USA Univ Toledo Toledo OH USA 43606 Psychol, Toledo, OH 43606 USA
Citazione:
R.S. Heffner et al., "Audiograms of five species of rodents: implications for the evolution of hearing and the perception of pitch", HEARING RES, 157(1-2), 2001, pp. 138-152

Abstract

Behavioral audiograms were determined for five species of rodents: groundhog (Marmota monax), Chipmunk (Tamias striatus), Darwin's leaf-cared mouse (Phyllotis darwinii), golden hamster (Mesocricetus auratus), and Egyptian spiny mouse (Acomys cahirinus). The high-frequency hearing of these animals was found to vary inversely with interaural distance, a typical mammalian pattern. With regard to low-frequency hearing, the animals fell into two groups: those with extended low-frequency hearing (chipmunks, groundhogs, and hamsters hear below 100 Hz) and those with restricted low-frequency hearing (spiny and leaf-eared mice do not hear appreciably below 1 kHz). An analysis of mammalian hearing reveals that the distribution of low-frequency hearing limits is bimodal with the two distributions separated by a gap from 125to 500 Hz. The correspondence of this dichotomy with studies of temporal coding raises the possibility that mammals that do not hear below 500 Hz do not use temporal encoding for the perception of pitch. (C) 2001 Published by Elsevier Science B.V.

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Documento generato il 05/12/20 alle ore 23:33:28