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Titolo:
A MODEL OF FREQUENCY TUNING IN THE BASILAR PAPILLA OF THE TOKAY GECKO, GEKKO-GECKO
Autore:
AUTHIER S; MANLEY GA;
Indirizzi:
TECH UNIV MUNICH,INST ZOOL,LICHTENBERGSTR 4 D-85747 GARCHING GERMANY TECH UNIV MUNICH,INST ZOOL D-85747 GARCHING GERMANY
Titolo Testata:
Hearing research
fascicolo: 1, volume: 82, anno: 1995,
pagine: 1 - 13
SICI:
0378-5955(1995)82:1<1:AMOFTI>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALLIGATOR LIZARD COCHLEA; GUINEA-PIG COCHLEA; HAIR-CELLS; TONOTOPIC ORGANIZATION; BUNDLES; STEREOCILIA; RESONANCE; SELECTIVITY; STIFFNESS; TILIQUA;
Keywords:
GECKO; LIZARD; TUNING MODEL; BASILAR PAPILLA; FREQUENCY TUNING; HEARING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
S. Authier e G.A. Manley, "A MODEL OF FREQUENCY TUNING IN THE BASILAR PAPILLA OF THE TOKAY GECKO, GEKKO-GECKO", Hearing research, 82(1), 1995, pp. 1-13

Abstract

This paper uses the quantitative details of the anatomy of the auditory papilla in the Tokay gecko Gekko gecko (as described in the companion paper) to make a quantitative model predicting the tonotopic organization of two of the three papillar areas. Assuming that hair-cell bundle stiffness is similar to that of other species, a model of resonance frequencies for the apical areas of the papilla was constructed, taking into account factors such as the number of hair cells per resonantunit, their bundle dimensions, the volume of the tectorial mass, etc. The model predicts that the apical pre- and postaxial areas, althoughanatomically adjacent, respond to different frequency ranges, a phenomenon not yet reported from any vertebrate. The model predicts that together, these areas respond best to frequencies between 1.1 and 5.3 kHz, close to the range found physiologically [Eatock et al. (1981) J. Comp. Physiol. 142, 203-218] (0.8 to 5 kHz) for the high-frequency range for this species. Only physiological experiments tracing responses to specific papillar nerve fibres can confirm or refute these interesting predictions of the model. The model also indicates that, compared to free-standing hair-cell bundles, the semi-isolated tectorial structures called sallets not only lower the range of characteristic frequencies but also increase the frequency selectivity of the attached hair eels.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 04:12:25