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Titolo:
Cochlear and neural delays for coincidence detection in owls
Autore:
Pena, JL; Viete, S; Funabiki, K; Saberi, K; Konishi, M;
Indirizzi:
CALTECH, Div Biol, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125CALTECH, Div Biol, Pasadena, CA 91125 USA Univ Calif Irvine, Dept Cognit Sci, Irvine, CA 92697 USA Univ Calif Irvine Irvine CA USA 92697 pt Cognit Sci, Irvine, CA 92697 USA
Titolo Testata:
JOURNAL OF NEUROSCIENCE
fascicolo: 23, volume: 21, anno: 2001,
pagine: 9455 - 9459
SICI:
0270-6474(200112)21:23<9455:CANDFC>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERAURAL TIME DIFFERENCE; BRAIN-STEM; BARN OWL; NUCLEUS LAMINARIS; AUDITORY-NERVE; INTENSITY; PHASE;
Keywords:
owl; nucleus laminaris; frequency tuning; coincidence detection; delay lines; sound localization; stereausis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Pena, JL CALTECH, Div Biol 216 76, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125 iol 216 76, Pasadena, CA 91125 USA
Citazione:
J.L. Pena et al., "Cochlear and neural delays for coincidence detection in owls", J NEUROSC, 21(23), 2001, pp. 9455-9459

Abstract

The auditory system uses delay lines and coincidence detection to measure the interaural time difference (ITD). Both axons and the cochlea could provide such delays. The stereausis theory assumes that differences in wave propagation time along the basilar membrane can provide the necessary delays, if the coincidence detectors receive input from fibers innervating different loci on the left and right basilar membranes. If this hypothesis were true, the left and right inputs to coincidence detectors should differ in their frequency tuning. The owl's nucleus laminaris contains coincidence detector neurons that receive input from the left and right cochlear nuclei. Monaural frequency-tuning curves of nucleus laminaris neurons showed small interaural differences. In addition, their preferred ITDs were not correlated with the interaural frequency mismatches. Instead, the preferred ITD of the neuron agrees with that predicted from the distribution of axonal delays. Thus, there is no need to invoke mechanisms other than neural delays to explain the detection of ITDs by the barn owl's laminaris neurons.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 20:25:34