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Titolo:
EFFECTS OF INTERAURAL DECORRELATION ON NEURAL AND BEHAVIORAL DETECTION OF SPATIAL CUES
Autore:
SABERI K; TAKAHASHI Y; KONISHI M; ALBECK Y; ARTHUR BJ; FARAHBOD H;
Indirizzi:
CALTECH,DIV BIOL PASADENA CA 91125
Titolo Testata:
Neuron (Cambridge, Mass.)
fascicolo: 4, volume: 21, anno: 1998,
pagine: 789 - 798
SICI:
0896-6273(1998)21:4<789:EOIDON>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY-NERVE DATA; COMPLEX BINAURAL STIMULI; BARN OWL; CROSS-CORRELATION; TIME DIFFERENCE; OPTIC TECTUM; COINCIDENCE DETECTION; SOUND LOCALIZATION; LOW-FREQUENCY; SPACE MAP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
50
Recensione:
Indirizzi per estratti:
Citazione:
K. Saberi et al., "EFFECTS OF INTERAURAL DECORRELATION ON NEURAL AND BEHAVIORAL DETECTION OF SPATIAL CUES", Neuron (Cambridge, Mass.), 21(4), 1998, pp. 789-798

Abstract

The detection of interaural time differences (ITDs) for sound localization critically depends on the similarity between the left and right ear signals (interaural correlation). We show that, like humans, owls can localize phantom sound sources well until the correlation declinesto a very low value, below which their performance rapidly deteriorates. Decreasing interaural correlation also causes the response of the owl's tectal auditory neurons to decline nonlinearly, with a rapid drop followed by a more gradual reduction. A detection-theoretic analysisof the statistical properties of neuronal responses could account forthe variance of behavioral responses as interaural correlation is decreased. Finally, cross-correlation analysis suggests that low interaural correlations cause misalignment of cross-correlation peaks across different frequencies, contributing heavily to the nonlinear decline inneural and ultimately behavioral performance.

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Documento generato il 10/07/20 alle ore 15:15:24