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Titolo:
TOLERANCE TO SOUND INTENSITY OF BINAURAL COINCIDENCE DETECTION IN THENUCLEUS LAMINARIS OF THE OWL
Autore:
PENA JL; VIETE S; ALBECK Y; KONISHI M;
Indirizzi:
CALTECH,DIV BIOL 21676 PASADENA CA 91125 CALTECH,DIV BIOL 21676 PASADENA CA 91125
Titolo Testata:
The Journal of neuroscience
fascicolo: 21, volume: 16, anno: 1996,
pagine: 7046 - 7054
SICI:
0270-6474(1996)16:21<7046:TTSIOB>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERAURAL TIME DIFFERENCES; SUPERIOR OLIVARY COMPLEX; BRAIN-STEM; BARN OWL; INFERIOR COLLICULUS; NEURONS; RESPONSES; CAT; MAGNOCELLULARIS; INHIBITION;
Keywords:
ACOUSTIC LOCALIZATION; INTERAURAL TIME DIFFERENCE; SOUND INTENSITY; COINCIDENCE DETECTION; NUCLEUS LAMINARIS; OWL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
39
Recensione:
Indirizzi per estratti:
Citazione:
J.L. Pena et al., "TOLERANCE TO SOUND INTENSITY OF BINAURAL COINCIDENCE DETECTION IN THENUCLEUS LAMINARIS OF THE OWL", The Journal of neuroscience, 16(21), 1996, pp. 7046-7054

Abstract

Neurons of the owl's nucleus laminaris serve as coincidence detectorsfor measurement of interaural time difference. The discharge rate of nucleus laminaris neurons for both monaural and binaural stimulation increased with sound intensity until they reached an asymptote, Intensesounds affected neither the ratio between binaural and monaural responses nor the interaural time difference for which nucleus laminaris neurons were selective. Theoretical analysis showed that high afferent discharge rates cause coincidence detectors with only excitatory input to lose their selectivity for interaural time difference when coincidence of impulses from the same side becomes as likely as that of impulses from the two sides. We hypothesize that inhibitory input whose strength increases with sound intensity protects nucleus laminaris neuronsfrom losing their sensitivity to interaural time difference with intense sounds.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 18:09:48