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Titolo:
ACTIVITY OF PRIMARY AUDITORY NEURONS IN THE COCHLEAR GANGLION OF THE EMU DROMAIUS-NOVAEHOLLANDIAE - SPONTANEOUS DISCHARGE, FREQUENCY TUNING, AND PHASE-LOCKING
Autore:
MANLEY GA; KOPPL C; YATES GK;
Indirizzi:
TECH UNIV MUNCHEN WEIHENSTEPHAN,INST ZOOL,LICHTENBERGSTR 4 D-85747 GARCHING GERMANY UNIV WESTERN AUSTRALIA,DEPT PHYSIOL NEDLANDS WA 6009 AUSTRALIA
Titolo Testata:
The Journal of the Acoustical Society of America
fascicolo: 3, volume: 101, anno: 1997,
pagine: 1560 - 1573
SICI:
0001-4966(1997)101:3<1560:AOPANI>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
INFRASOUND SENSITIVE NEURONS; STARLING STURNUS-VULGARIS; RATE-INTENSITY-FUNCTIONS; BASILAR PAPILLA; PRIMARY AFFERENTS; NERVE FIBERS; PREFERRED INTERVALS; ACTIVITY PATTERNS; SINGLE FIBERS; BARN OWL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
76
Recensione:
Indirizzi per estratti:
Citazione:
G.A. Manley et al., "ACTIVITY OF PRIMARY AUDITORY NEURONS IN THE COCHLEAR GANGLION OF THE EMU DROMAIUS-NOVAEHOLLANDIAE - SPONTANEOUS DISCHARGE, FREQUENCY TUNING, AND PHASE-LOCKING", The Journal of the Acoustical Society of America, 101(3), 1997, pp. 1560-1573

Abstract

The spontaneous and pure-tone sound-driven activity of primary auditory units was recorded in the cochlear ganglion of emu chicks aged between post-hatching days 1 and 14. Spontaneous activity tended to increase both with the chick's age and as a function of the unit's characteristic frequency (CF). The CF of 887 units ranged from 0.04 to 4 kHz, the thresholds down to 0 dB SPL. Although the CF range did not change, the thresholds improved with age during the first two weeks after hatching, by up to 18 dB at the highest frequencies. The threshold spread between units of similar CF in single animals was up to 60 dB. Rate-threshold tuning-curve symmetry varied with CF. In low-frequency units, the slope of the low-frequency tuning-curve flank was on average steeper than the high-frequency flank, whereas for high-frequency units, the reverse was true. Units of CF > 0.5 kHz generally showed low-frequency ''tails'' similar to those seen in mammalian primary auditory fibers. The mean tuning-curve frequency selectivity increased with CF. For units of CF > 0.2 kHz, thresholds were moderately correlated with tuning-curve frequency selectivity. Significant phase locking was observedup to about 4 kHz, the corner frequency of phase locking being at 1.15 kHz. (C) 1997 Acoustical Society of America.

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Documento generato il 05/12/20 alle ore 01:40:40