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Titolo:
Release from masking in fluctuating background noise in a songbird's auditory forebrain
Autore:
Klump, GM; Nieder, A;
Indirizzi:
Tech Univ Munich, Inst Zool, D-85747 Garching, Germany Tech Univ Munich Garching Germany D-85747 ool, D-85747 Garching, Germany
Titolo Testata:
NEUROREPORT
fascicolo: 9, volume: 12, anno: 2001,
pagine: 1825 - 1829
SICI:
0959-4965(20010703)12:9<1825:RFMIFB>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
STARLINGS STURNUS-VULGARIS; SCENE ANALYSIS; SEGREGATION; BANDWIDTH;
Keywords:
auditory scene analysis; bird; CMR; hearing; release from masking; signal detection field;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Klump, GM Tech Univ Munich, Inst Zool, Lichtenbergstr 4, D-85747 Garching,Germany Tech Univ Munich Lichtenbergstr 4 Garching Germany D-85747 many
Citazione:
G.M. Klump e A. Nieder, "Release from masking in fluctuating background noise in a songbird's auditory forebrain", NEUROREPORT, 12(9), 2001, pp. 1825-1829

Abstract

Fluctuations in the ubiquitous masking background noise can be exploited by the vertebrate auditory system to considerably improve signal detection. Here we demonstrate neuronal masking release in amplitude-modulated background noise on the level of the European starling's auditory forebrain, an area that is the analogue of the mammalian primary auditory cortex. Tone-evoked responses in the presence of modulated and unmodulated maskers were recorded in unrestrained birds via radiotelemetry. Based on a rate code, the average amount of neuronal masking release was similar to that observed in a psychoacoustic study on the starling with stimuli confined to a single auditory tilter. The results suggest that the neurons exploited predominantly temporal features of the acoustic background to improve signal detection. NeuroReport 12:1825-1829 (C) 2001 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 01:11:24