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Titolo:
DISCRIMINATION-TRAINING IN A GO NOGO-PROCEDURE ALTERS THE 2-DEOXYGLUCOSE PATTERN IN THE STARLINGS FOREBRAIN/
Autore:
SCHARMANN MG; KLUMP GM; EHRET G;
Indirizzi:
TECH UNIV MUNICH,INST ZOOL,LICHTENBERGSTR 4 D-85747 GARCHING GERMANY UNIV ULM,VERGLEICHENDE NEUROBIOL ABT D-89069 ULM GERMANY
Titolo Testata:
Brain research
fascicolo: 1-2, volume: 682, anno: 1995,
pagine: 83 - 92
SICI:
0006-8993(1995)682:1-2<83:DIAGNA>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
RECEPTIVE-FIELD PLASTICITY; AVIAN AUDITORY FOREBRAIN; LONG-TERM HABITUATION; TONOTOPIC ORGANIZATION; FREQUENCY DISCRIMINATION; STURNUS-VULGARIS; FUNCTIONAL-ORGANIZATION; GABAERGIC INHIBITION; INFERIOR COLLICULUS; CORTEX;
Keywords:
SONGBIRD; AUDITORY LEARNING; ATTENTION; HABITUATION; 2-DEOXYGLUCOSE; CAUDAL AUDITORY TELENCEPHALON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
48
Recensione:
Indirizzi per estratti:
Citazione:
M.G. Scharmann et al., "DISCRIMINATION-TRAINING IN A GO NOGO-PROCEDURE ALTERS THE 2-DEOXYGLUCOSE PATTERN IN THE STARLINGS FOREBRAIN/", Brain research, 682(1-2), 1995, pp. 83-92

Abstract

European starling's (Sturnus vulgaris L.) were used to measure differences in the glucose metabolism in the auditory forebrain between birds performing an auditory discrimination task and birds habituated to the same acoustic stimuli. One group (n = 5) of individuals was trainedin an operant GO/NOGG-procedure to report 1-kHz tone signals in a background of 4-kHz stimuli. The other group (n=5) was habituated to the experimental set-up and to the same sequence of tones presented to thetrained birds. [C-14]2-deoxyglucose (2DG) uptake was determined in the caudal auditory telencephalon and the nucleus ovoidalis of well trained and habituated birds by autoradiography of brain sections. The tissue areas having grey values above predefined threshold values of labelling were determined in every brain section of each bird and then combined to volumes of labelled tissue. No significant differences of the2DG uptake in the nucleus ovoidalis were found between the two experimental groups. In the caudal auditory telencephalon, however, significant differences in 2DG-labelling were found. In the trained birds, thelabelling in the caudal auditory telencephalon was confined to smaller brain regions than in the habituated birds. These results suggest a differential processing of sounds in the trained and habituated birds which is discussed in the context of sharpening of the frequency representation by GABAergic inhibition and processes of attention.

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Documento generato il 02/12/20 alle ore 05:21:55