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Titolo:
Extension of the CS past the US can facilitate conditioning of the rabbit's nictitating membrane response
Autore:
Kehoe, EJ;
Indirizzi:
Univ New S Wales, Sch Psychol, Sydney, NSW 2052, Australia Univ New S Wales Sydney NSW Australia 2052 l, Sydney, NSW 2052, Australia
Titolo Testata:
BEHAVIOURAL PROCESSES
fascicolo: 2-3, volume: 50, anno: 2000,
pagine: 155 - 164
SICI:
0376-6357(20000817)50:2-3<155:EOTCPT>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNCONDITIONED STIMULI; LATENT INHIBITION; ACQUISITION; MODULATION; EYEBLINK; MODEL;
Keywords:
conditioned response; nictitating membrane; rabbit;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Kehoe, EJ Univ New S Wales, Sch Psychol, Sydney, NSW 2052, Australia Univ New S Wales Sydney NSW Australia 2052 NSW 2052, Australia
Citazione:
E.J. Kehoe, "Extension of the CS past the US can facilitate conditioning of the rabbit's nictitating membrane response", BEHAV PROC, 50(2-3), 2000, pp. 155-164

Abstract

Five experiments were conducted in which the onset of a tone conditioned stimulus (CS) preceded the unconditioned stimulus (US) by 500 ms. Across experiments, the offset of the CS was extended past the offset of the US by values ranging from 0 ms to 40000 ms. Extensions of the CS of 2000 ms or greater produced acquisition of a conditioned response (CR) that was as fast orfaster than in the no-extension condition (0 ms). While extension of a forward tone CS after the US enhanced excitatory conditioning, insertion of another CS(light) in a purely backward relationship with the US passed only aretardation test, indicative of latent inhibition, and not a summation test needed for conditioned inhibition. The results add to the evidence that excitatory and inhibitory processes are both engaged following US offset. Alternative theories of CS processing are discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 21:35:45