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Titolo:
EARLY PAVLOVIAN CONDITIONING IMPAIRS LATER PAVLOVIAN CONDITIONING
Autore:
LARIVIERE NA; SPEAR NE;
Indirizzi:
SUNY BINGHAMTON,DEPT PSYCHOL,POB 6000 BINGHAMTON NY 13902 SUNY BINGHAMTON,DEPT PSYCHOL BINGHAMTON NY 13902 MONMOUTH COLL,DEPT PSYCHOL MONMOUTH IL 00000
Titolo Testata:
Developmental psychobiology
fascicolo: 7, volume: 29, anno: 1996,
pagine: 613 - 635
SICI:
0012-1630(1996)29:7<613:EPCILP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERSENSORY FUNCTION; RATS; ORGANIZATION; STIMULATION;
Keywords:
EARLY EXPERIENCE; EARLY LEARNING; INFANT LEARNING; COGNITIVE DEVELOPMENT; PREWEANLING; ONTOGENY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
48
Recensione:
Indirizzi per estratti:
Citazione:
N.A. Lariviere e N.E. Spear, "EARLY PAVLOVIAN CONDITIONING IMPAIRS LATER PAVLOVIAN CONDITIONING", Developmental psychobiology, 29(7), 1996, pp. 613-635

Abstract

Four experiments tested the effects in the rat of very early experience with stimuli to be used later for Pavlovian conditioning. Beginningon postnatal Day 12, prior to the development of substantial detection and effective perception of visual and auditory stimuli, rats were given five daily experiences with either lights or tones and a footshock known to be an effective unconditioned stimulus at these ages. Twenty-four hours after the last of these experiences, pairings of either the light or tone and the unconditioned stimulus were given with parameters established to yield a moderate degree of conditioning in untreated preweanlings (Experiment 1). Experiment 2 determined that early experience with paired or unpaired presentations of either the light or tone and the unconditioned stimulus resulted in a failure to condition to these same lights or tones on postnatal Day 17, although nontreatedpups from the same litters conditioned quite effectively. Experiment 3 determined that this early conditioning experience with either paired or unpaired presentations of the lights or tones and the unconditioned stimulus yielded impaired conditioning on postnatal Day 17 in the alternative sensory modality as well, although again nontreated siblings conditioned quite effectively. Experiment 4 replicated the results of each of Experiments 2 and 3 and determined in addition that despite the impairment in conditioning that resulted from early paired or unpaired experience with the stimuli of conditioning, early experience with the individual stimuli of conditioning-with only the CS, the US, or the context-did not result in a similar impairment in conditioning. Although the results were unexpected, they may be understood in part in terms of intersensory competition during development, and there is precedent in the literature for similar interfering effects of early learning on later learning in a variety of species. (C) 1996 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 15:23:04