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Titolo:
A SENSORY-ENHANCED CONTEXT FACILITATES LEARNING AND MULTIPLE MEASURESOF UNCONDITIONED STIMULUS-PROCESSING IN THE PREWEANLING RAT
Autore:
BRASSER SM; SPEAR NE;
Indirizzi:
SUNY BINGHAMTON,DEPT PSYCHOL,CTR DEV PSYCHOBIOL BINGHAMTON NY 13902 SUNY BINGHAMTON,DEPT PSYCHOL,CTR DEV PSYCHOBIOL BINGHAMTON NY 13902
Titolo Testata:
Behavioral neuroscience
fascicolo: 1, volume: 112, anno: 1998,
pagine: 126 - 140
SICI:
0735-7044(1998)112:1<126:ASCFLA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACOUSTIC STARTLE REFLEX; INFANT VISUAL FIXATION; ULTRASONIC VOCALIZATION; ENVIRONMENTAL STIMULI; ONTOGENETIC CHANGES; BEHAVIORAL AROUSAL; SMALL RODENTS; HOME-NEST; PUPS; PRESTIMULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
63
Recensione:
Indirizzi per estratti:
Citazione:
S.M. Brasser e N.E. Spear, "A SENSORY-ENHANCED CONTEXT FACILITATES LEARNING AND MULTIPLE MEASURESOF UNCONDITIONED STIMULUS-PROCESSING IN THE PREWEANLING RAT", Behavioral neuroscience, 112(1), 1998, pp. 126-140

Abstract

This study tested the hypothesis that increased processing or efficacy of the unconditioned stimulus (US) contributes to the facilitation of trace conditioning that occurs when preweanling rats are conditionedin a novel sensory-rich context. Experiment 1 extended previous findings (D. L. McKinzie & N. E. Spear, 1995) of facilitated acoustic traceconditioning in the 17-day-old rat in a sensory-enhanced versus a home odor context. In the enhanced or more familiar context, Experiment 2tested rats of this age for degree of spontaneous locomotor activity and ultrasonic vocalizations, activity and ultrasounding in response to shock, and the acoustic startle reflex. The enhanced context resulted in a greater overall activity response to shock, increased ultrasounding to discrete shocks, and a sensitized latency to startle. The results suggest that enhanced US processing in a sensory-rich context is alikely contributor to its facilitative effect on infant learning.

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Documento generato il 23/01/20 alle ore 12:22:01