Interstimulus Interval and Delivery Cues Influence Timed Conditioned Responding in Rats

Autor/inn/en	Williams, Douglas A.; Chubala, Chrissy M.; Mather, Amber A.; Johns, Kenneth W.
Titel	Interstimulus Interval and Delivery Cues Influence Timed Conditioned Responding in Rats
Quelle	In: Learning and Motivation, 40 (2009) 4, S.394-407 (14 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0023-9690
DOI	10.1016/j.lmot.2009.07.001
Schlagwörter	Cues; Intervals; Reaction Time; Food; Predictor Variables; Conditioning; Animals; Animal Behavior; Experiments; Learning Processes; Responses; Associative Learning; Time Factors (Learning) + Suchen Sie Ihr Suchwort? Stichwort; Reaktionsvermögen; Lebensmittel; Prädiktor; Animal; Tier; Tiere; Tierverhalten; Erprobung; Learning process; Lernprozess
Abstract	Appetitive contextual excitation supported by intertrial unconditioned stimuli was more easily overcome by timed conditioned responding in rats using quiet (Experiment 1) rather than noisy (Experiment 2) food pellet deliveries. Head-entry responding in acquisition peaked above the contextual baseline when pellet delivery occurred 10, 30, 60, or 90 s after the onset of the 120-s white-noise conditioned stimulus (CS). Special tests in extinction revealed CS onset and offset were conditioned by pellet delivery at 0 and 120 s, respectively. Responding was not undermined in Experiment 3 when noisy pellet deliveries replaced quiet pellet deliveries. Our results suggest that micro-stimuli occasioned at different times during the CS are vulnerable to overshadowing, but do not lose strength if they are already predictive. (Contains 4 figures and 1 table.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10