Reward Magnitude Effects on Temporal Discrimination

Autor/inn/en	Galtress, Tiffany; Kirkpatrick, Kimberly
Titel	Reward Magnitude Effects on Temporal Discrimination
Quelle	In: Learning and Motivation, 41 (2010) 2, S.108-124 (17 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0023-9690
DOI	10.1016/j.lmot.2010.01.002
Schlagwörter	Rewards; Experiments; Animals; Attention; Evaluation Methods; Time Factors (Learning); Classical Conditioning + Suchen Sie Ihr Suchwort? Reward; Belohnung; Erprobung; Animal; Tier; Tiere; Aufmerksamkeit
Abstract	Changes in reward magnitude or value have been reported to produce effects on timing behavior, which have been attributed to changes in the speed of an internal pacemaker in some instances and to attentional factors in other cases. The present experiments therefore aimed to clarify the effects of reward magnitude on timing processes. In Experiment 1, rats were trained to discriminate a short (2 s) vs. a long (8 s) signal followed by testing with intermediate durations. Then, the reward on short or long trials was increased from 1 to 4 pellets in separate groups. Experiment 2 measured the effect of different reward magnitudes associated with the short vs. long signals throughout training. Finally, Experiment 3 controlled for satiety effects during the reward magnitude manipulation phase. A general flattening of the psychophysical function was evident in all three experiments, suggesting that unequal reward magnitudes may disrupt attention to duration. (Contains 3 figures and 3 tables.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10