Effects of an Activity-Based Anorexia Procedure on Within-Session Changes in Nose-Poke Responding

Autor/in	Aoyama, Kenjiro
Titel	Effects of an Activity-Based Anorexia Procedure on Within-Session Changes in Nose-Poke Responding
Quelle	In: Learning and Motivation, 43 (2012) 1-2, S.48-54 (7 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0023-9690
DOI	10.1016/j.lmot.2012.02.001
Schlagwörter	Control Groups; Body Weight; Physical Activities; Animals; Responses; Olfactory Perception; Reinforcement; Regression (Statistics); Eating Disorders + Suchen Sie Ihr Suchwort? Körpergewicht; Animal; Tier; Tiere; Positive Verstärkung; Regression; Regressionsanalyse; Appetite disorder; Essstörung
Abstract	This study tested the effects of an activity-based anorexia (ABA) procedure on within-session changes in responding. In the ABA group (N = 8), rats were given a 60-min feeding session and allowed to run in a running wheel for the remainder of each day. During the daily 60-min feeding session, each nose-poke response was reinforced by a food pellet. In the control group (N = 8), rats experienced the same procedure except that the wheel was locked and thus rats could not run. The experiment lasted for 6 days. Rats in the ABA group consumed less and lost more body weight than those in the control group. Within-session decreases in nose-poke responding were steeper for ABA than control rats. In addition, response rates were well described as linear functions of the cumulative number of reinforcers in both groups (r[superscript 2]s greater than 0.96). The regression lines for the ABA group had steeper slopes and smaller x-axis intercepts than those for the control group. However, the y-axis intercepts of the regression lines were similar for the two groups. These effects were different from the effects of taste-aversion learning induced by post-session wheel running (Aoyama, 2007), suggesting a different mechanism in each preparation. (Contains 1 table and 5 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10