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Effects of morphine, d-amphetamine, ...

Knealing, Todd William.

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Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior./
Author:	Knealing, Todd William.
Description:	109 p.
Notes:	Source: Dissertation Abstracts International, Volume: 63-06, Section: B, page: 2995.
Contained By:	Dissertation Abstracts International63-06B.
Subject:	Psychology, Behavioral. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3055926
ISBN:	0493710736

Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior.
Knealing, Todd William.

Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior. - 109 p.

Source: Dissertation Abstracts International, Volume: 63-06, Section: B, page: 2995.

Thesis (Ph.D.)--West Virginia University, 2002.

Two experiments examined the effects of morphine and d-amphetamine on behavior that was temporally organized under several schedule arrangements. Two body weights were assessed for each experiment. Experiment 1 made use of fixed-interval (FI) schedules, the peak procedure, and a two-key (free-operant psychophysical) procedure. Indexes of timing performance under each of these schedules were assessed and compared. Timing indexes were decreased by both drugs in the two-key procedure, but were not reliably altered in the peak procedure. Both drugs produced clear rate-dependent effects on behavior in both procedures. In Experiment 2, FI performance was assessed both alone and with a concurrently available variable-interval (VI) schedule to determine whether drugs would cause a pigeon to leave a potential source of reinforcement early in order to respond to a future source of reinforcement. Although reductions in the index of curvature were obtained, there was no clear difference in FI performance based on whether or not a VI schedule was concurrently available. The results of Experiment 1 are inconsistent with the theory of a sped-up pacemaker, but are consistent with explanations involving a decrease in attention. The data also are consistent with the rate-dependency hypothesis, which states that rates of responding following drug administration tend to be determined in large part by rates of responding under baseline conditions.

ISBN: 0493710736Subjects--Topical Terms:

1017677
Psychology, Behavioral.

Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior.
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245 1 0 $a Effects of morphine, d-amphetamine, and food deprivation on temporally organized behavior.
300 $a 109 p.
500 $a Source: Dissertation Abstracts International, Volume: 63-06, Section: B, page: 2995.
500 $a Chair: David W. Schaal.
502 $a Thesis (Ph.D.)--West Virginia University, 2002.
520 $a Two experiments examined the effects of morphine and d-amphetamine on behavior that was temporally organized under several schedule arrangements. Two body weights were assessed for each experiment. Experiment 1 made use of fixed-interval (FI) schedules, the peak procedure, and a two-key (free-operant psychophysical) procedure. Indexes of timing performance under each of these schedules were assessed and compared. Timing indexes were decreased by both drugs in the two-key procedure, but were not reliably altered in the peak procedure. Both drugs produced clear rate-dependent effects on behavior in both procedures. In Experiment 2, FI performance was assessed both alone and with a concurrently available variable-interval (VI) schedule to determine whether drugs would cause a pigeon to leave a potential source of reinforcement early in order to respond to a future source of reinforcement. Although reductions in the index of curvature were obtained, there was no clear difference in FI performance based on whether or not a VI schedule was concurrently available. The results of Experiment 1 are inconsistent with the theory of a sped-up pacemaker, but are consistent with explanations involving a decrease in attention. The data also are consistent with the rate-dependency hypothesis, which states that rates of responding following drug administration tend to be determined in large part by rates of responding under baseline conditions.
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