Abstract
The influence of d-amphetamine on timing in pigeons was examined with a production procedure. Birds were trained with a fixed time schedule in which food reinforcement was contingent on the first response made after a duration signal had appeared for 30 s. Probe tests involved trials in which the duration signal was extended to 90 s and reinforcement was omitted. In Experiment 1, 2.0 mg/kg d-amphetamine shifted peak responding to a duration shorter than that found with saline. In Experiment 2, the dose-response function for this drug effect was examined. A 0.3-mg/kg dose of d-amphetamine had no impact on performance, but a 1.0-mg/kg dose shifted the peak duration significantly relative to saline; a 2.0-mg/kg dose shifted the function even mere. These results complement previous findings with rats tested with the peak procedure and pigeons tested with a discrimination procedure.
Original language | English |
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Pages (from-to) | 323-327 |
Number of pages | 5 |
Journal | Pharmacology Biochemistry and Behavior |
Volume | 58 |
Issue number | 2 |
DOIs | |
State | Published - Oct 1997 |
Keywords
- Perception
- Pigeons
- Timing
- d-Amphetamine
ASJC Scopus subject areas
- Biochemistry
- Toxicology
- Pharmacology
- Clinical Biochemistry
- Biological Psychiatry
- Behavioral Neuroscience