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The effects of phencyclidine, ketamine, delta-amphetamine and pentobarbital on schedule-controlled behavior in the mouse.

G. Wenger, P. Dews

Journal of Pharmacology and Experimental Therapeutics March 1, 1976 DOI: 10.1016/s0022-3565(25)30455-6 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Behavioral pharmacology experiment (animal study) Peer reviewed
Population Mice trained on a multiple FR-30 FI-300 sec schedule of food reinforcement
Interventions Pentobarbital delta-amphetamine Phencyclidine Ketamine
Dose delta-amphetamine 1 mg/kg; ketamine 100 mg/kg; phencyclidine 3 mg/kg; pentobarbital 3 mg/kg
Topics Esketamine Ketamine
Key findings At some dose each of the four drugs increased responding, with proportionately greater increases at low response rates. Delta-amphetamine, ketamine, and phencyclidine produced dose-related fixed-interval rate increases to 1.83, 1.25, and 1.32 times control, respectively, leading the authors to describe phencyclidine and ketamine as showing some "amphetamine-like" effects in the mouse. Pentobarbital raised both rates at 3 mg/kg but progressively decreased them at higher doses.

Abstract

The response of mice of breaking a light beam onto a photocell was programmed to produce food according to a multiple schedule with alternating 30-response fixed ratio, 300-second fixed interval (FR-30 FI-300 sec) components. Training was standardized for all mice, and stable patterns of responding that were similar to those described for other species and responses under this schedule developed quickly. The effects of pentobaribtal, delta-amphetamine, phencyclidine and ketamine were studied. At some dose, each of the four drugs produced an increase in rate of responding; the increase was proportionately greater at low rates of responding than at higher rates. At some dose range, delta-amphetamine, ketamine and phencyclidine produced dose-related increases in FI average rates were to 1.83, 1.25 and 1.32 times the control rate for delta-amphetamine (1 mg/kg), ketamine (100 mg/kg) and phencyclidine (3 mg/kg), respectively. Phencyclidine and ketamine thus showed some "amphetamine-like" effects in the mouse. Pentobarbital increased (1.25 times the control rate) both the FR and FI response rates at a dose of 3 mg/kg. Higher doses of pentobarbital progressively decreased both FR and FI response rates in a parallel fashion.

Comparable studies

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