key peck
INFLUENCES ON COCAINE TOLERANCE ASSESSED UNDER A MULTIPLE CONJUNCTIVE SCHEDULE OF REINFORCEMENT
by: shinta, 10 pagesUnder multiple schedules of reinforcement, previous research has generally observed tolerance to the rate-decreasing effects of cocaine that has been dependent on schedule-parameter size in the ...
TOLERANCE TO EFFECTS OF COCAINE ON BEHAVIOR UNDER A RESPONSE-INITIATED FIXED-INTERVAL SCHEDULE
by: shinta, 12 pagesTolerance to effects of cocaine can be modulated by schedules of reinforcement. With multiple ratio schedules, research has shown an inverse relationship between ratio requirement and amount ...
RAPID ACQUISITION OF PREFERENCE IN CONCURRENT CHAINS: EFFECTS OF d-AMPHETAMINE ON SENSITIVITY TO REINFORCEMENT DELAY
by: shinta, 21 pagesThe purpose of this study was to examine effects of d-amphetamine on choice controlled by reinforcement delay. Eight pigeons responded under a concurrent-chains procedure in which one ...
EFFECTS OF D-AMPHETAMINE AND ETHANOL ON VARIABLE AND REPETITIVE KEY-PECK SEQUENCES IN PIGEONS
by: shinta, 21 pagesThis experiment assessed the effects of d-amphetamine and ethanol on reinforced variable and repetitive key-peck sequences in pigeons. Pigeons responded on two keys under a multiple schedule ...
MORPHINE TOLERANCE AS A FUNCTION OF RATIO SCHEDULE: RESPONSE REQUIREMENT OR UNIT PRICE?
by: shinta, 16 pagesKey pecking by 3 pigeons was maintained by a multiple fixed-ratio 10, fixed-ratio 30, fixed-ratio 90 schedule of food presentation. Components differed with respect to amount of reinforcement, ...
EFFECTS OF AMPHETAMINE-CNS DEPRESSANT COMBINATIONS AND OF OTHER CNS STIMULANTS IN FOUR-CHOICE DRUG DISCRIMINATIONS
by: shinta, 21 pagesThree pigeons were trained to discriminate among 5 mg/kg pentobarbital, 2 mg/kg amphetamine, a combination of these two drugs at these doses, and saline using a four-choice procedure ...
EFFECTS OF MORPHINE ON TEMPORAL DISCRIMINATION AND COLOR MATCHING: GENERAL DISRUPTION OF STIMULUS CONTROL OR SELECTIVE EFFECTS ON TIMING?
by: shinta, 15 pagesDiscrepant effects of drugs on behavior maintained by temporal-discrimination procedures make conclusive statements about the neuropharmacological bases of timing difficult. The current ...
REPEATED POST- OR PRESESSION COCAINE ADMINISTRATION: ROLES OF DOSE AND FIXED-RATIO SCHEDULE
by: shinta, 20 pagesEffects of repeated administration of cocaine to animals behaving under operant contingencies have depended on when the drug is given. Moderate doses given presession have generally led to a
DISRUPTION OF TEMPORALLY ORGANIZED BEHAVIOR BY MORPHINE
by: shinta, 13 pagesFour pigeons pecked keys in two different procedures commonly used in the study of timing, or temporal discrimination. Sessions consisted of 40 trials. During half of the trials, two keys ...
DRUG DISCRIMINATION UNDER CONCURRENT VARIABLE-RATIO VARIABLE-RATIO SCHEDULES
by: shinta, 14 pagesPigeons were trained to discriminate 5 mg/kg pentobarbital from saline under concurrent variable- ratio (VR) VR schedules, in which responses on the pentobarbital-biased lever were ...
