Cocaine and heroin interact differently with nondrug reinforcers in a choice situation

The present study used a rat choice model to test how cocaine or heroin economically interacted with two different nondrug reinforcers along the substitute-to-complement continuum. In Experiment 1, the nondrug alternative was the negative reinforcer timeout-from-avoidance (TOA)-that is, rats could press a lever to obtain a period of safety from footshock. One group of rats chose between cocaine and TOA and another group chose between heroin and TOA. The relative prices of the reinforcers were manipulated across phases while controlling for potential income effects. When cocaine was the reinforcer, rats reacted to price changes by increasing their allocation of behavior to the more expensive option, thereby maintaining relatively proportional intake of cocaine and TOA reinforcers across prices, suggesting these reinforcers were complements here. In contrast, when heroin became relatively cheap, rats increased allocation of income to heroin and decreased allocation of income to TOA, suggesting that heroin substituted for safety. Additionally, rats were willing to accept more footshocks when heroin was easily available. In Experiment 2, the nondrug alternative was saccharin, a positive reinforcer. Heroin and saccharin were complements, but there was no consistent effect of price changes on the allocation of behavior between cocaine and saccharin. As a model of the processes that could be involved in human drug use, these results show that drug-taking behavior depends on the type of drug, the type of nondrug alternative available, and the prices of both. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:32

Enthalten in:

Experimental and clinical psychopharmacology - 32(2024), 2 vom: 30. Apr., Seite 158-172

Sprache:

Englisch

Beteiligte Personen:

Beasley, Madeline M [VerfasserIn]
Amantini, Sarah [VerfasserIn]
Gunawan, Tommy [VerfasserIn]
Silberberg, Alan [VerfasserIn]
Kearns, David N [VerfasserIn]

Links:

Volltext

Themen:

70D95007SX
Cocaine
FST467XS7D
Heroin
I5Y540LHVR
Journal Article
Saccharin

Anmerkungen:

Date Completed 03.04.2024

Date Revised 03.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1037/pha0000674

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM36035260X