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Alcohol-associated conditioned reinforcement.

S G Smith, T E Werner, W M Davis

    Psychopharmacology
    |August 16, 1977
    PubMed
    Summary
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    Alcohol acts as a conditioned reinforcer in rats, meaning its presence can strengthen behaviors. Higher alcohol doses resulted in a stronger conditioned reinforcing effect, influencing future responses.

    Area of Science:

    • Neuroscience
    • Behavioral Pharmacology
    • Addiction Research

    Background:

    • Understanding the mechanisms of addiction is crucial for developing effective treatments.
    • Alcohol's psychoactive properties suggest it may acquire conditioned reinforcing properties.
    • Previous research has explored various aspects of drug self-administration and conditioning.

    Purpose of the Study:

    • To investigate whether alcohol can function as a conditioned reinforcer in rats.
    • To determine if the dose of alcohol influences the strength of its conditioned reinforcing properties.
    • To examine the acquisition and potency of alcohol-induced conditioned reinforcement.

    Main Methods:

    • Rats received intragastric infusions of saline or varying doses of alcohol (25, 50, 100 mg/kg/infusion).

    Related Experiment Videos

  • A buzzer (conditioned stimulus) was presented during the infusion interval.
  • Extinction tests assessed the conditioned reinforcing effects of the buzzer paired with alcohol.
  • A second study involved lever pressing to obtain infusions paired with the buzzer.

    • Main Results:

    • Conditioned reinforcement was successfully acquired, demonstrated by responses during extinction tests.
    • The potency of the conditioned reinforcer increased with higher unit doses of alcohol.
    • Lever pressing behavior increased with higher alcohol doses used in prior conditioning sessions.

    Conclusions:

    • Alcohol can acquire conditioned reinforcing properties in rats.
    • The dose of alcohol is a critical factor in determining the strength of its conditioned reinforcing effects.
    • These findings contribute to understanding the neurobiological basis of alcohol reinforcement and addiction.