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Related Experiment Videos

Task-specific tolerance to d-amphetamine.

M W Emmett-Oglesby, D G Spencer, D M Wood

    Neuropharmacology
    |May 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    Rats developed tolerance to d-amphetamine, but only in the specific task where the drug was chronically administered. This demonstrates that drug tolerance is behaviorally specific.

    Area of Science:

    • Neuroscience
    • Behavioral Pharmacology

    Background:

    • D-amphetamine is a stimulant known to affect behavior and reward pathways.
    • Understanding drug tolerance is crucial for therapeutic applications and addiction research.

    Purpose of the Study:

    • To investigate the behavioral specificity of tolerance to d-amphetamine.
    • To determine if chronic d-amphetamine administration leads to tolerance in a task-specific manner.

    Main Methods:

    • Rats were trained on concurrent sweetened-milk drinking and bar-pressing tasks.
    • Dose-response functions for d-amphetamine were assessed before and after chronic drug or saline administration.
    • Chronic administration involved daily injections, with drug exposure targeted to one specific behavior.

    Main Results:

    Related Experiment Videos

    • D-amphetamine decreased milk intake and lever-pressing reinforcement dose-dependently before chronic treatment.
    • Rats developed tolerance to d-amphetamine in the behaviorally trained task.
    • No tolerance was observed in the task where saline, not d-amphetamine, was chronically administered.

    Conclusions:

    • Tolerance to d-amphetamine is not generalized but is specific to the behavior associated with chronic drug exposure.
    • This finding highlights the role of behavioral context in the development of pharmacological tolerance.