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Related Experiment Videos

Periodic availability: factors affecting alcohol selection in rats.

F A Holloway, D C Bird, J A Devenport

    Alcohol (Fayetteville, N.Y.)
    |January 1, 1984
    PubMed
    Summary

    Periodic access to alcohol, especially at lower concentrations, increases alcohol selection in rats. Continuous availability reduced this selection, highlighting the impact of access schedules on alcohol consumption patterns.

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    Area of Science:

    • Behavioral neuroscience
    • Addiction research

    Background:

    • Understanding factors influencing alcohol consumption is crucial for addiction research.
    • Alcohol availability and concentration are known to affect intake, but the role of access schedules requires further investigation.

    Purpose of the Study:

    • To investigate how alcohol availability conditions and concentration influence the acquisition and maintenance of alcohol selection in rats.
    • To determine the impact of periodic versus continuous access on alcohol preference.

    Main Methods:

    • Sprague-Dawley rats, not preferring alcohol, were used to assess alcohol selection under different availability conditions.
    • Rats experienced periodic or continuous access to varying alcohol concentrations (5% and 10%).
    • Alcohol selection was measured by comparing intake under different schedules and concentrations.

    Main Results:

    • Periodic access to 5% alcohol led to immediate increases in alcohol selection, while 10% alcohol showed gradual increases.
    • Rats initially given continuous access did not increase alcohol selection until switched to a periodic schedule.
    • Alcohol selection increases were not sustained when alcohol became continuously available again.
    • Periodic access, regardless of schedule regularity (fixed or random), increased alcohol selection.

    Conclusions:

    • Alcohol availability schedules significantly impact alcohol selection, with periodic access promoting higher selection.
    • Alcohol concentration, prior experience, access frequency, schedule regularity, and individual differences modulate alcohol selection.
    • Findings suggest that intermittent access may be a critical factor in the development of alcohol preference.

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