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Diazepam, behavior, and aging: increased sensitivity or lower baseline performance?

J V Hinrichs, M M Ghoneim

    Psychopharmacology
    |January 1, 1987
    PubMed
    Summary
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    Diazepam impairs cognitive and psychomotor skills similarly across all adult age groups. Aging also reduces performance, with effects being additive rather than synergistic with diazepam.

    Area of Science:

    • Pharmacology
    • Gerontology
    • Cognitive Neuroscience

    Background:

    • Diazepam is a common anxiolytic medication.
    • Aging affects cognitive and psychomotor functions.
    • Interactions between medications and age are not fully understood.

    Purpose of the Study:

    • To investigate the effects of diazepam on cognitive performance, psychomotor skills, and subjective reactions in different age groups.
    • To determine if diazepam interacts synergistically with age-related performance decrements.

    Main Methods:

    • 12 healthy subjects were divided into three age groups: young (19-28), middle-aged (40-45), and old (61-73).
    • Subjects were administered diazepam and placebo in a controlled study.
    • Cognitive performance, psychomotor skills, and subjective reactions were assessed.

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    Main Results:

    • Diazepam caused performance decrements across all age groups.
    • Age-related performance decline was observed, with middle-aged subjects showing results closer to older subjects.
    • The effects of diazepam and age were additive and noninteracting; no synergistic effects were found in older individuals.

    Conclusions:

    • Diazepam's impact on performance is consistent across adult age groups.
    • Aging independently impairs cognitive and psychomotor functions.
    • The study highlights the additive nature of drug effects and age-related changes.