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Related Experiment Videos

Memory dysfunction and word priming in dementia and amnesia.

A P Shimamura, D P Salmon, L R Squire

    Behavioral Neuroscience
    |June 1, 1987
    PubMed
    Summary
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    Functional Neuroimaging of Cortical Dysfunction in Alcoholic Korsakoff's Syndrome.

    Journal of cognitive neuroscience·2013

    Patients with Alzheimer's disease show impaired unconscious memory (priming), unlike those with alcoholic Korsakoff's syndrome or Huntington's disease. This suggests early brain changes beyond typical amnesia in Alzheimer's disease.

    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Neurology

    Background:

    • Alzheimer's disease (AD) and alcoholic Korsakoff's syndrome (AKS) cause memory deficits.
    • Huntington's disease (HD) also affects cognitive functions.
    • Priming, an unconscious memory effect, is typically preserved in amnesia.

    Purpose of the Study:

    • To compare memory performance in Alzheimer's disease (AD), alcoholic Korsakoff's syndrome (AKS), and Huntington's disease (HD).
    • To investigate the integrity of priming as a measure of early AD-related brain changes.

    Main Methods:

    • Comparative analysis of verbal memory tests across patient groups.
    • Assessment of priming (unconscious memory) in AD, AKS, and HD patients.

    Main Results:

    Related Experiment Videos

    • All groups showed verbal memory impairment.
    • Only Alzheimer's disease patients exhibited impaired priming.
    • Impaired priming was observed even in mildly demented AD patients.

    Conclusions:

    • Impaired priming in early Alzheimer's disease indicates damage beyond typical amnesic pathways.
    • Early-stage AD involves distinct neuropathological changes affecting unconscious memory.
    • Priming deficits may serve as an early biomarker for Alzheimer's disease.