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Related Experiment Videos

Primary and working memory functioning in Alzheimer-type dementia.

R G Morris1, A D Baddeley

  • 1University of Toronto, Canada.

Journal of Clinical and Experimental Neuropsychology
|March 1, 1988
PubMed
Summary
This summary is machine-generated.

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Early Alzheimer-type dementia (AD) impairs working memory control processes, not the articulatory loop. This affects short-term retention and memory span, with a preserved recency effect in recall.

Area of Science:

  • Neuropsychology
  • Cognitive Neuroscience
  • Neurology

Background:

  • Early Alzheimer-type dementia (AD) is characterized by progressive cognitive decline.
  • Primary memory functioning is crucial for daily activities and is often affected in dementia.
  • Working memory models provide a framework for understanding memory deficits.

Purpose of the Study:

  • To review neuropsychological studies on primary memory in early Alzheimer-type dementia.
  • To examine working memory functioning in relation to established models.
  • To identify specific patterns of memory impairment in early AD.

Main Methods:

  • Review of recent neuropsychological research on primary memory and working memory.
  • Analysis of memory deficits including recency effects, memory span, and retention after distraction.

Related Experiment Videos

  • Application of the Working Memory Model (Baddeley & Hitch, 1974) to interpret findings.

    • Main Results:

    • Early AD shows a distinct pattern of primary memory deficits.
    • Recency effects in free recall are relatively unimpaired.
    • Moderate impairment in memory span and significant impairment in short-term retention after distraction were observed.

    Conclusions:

    • The Articulatory Loop System of working memory appears intact in early AD.
    • Deficits are primarily attributed to impairments in the control processes of working memory.
    • Understanding these specific deficits can inform interventions for early Alzheimer-type dementia.