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Related Experiment Videos

Immediate memory spans in dementia.

A Orsini1, L Trojano, L Chiacchio

  • 1Dipartimento di Psicologia, Università La Sapienza, Roma, Italia.

Perceptual and Motor Skills
|August 1, 1988
PubMed
Summary
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Working memory capacity differs between dementia stages. Spatial span, but not verbal span, significantly differentiated normal individuals from those with mild or severe dementia.

Area of Science:

  • Neuroscience
  • Psychology
  • Cognitive Science

Background:

  • Working memory is crucial for cognitive functions.
  • Dementia significantly impacts cognitive abilities, including memory.
  • Understanding memory deficits in dementia is vital for diagnosis and care.

Purpose of the Study:

  • To compare working memory performance across different dementia severity levels.
  • To investigate the differential impact of dementia on spatial versus verbal working memory.

Main Methods:

  • Assessed spatial span using Corsi's block-tapping test.
  • Measured verbal spans for digits (Wechsler Digits Forward Test) and words.
  • Compared performance in 30 normal subjects and 51 demented patients (mild and severe groups).

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Main Results:

  • Significant differences in spatial span were found among the three groups.
  • No significant differences in verbal spans were observed between controls and mildly demented patients.
  • Severely demented patients showed impairments in both spatial and verbal spans compared to controls.

Conclusions:

  • Spatial working memory is more sensitive to early dementia-related decline than verbal working memory.
  • These findings support theories differentiating components of working memory in cognitive aging and disease.