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Related Experiment Videos

Dual-task performance in demented and nondemented elderly.

E Grober1, M J Sliwinski

  • 1Saul Korey Dept. of Neurology, Albert Einstein College of Medicine, Bronx, NY 10461.

Journal of Clinical and Experimental Neuropsychology
|September 1, 1991
PubMed
Summary

Demented elderly show attention deficits, struggling with both order and item recall during cognitive tasks. Nondemented elderly primarily lose order information when attention is divided.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Gerontology

Background:

  • Dividing attention is crucial for cognitive function in the elderly.
  • Dementia significantly impacts attentional capacity and memory recall.

Purpose of the Study:

  • To investigate attentional resource allocation in demented versus nondemented elderly.
  • To differentiate interference effects on memory recall based on cognitive status.

Main Methods:

  • Assessed elderly subjects (demented and nondemented) on dual-task performance.
  • Tasks involved digit recall and letter similarity judgments.
  • Digit recall analyzed using order-based and order-free criteria.

Main Results:

  • Both groups experienced reduced digit recall with letter-matching distraction.
  • Demented elderly showed persistent recall deficits under both criteria.
  • Nondemented elderly showed minimal deficits in order-free recall, indicating preserved item information.

Conclusions:

  • Letter matching primarily disrupts order information in nondemented elderly.
  • Dementia exacerbates attentional interference, affecting both order and item recall.

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