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Attention and vigilance functions in normal aging.

C M Filley1, C M Cullum

  • 1Department of Neurology, University of Colorado School of Medicine, Colorado, USA.

Applied Neuropsychology
|January 1, 1994
PubMed
Summary
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Cognitive processing slows with age, but simple attention remains stable. Sustained attention declines after 70, potentially impacting overall cognition in older adults.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Gerontology

Background:

  • Cognitive processing speed often declines in healthy older adults.
  • The specific attentional deficits and neuroanatomic underpinnings of age-related cognitive slowing are not fully understood.

Purpose of the Study:

  • To investigate age-related changes in immediate and sustained attention in healthy older individuals.
  • To clarify the neuropsychological profile of age-related cognitive slowing.

Main Methods:

  • Two studies were conducted with healthy older adults aged 50-90.
  • Study I assessed immediate attention using standard tests (n=166).
  • Study II evaluated sustained attention, including a digit cancellation task (n=38).

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Main Results:

  • No significant differences in simple attention were found between younger (50-69) and older (70-90) age groups.
  • Sustained attention, specifically on a digit cancellation task, showed significant decline in the older group.
  • Performance on visual scanning and psychomotor tasks remained similar across age groups.

Conclusions:

  • Simple attention appears to be preserved with aging.
  • Sustained attention demonstrates a decline after age 70.
  • Age-related decline in sustained attention may contribute to general cognitive slowing and be linked to neuroanatomic changes.