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Frontal lobe cognitive functions in aging: methodologic considerations

K B Boone1, B L Miller, I M Lesser

  • 1Department of Psychiatry, Harbor-UCLA Medical Center, Torrance 90509.

Dementia (Basel, Switzerland)
|May 1, 1993
PubMed
Summary
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Frontal lobe functions may decline with age, but this is often due to coexisting medical and psychiatric conditions. Careful participant screening is crucial for accurate aging and cognition studies.

Area of Science:

  • Neuroscience
  • Gerontology
  • Cognitive Psychology

Background:

  • Empirical literature presents conflicting findings on age-related frontal lobe function decline.
  • Discrepancies may stem from varied medical and psychiatric exclusion criteria in existing studies.

Purpose of the Study:

  • To review existing literature on aging and frontal lobe functions.
  • To present preliminary data on the impact of common geriatric disorders on frontal functions.
  • To emphasize the necessity of rigorous subject screening in aging cognition research.

Main Methods:

  • Literature review of empirical studies on aging and frontal lobe functions.
  • Analysis of preliminary data examining frontal lobe performance in older adults.
  • Evaluation of the influence of medical and psychiatric comorbidities.

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Main Results:

  • Frontal lobe functions appear particularly vulnerable to common medical and psychiatric disorders in older adults.
  • Inconsistent findings in prior research may be attributed to inadequate control of confounding health conditions.

Conclusions:

  • Age-related cognitive changes, specifically in frontal lobe functions, are often confounded by prevalent medical and psychiatric illnesses in the elderly.
  • Future research investigating cognitive aging must implement stringent participant screening to isolate the effects of aging from those of comorbid conditions.