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Aging01:26

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Related Experiment Video

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Symmetric Bihemispheric Postmortem Brain Cutting to Study Healthy and Pathological Brain Conditions in Humans
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Transverse patterning, aging, and neuropsychological correlates in humans.

Enrique I Gracian1, David C Osmon1, Katie E Mosack1

  • 1Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin.

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Summary

Older adults with cognitive impairments struggle with transverse patterning, a task requiring pattern separation. This suggests memory and executive functions are crucial for this learning adaptation.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Gerontology

Background:

  • Transverse patterning, a 'rock/paper/scissors' adaptation, relies on the hippocampus and is sensitive to aging.
  • Previous studies identified pattern separation deficits in cognitively normal older adults with impairments.
  • Variability in pattern separation using transverse patterning in older adults remains underexplored.

Purpose of the Study:

  • Compare transverse patterning performance in impaired older adults, unimpaired older adults, and young adults.
  • Identify neuropsychological correlates of transverse patterning performance.

Main Methods:

  • Administered a transverse patterning task to young adults, unimpaired older adults, and impaired older adults.
  • Analyzed performance based on trials to criterion and interference conditions.
  • Conducted regression analyses with memory and executive functioning scores.

Main Results:

  • Impaired older adults required more trials to criterion than both unimpaired older adults and young adults.
  • Unimpaired older adults also showed slower learning than young adults.
  • Group differences were pronounced in high interference conditions, indicating peak pattern separation demands.

Conclusions:

  • Cognitively impaired older adults exhibit significant deficits in transverse patterning, even after passing cognitive screenings.
  • Memory and executive functions are associated with transverse patterning performance.
  • Further research should investigate similarities between impaired older adults and Mild Cognitive Impairment patients.