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Longitudinal episodic memory trajectories in older adults with normal cognition
Ioannis Liampas1, Vasiliki Folia2, Eva Ntanasi3,4
1Department of Neurology, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece.
The Clinical Neuropsychologist
|April 11, 2022
Summary
Aging is linked to verbal memory decline in older adults, with educational attainment not showing a significant longitudinal association. This study provides insights into memory changes over time.
Area of Science:
- Neuroscience
- Gerontology
- Cognitive Psychology
Background:
- Episodic memory is crucial for daily functioning in older adults.
- Understanding longitudinal memory trajectories is essential for identifying normative aging patterns.
- Cognitive aging research often focuses on identifying factors influencing memory decline.
Purpose of the Study:
- To determine the longitudinal trajectories of episodic memory in older adults.
- To establish normative standards for episodic memory performance in aging.
- To explore associations between memory changes and demographic factors like age, sex, and education.
Main Methods:
- Utilized data from the cognitively normal (CN) subgroup of the population-based HELIAD cohort.
- Assessed verbal and non-verbal memory using the Greek Verbal Learning Test and MCG-Complex Figure Test.
- Employed linear regression and generalized estimating equations for longitudinal data analysis.
Main Results:
- Aging was associated with a continuum of memory decline at baseline.
- Composite memory scores decreased yearly with age.
- Verbal recall showed significant yearly decreases, with women experiencing steeper declines in delayed cued recall.
Conclusions:
- Aging is consistently associated with steeper verbal memory decline.
- Educational attainment did not show a significant longitudinal association with memory decline.
- Findings contribute to understanding normative cognitive aging and memory changes.
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