Journal article
Prediction of brain age and cognitive age: quantifying brain and cognitive maintenance in aging
- Abstract:
- The concept of brain maintenance refers to the preservation of brain integrity in older age, while cognitive reserve refers to the capacity to maintain cognition in the presence of neurodegeneration or aging‐related brain changes. While both mechanisms are thought to contribute to individual differences in cognitive function among older adults, there is currently no “gold standard” for measuring these constructs. Using machine‐learning methods, we estimated brain and cognitive age based on deviations from normative aging patterns in the Whitehall II MRI substudy cohort (N = 537, age range = 60.34–82.76), and tested the degree of correspondence between these constructs, as well as their associations with premorbid IQ, education, and lifestyle trajectories. In line with established literature highlighting IQ as a proxy for cognitive reserve, higher premorbid IQ was linked to lower cognitive age independent of brain age. No strong evidence was found for associations between brain or cognitive age and lifestyle trajectories from midlife to late life based on latent class growth analyses. However, post hoc analyses revealed a relationship between cumulative lifestyle measures and brain age independent of cognitive age. In conclusion, we present a novel approach to characterizing brain and cognitive maintenance in aging, which may be useful for future studies seeking to identify factors that contribute to brain preservation and cognitive reserve mechanisms in older age.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1002/hbm.25316
Authors
- Publisher:
- Wiley
- Journal:
- Human Brain Mapping More from this journal
- Volume:
- 42
- Issue:
- 6
- Pages:
- 1626-1640
- Publication date:
- 2020-12-14
- Acceptance date:
- 2020-12-01
- DOI:
- EISSN:
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1097-0193
- ISSN:
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1065-9471
- Language:
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English
- Keywords:
- Pubs id:
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1147466
- Local pid:
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pubs:1147466
- Deposit date:
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2020-12-01
- ARK identifier:
Terms of use
- Copyright holder:
- Anatürk et al.
- Copyright date:
- 2020
- Rights statement:
- © 2020 The Authors. Human Brain Mapping published by Wiley Periodicals LLC. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Licence:
- CC Attribution (CC BY)
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