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11.
  • Vidal-Pineiro, Didac, et al. (author)
  • Individual variations in 'brain age' relate to early-life factors more than to longitudinal brain change
  • 2021
  • In: eLIFE. - : eLife Sciences Publications. - 2050-084X. ; 10
  • Journal article (peer-reviewed)abstract
    • Brain age is a widely used index for quantifying individuals’ brain health as deviation from a normative brain aging trajectory. Higher-than-expected brain age is thought partially to reflect above-average rate of brain aging. Here, we explicitly tested this assumption in two indepen-dent large test datasets (UK Biobank [main] and Lifebrain [replication]; longitudinal observations ≈ 2750 and 4200) by assessing the relationship between cross-sectional and longitudinal estimates of brain age. Brain age models were estimated in two different training datasets (n ≈ 38,000 [main] and 1800 individuals [replication]) based on brain structural features. The results showed no association between cross-sectional brain age and the rate of brain change measured longitudinally. Rather, brain age in adulthood was associated with the congenital factors of birth weight and polygenic scores of brain age, assumed to reflect a constant, lifelong influence on brain structure from early life. The results call for nuanced interpretations of cross-sectional indices of the aging brain and question their validity as markers of ongoing within-person changes of the aging brain. Longitudinal imaging data should be preferred whenever the goal is to understand individual change trajectories of brain and cognition in aging.
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12.
  • Walhovd, Kristine B., et al. (author)
  • Education and Income Show Heterogeneous Relationships to Lifespan Brain and Cognitive Differences Across European and US Cohorts
  • 2022
  • In: Cerebral Cortex. - : Oxford University Press. - 1047-3211 .- 1460-2199. ; 32:4, s. 839-854
  • Journal article (peer-reviewed)abstract
    • Higher socio-economic status (SES) has been proposed to have facilitating and protective effects on brain and cognition. We ask whether relationships between SES, brain volumes and cognitive ability differ across cohorts, by age and national origin. European and US cohorts covering the lifespan were studied (4-97 years, N = 500 000; 54 000 w/brain imaging). There was substantial heterogeneity across cohorts for all associations. Education was positively related to intracranial (ICV) and total gray matter (GM) volume. Income was related to ICV, but not GM. We did not observe reliable differences in associations as a function of age. SES was more strongly related to brain and cognition in US than European cohorts. Sample representativity varies, and this study cannot identify mechanisms underlying differences in associations across cohorts. Differences in neuroanatomical volumes partially explained SES-cognition relationships. SES was more strongly related to ICV than to GM, implying that SES-cognition relations in adulthood are less likely grounded in neuroprotective effects on GM volume in aging. The relatively stronger SES-ICV associations rather are compatible with SES-brain volume relationships being established early in life, as ICV stabilizes in childhood. The findings underscore that SES has no uniform association with, or impact on, brain and cognition.
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  • Result 11-12 of 12
Type of publication
journal article (12)
Type of content
peer-reviewed (12)
Author/Editor
Lindenberger, Ulman (12)
Düzel, Sandra (12)
Nyberg, Lars, 1966- (11)
Brandmaier, Andreas ... (9)
Bartrés-Faz, David (9)
Fjell, Anders M. (9)
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Walhovd, Kristine B. (9)
Mowinckel, Athanasia ... (8)
Solé-Padullés, Crist ... (8)
Sørensen, Øystein (8)
Zsoldos, Eniko (6)
Drevon, Christian A. (6)
Ebmeier, Klaus P. (6)
Suri, Sana (5)
Pudas, Sara, Docent, ... (4)
Wang, Yunpeng (4)
Idland, Ane-Victoria (3)
Watne, Leiv Otto (3)
Bertram, Lars (3)
Baaré, William F.C. (3)
Madsen, Kathrine Ska ... (3)
Vidal-Piñeiro, Didac (3)
Bäckman, Lars (2)
Binnewies, Julia (2)
Nawijn, Laura (2)
Knights, Ethan (2)
Andersson, Micael (1)
Maass, Anne (1)
Karalija, Nina, 1984 ... (1)
Riklund, Katrine, MD ... (1)
Ebmeier, Klaus (1)
Smith, Stephen M. (1)
Lyngstad, Torkild Ho ... (1)
Penninx, Brenda W J ... (1)
Düzel, Emrah (1)
Panizzon, Matthew S. (1)
Kremen, William S. (1)
Lill, Christina M (1)
Lövdén, Martin (1)
Penninx, Brenda (1)
Han, Laura K.M. (1)
Milaneschi, Yuri (1)
Plachti, Anna (1)
Håberg, Asta K. (1)
Sendtner, Michael (1)
Lövdén, Martin, 1972 ... (1)
Johansson, Jarkko (1)
Park, Denise C. (1)
Walhovd, Kristine Be ... (1)
Papenberg, Goran (1)
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University
Umeå University (11)
Karolinska Institutet (2)
University of Gothenburg (1)
Stockholm University (1)
Language
English (12)
Research subject (UKÄ/SCB)
Medical and Health Sciences (12)
Social Sciences (2)

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