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Education differentially contributes to cognitive reserve across racial/ethnic groups
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Family Ties and Cognitive Aging in a Multi-ethnic Cohort
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In: J Aging Health (2020)
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Social Network Characteristics and Cognitive Functioning in Ethnically Diverse Older Adults: The Role of Network Size and Composition
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In: Neuropsychology (2019)
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Semantic and lexical features of words dissimilarly affected by non-fluent, logopenic, and semantic primary progressive aphasia
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Novel genetic loci associated with hippocampal volume
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In: ISSN: 2041-1723 ; EISSN: 2041-1723 ; Nature Communications ; https://hal.archives-ouvertes.fr/hal-01488337 ; Nature Communications, Nature Publishing Group, 2017, 8, pp.13624. ⟨10.1038/ncomms13624⟩ (2017)
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Novel genetic loci underlying human intracranial volume identified through genome-wide association
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In: ISSN: 1097-6256 ; EISSN: 1546-1726 ; Nature Neuroscience ; https://hal.archives-ouvertes.fr/hal-01382716 ; Nature Neuroscience, Nature Publishing Group, 2016, 19 (12), pp.1569-1582. ⟨10.1038/nn.4398⟩ (2016)
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Is Residual Memory Variance a Valid Method for Quantifying Cognitive Reserve? A Longitudinal Application
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Different Demographic, Genetic, and Longitudinal Traits in Language versus Memory Alzheimer’s Subgroups
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Do Neuropsychological Tests Have the Same Meaning in Spanish Speakers as They Do in English Speakers?
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Examining the Multifactorial Nature of Cognitive Aging with Covariance Analysis of Positron Emission Tomography Data
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Abstract:
Research has indicated that there may be age-related and Alzheimer's disease (AD) -related reductions in regional cerebral blood flow (rCBF) in the brain. This study explored differences in age- and AD-related rCBF patterns in the context of cognitive aging using a multivariate approach to the analysis of H215O PET data. First, an rCBF covariance pattern that distinguishes between a group of younger and older adults was identified. Individual subject's expression of the identified age-related pattern was significantly correlated with their performance on tests of memory, even after controlling for the effect of age. This finding suggests that subject expression of the covariance pattern explained additional variation in performance on the memory tasks. The age-related covariance pattern was then compared to an AD-related covariance pattern. There was little evidence that the two covariance patterns were similar, and the age-related pattern did a poor job of differentiating between cognitively-healthy older adults and those with probable AD. The findings from this study are consistent with the multifactorial nature of cognitive aging.
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Keyword:
Aging; Analysis of covariance; Cognition; Emission; Neuropsychology; Tomography
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URL: https://doi.org/10.7916/D87H2X1R
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Examining the multifactorial nature of cognitive aging with covariance analysis of PET data
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