Open AccessFluid intelligence is associated with cortical volume and white matter tract integrity within multiple-demand system across adult lifespan
Author(s) -
PinYu Chen,
ChangLe Chen,
YungChin Hsu,
WenYih Isaac Tseng
Publication year - 2020
Publication title -
neuroimage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.259
H-Index - 364
eISSN - 1095-9572
pISSN - 1053-8119
DOI - 10.1016/j.neuroimage.2020.116576
Subject(s) - white matter , fractional anisotropy , diffusion mri , psychology , lateralization of brain function , brain size , context (archaeology) , fluid intelligence , partial volume , partial correlation , correlation , neuroscience , magnetic resonance imaging , working memory , biology , nuclear medicine , mathematics , medicine , cognition , geometry , paleontology , radiology
Our results demonstrate significant associations between Gf and both cortical volumes and tract integrity of the MD system across the adult lifespan in a population-based cohort. We found that the association remained significant in the entire adult lifespan despite simultaneous decline of Gf and the MD system. Our results suggest that the MD system might be a structural underpinning of Gf and support the fronto-parietal model of cognitive aging. However, we did not find hemispheric differences in the Gf-MD correlations, not supporting the hemi-aging hypothesis.
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