ArticleNeurobiology of aging2025
Depthwise cortical iron relates to functional connectivity and fluid cognition in healthy aging.
Article in Neurobiology of aging, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Regulation of brain iron homeostasis and its influence on cognitive function.European radiology · 2026Article
- Contributions of Gray Matter Microstructure to Differences in Fluid Cognition and Episodic Memory Across the Healthy Adult Lifespan.Human brain mapping · 2026Article
- From cradle to cortex: An exposome- and equity-centered perspective of neurocognitive aging and dementia risk in the era of climate change.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Review
- Voxel-Wise Whole-Brain Analysis in Quantitative Susceptibility Mapping: A Narrative Review.Human brain mapping · 2026Review
- Imaging Developmental Trajectories of Laminar Magnetic Susceptibility Throughout Adulthood in Human Brain Cortex.Human brain mapping · 2025Article
- The Role of Iron Homeostasis Imbalance in T2DM-Associated Cognitive Dysfunction: A Prospective Cohort Study Utilizing Quantitative Susceptibility Mapping.Human brain mapping · 2025Article
- Relationship between impaired cerebral lymphatic function and iron deposition, blood flow in VaD: a clinical MRI study.Frontiers in neuroscience · 2025Article
- High-resolution structural connectivity mediates age-related differences in functional connectivity and fluid cognition.Brain communications · 2025Article
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Authors and funding
3 authors.
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Abstract
Age-related differences in fluid cognition have been associated with both the merging of functional brain networks, defined from resting-state functional magnetic resonance imaging (rsfMRI), and with elevated cortical iron, assessed by quantitative susceptibility mapping (QSM). Limited information is available, however, regarding the depthwise profile of cortical iron and its potential relation to functional connectivity. Here, using an adult lifespan sample (n = 138; 18-80 years), we assessed relations among graph theoretical measures of functional connectivity, column-based depthwise measures of cortical iron, and fluid cognition (i.e., tests of memory, perceptual-motor speed, executive function). Increased age was related both to less segregated functional networks and to increased cortical iron, especially for superficial depths. Functional network segregation mediated age-related differences in memory, whereas depthwise iron mediated age-related differences in general fluid cognition. Lastly, higher mean parietal iron predicted lower network segregation for adults younger than 45 years of age. These findings suggest that functional connectivity and depthwise cortical iron have distinct, complementary roles in the relation between age and fluid cognition in healthy adults.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.