ArticleHuman brain mapping2025
Microstructural Changes in Aging Hippocampal Pathways: Insights From the HCP-Aging Diffusion MRI Study.
Article in Human brain mapping, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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Who cites it
4 citing papers in PubMed.
- Developing an SNR-efficient tensor-valued diffusion encoding protocol for studying brain microstructural changes in neurodegeneration.medRxiv : the preprint server for health sciences · 2026Article
- Global and Medial Temporal MRI Morphometry in Alzheimer's Disease and Cognitively Normal Adults: A Retrospective Association Study.Diagnostics (Basel, Switzerland) · 2026Article
- Contributions of Gray Matter Microstructure to Differences in Fluid Cognition and Episodic Memory Across the Healthy Adult Lifespan.Human brain mapping · 2026Article
- Microstructural Changes in Aging Hippocampal Pathways: Insights From the HCP-Aging Diffusion MRI Study.Human brain mapping · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
While hippocampal atrophy in Alzheimer's disease is well-documented, research on microstructural integrity of hippocampal pathways to selected cortical regions in healthy aging populations remains limited. Four hundred seventy-five healthy individuals aged 36-90 from the Human Connectome Project Aging (HCP-A) dataset were analyzed. Hippocampal fiber pathways, including the "Papez," "Prefrontal," "Occipital," and "Parietal" pathways, were extracted from whole-brain tractography and characterized by fractional anisotropy (FA) and mean diffusivity (MD), neurite density index (NDI), and orientation distribution index (ODI). Partial linear and quadratic nonlinear correlation analyses were conducted to examine the relationship between age, cognition, and diffusion metrics, adjusted by hippocampus volumes. While FA, MD, and ODI demonstrated linear age-related changes, NDI exhibited a quadratic pattern. MD was identified as the most age-sensitive parameter. Among all pathways, the "Prefrontal" pathway showed the most pronounced microstructural changes in both males and females, characterized by reduced FA and NDI and increased MD and ODI with age (FA: r = -0.31 to -0.40; NDI: r
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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.