ArticleFrontiers in aging neuroscience2026
Structural and functional alterations of posterior cingulate cortex subregions in successful cognitive aging.
Article in Frontiers in aging neuroscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
Successful cognitive aging (SCA) describes the preservation of cognitive abilities into advanced age, but its neural basis remains incompletely understood. Metabolic and pathological evidence implicates the posterior cingulate cortex (PCC) as a key region supporting cognitive resilience. However, functionally distinct PCC subregions have rarely been examined using complementary structural, microstructural, and functional imaging measures. In this cross-sectional secondary analysis of publicly available Human Connectome Project in Aging data, we identified 29 adults aged at least 80 years who met successful cognitive aging criteria based on episodic memory and executive function. We selected 29 adults with normal aging (NA) group and 29 middle-aged adults (MA) group matched for sex and education, yielding 87 participants. We combined structural MRI, neurite orientation dispersion and density imaging, and resting-state functional MRI to assess multimodal features across three PCC subregions. These features included cortical thickness, Neurite Density Index (NDI), Orientation Dispersion Index (ODI), Free Water Fraction (FWF), and cortex-wide functional connectivity. Both older groups showed lower cortical thickness in the dorsal and ventral PCC than the MA group. Cortical thickness, NDI, and ODI did not differ significantly between successful and normal aging. FWF was numerically lower in the left ventral PCC in SCA group, but this exploratory observation did not reach significance (Tukey-adjusted
Indexed as
Identifiers
What OpenQuestion holds
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 OpenQuestion graph.