focalinterest.net

AI Summary of Scholarly Research

This page presents an AI-generated summary of a published research paper. The original authors did not write or review this article. [See full disclosure ↓]

Basal ganglia PVSs linked to worse cognitive decline over time

Neuroscience research
Jto410, Wikimedia Commons, CC BY-SA 3.0 · CC BY-SA 3.0

Written by

editor@focalinterest.com

in

Research area:psychology-neuroscience

What the study found

Higher MRI-visible perivascular spaces, or PVSs, in the basal ganglia were associated with worse cognitive performance over time. The association remained for executive function and visuospatial skills even after accounting for other cerebral small vessel disease markers.

Why the authors say this matters

The authors conclude that basal ganglia PVS burden may be an emerging marker of domain-specific cognitive decline in aging. They also say the findings support PVS as a vascular contributor to deep brain structure damage underlying cognitive decline over time.

What the researchers tested

PVS volumes were segmented with a deep learning algorithm. The researchers used linear mixed-effects models adjusted for age, sex, race/ethnicity, education, baseline cognitive status, apolipoprotein E-ε4 presence, Framingham Stroke Risk Profile, and intracranial volume, and they also ran head-to-head comparisons among statistically significant SVD markers.

What worked and what didn't

The abstract does not report the same independent result for the other cognitive measures after head-to-head comparison. The study also states that causation cannot be established.

What to keep in mind

This was an observational study, so it cannot show that PVS caused the cognitive decline. The abstract does not describe additional limitations beyond that point, and the findings come from one cohort of participants without stroke or dementia.

Key points

  • Higher basal ganglia MRI-visible perivascular spaces were linked to worse cognitive performance over time.
  • The strongest independent associations were with executive function and visuospatial skills.
  • The study included 750 participants without stroke or dementia from a longitudinal cohort.
  • MRI measures also included white matter hyperintensities, lacunes, and cerebral microbleeds.
  • The authors say the findings support PVS as an emerging marker of domain-specific cognitive decline.

Disclosure

Research title:
Basal ganglia PVSs linked to worse cognitive decline over time
Authors:
Kyoko Kohno, Yunyi Sun, James D. LeFevre, W Hudson Robb, T. Bryan Jackson, Dandan Liu, Yukti Vyas, Benjamin Sweely, Kimberly R. Pechman, Niranjana Shashikumar, Amalia Peterson, Bennett Landman, L Taylor Davis, Timothy J. Hohman, Angela L. Jefferson
Institutions:
Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University, Vanderbilt University Medical Center, Vanderbilt University Medical Center, Vanderbilt University Medical Center, Vanderbilt University Medical Center, Vanderbilt University Medical Center, Vanderbilt University Medical Center, Vanderbilt University Medical Center
Publication date:
2026-04-24
DOI:
10.1212/wnl.0000000000214803
OpenAlex record:
View
Image credit:
Jto410, Wikimedia Commons, CC BY-SA 3.0
AI provenance: This post was generated by gpt-5.4-mini (OpenAI). The original authors did not write or review this post.

More posts