Summarized by Masters of Longevity from Neuroscience News.
Brain network differences: a news feature previewing a large neuroimaging study that compares how brain connectivity changes in normal aging versus early Alzheimer’s, and why those distinct trajectories matter for tracking cognition.
Key Takeaways
- A Nature Neuroscience study of over 1,000 individuals found Alzheimer’s drives a unique pattern of whole-brain connectivity reorganization distinct from normal aging.
- Alzheimer’s-specific connectivity shifts appeared in cognitively unimpaired people with low pathology, preceding measurable brain atrophy.
- Whole-brain functional connectivity correlated more closely with cognitive performance than amyloid-beta or tau burden in impaired participants.
