Within-age-group variability in brain activity

Older age is associated with within-age-group variability in brain activity in humans.

“older adults’ brain activity was less synchronized with others and showed greater individual variability within their age group.”

Humanswatching the same television episodebrain

Aging reduces shared event structure at encoding, weakening memory reinstatement in the Posterior Medial Network

Preprint·1 Jan 2026