Age affects white matter microstructure and episodic memory across the older adult lifespan

•White matter microstructure varies nonlinearly across the older adult lifespan•Nonlinear effects across the brain were seen for fractional anisotropy and radial diffusivity metrics, but not axial diffusivity•Age effects are not solely due to white matter pathology or cognitive impairment•Age effect...

Ausführliche Beschreibung