Altered neurovascular coupling in mild cognitive impairment and Alzheimer's disease: Associations with polysomnography-derived sleep parameters and cognition.
BackgroundNeurovascular coupling (NVC) reflects the coordination between neuronal activity and cerebral perfusion, and impaired NVC has been implicated in cognitive decline.ObjectiveTo characterize imaging-based NVC-related measures at global and regional levels and examine their associations with polysomnography-deriv...