Circadian Stability via Accelerometer in People with Dementia: A DARK.DEM Proof-of-Concept

The circadian rhythm is essential for regulating physiological functions and is compromised in people with dementia. Objective measurements are needed to track circadian trend and stability, usually from actigraphy data. This paper explores the feasibility of applying the stability model on activity counts obtained from raw accelerometer, and discusses preliminary results limited to two participants included in a randomized controlled trial that investigates the effect of virtual darkness as a treatment.