Actigraphy data has been widely used to measure activity and the circadian rhythm of
individuals across the health sciences, in particular with people with advanced dementia …

Accelerometry data has been widely used to measure activity and the circadian rhythm of
individuals across the health sciences, in particular with people with advanced dementia …

Background Rest‐activity rhythm is commonly used to assess the circadian regulation and
its changes with aging and Alzheimer's disease (AD). Traditional rhythmicity analyses such …

Both parametric and non-parametric approaches to time-series analysis have advantages
and drawbacks. Parametric methods, although powerful and widely used, can yield …

Background In older adults, circadian rhythms show alterations in multiple dimensions with
aging and during Alzheimer's dementia progression. We propose that circadian function …

Circadian rhythms become less dominant and less regular with chronic-degenerative
disease, such that to accurately assess these pathological conditions it is important to …

This article was republished on October 26, 2017, to correct errors in Figs 3, 4, 5, 8, and 9
that were introduced during the typesetting process. The publisher apologizes for the errors …

Background Circadian function is altered with aging, leading to changes in the∼ 24‐h
rhythms of behavior and physiology. Based on circadian rest‐activity rhythms (CRAR), we …

Wrist actigraphy has been used to assess sleep in older adult populations for nearly half a
century. Over the years, the continuous raw activity data derived from actigraphy has been …

Background: Analyzing actigraphy data using standard circadian parametric models and
aggregated nonparametric indices may obscure temporal information that may be a …