Published in:
01-03-2022 | Alzheimer's Disease | Neurology • Original Article
Connection between sleeping patterns and cognitive deterioration in women with Alzheimer’s disease
Authors:
Alberto Corbi, Daniel Burgos
Published in:
Sleep and Breathing
|
Issue 1/2022
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Abstract
Background
Alzheimer’s disease (AD) causes symptoms such as dementia, memory loss, disorientation, and even aggressiveness, and is more common in women than in men. AD may also manifest itself in changes in sleep patterns. However, the relationship between AD (in all stages) and bedtime behavior has not been thoroughly investigated.
Methods
In a prospective, cross-sectional survey, we evaluated 74 women categorized in two different stages of cognitive decline associated with AD (mild and severe) along with 37 women with no cognitive decline who served as controls. We obtained demographic and medical information such as age, health status, and medication, as well as psychiatrically confirmed staging of AD. We also collected actigraphy data for several nights in a row with a medical grade wristband using a 3-axis accelerometer and solid-state on-board memory. These data served as parameters for a clustering machine learning (ML) algorithm.
Results
The ML process was able to unsupervisedly identify 85% of the participants according to their pre-assigned degree of dementia. When the clustering was carried out in a binary fashion (i.e., only taking into account healthy members vs. severely affected AD patients), it was possible to correctly classify 91% of the cases.
Conclusions
This study revealed a strong connection between the severity of the intellectual decline and the features distilled from actigraphically derived sleep parameters.