Cognitive impairment categorized in community-dwelling older adults with and without dementia using in-home sensors that recognise activities of daily living.
Cognitive impairment due to dementia decreases functionality in Activities of Daily Living (ADL). Its assessment is useful to identify care needs, risks and monitor disease progression. This study investigates differences in ADL pattern-performance between dementia patients and healthy controls using unobtrusive sensors. Around 9,600 person-hours of activity data were collected from the home of ten dementia patients and ten healthy controls using a wireless-unobtrusive sensors and analysed to detect ADL. Recognised ADL were visualized using activity maps, the heterogeneity and accuracy to discriminate patients from healthy were analysed. Activity maps of dementia patients reveal unorganised behaviour patterns and heterogeneity differed significantly between the healthy and diseased. The discriminating accuracy increases with observation duration (0.95 for 20 days). Unobtrusive sensors quantify ADL-relevant behaviour, useful to uncover the effect of cognitive impairment, to quantify ADL-relevant changes in the course of dementia and to measure outcomes of anti-dementia treatments.
Gerontechnology &Rehabilitation Group, University of Bern, Bern, Switzerland.|ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.|University Hospital of Old Age Psychiatry, University of Bern, Anna-Seiler-Haus,Bern, Switzerland.
Prabitha
P
Urwyler
Gerontechnology &Rehabilitation Group, University of Bern, Bern, Switzerland.
Reto
R
Stucki
University Hospital of Old Age Psychiatry, University of Bern, Anna-Seiler-Haus,Bern, Switzerland.
Luca
L
Rampa
Gerontechnology &Rehabilitation Group, University of Bern, Bern, Switzerland.|University Neurorehabilitation Clinics, Department of Neurology, Inselspital, and University of Bern, Anna-Seiler-Haus,, Bern, Switzerland.
René
R
Müri
Gerontechnology &Rehabilitation Group, University of Bern, Bern, Switzerland.|ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.|University Hospital of Old Age Psychiatry, University of Bern, Anna-Seiler-Haus,Bern, Switzerland.
Urs P
UP
Mosimann
Gerontechnology &Rehabilitation Group, University of Bern, Bern, Switzerland.|ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
Tobias
T
Nef
D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D060825:Cognitive Dysfunction / Q000175:diagnosis*; D003704:Dementia / Q000175:diagnosis*; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male