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Classifying Non-Dementia and Alzheimer’s Disease/Vascular Dementia Patients Using Kinematic, Time-Based, and Visuospatial Parameters: The Digital Clock Drawing Test
- Source :
- J Alzheimers Dis
- Publication Year :
- 2021
- Publisher :
- IOS Press, 2021.
-
Abstract
- Background: Advantages of digital clock drawing metrics for dementia subtype classification needs examination. Objective: To assess how well kinematic, time-based, and visuospatial features extracted from the digital Clock Drawing Test (dCDT) can classify a combined group of Alzheimer’s disease/Vascular Dementia patients versus healthy controls (HC), and classify dementia patients with Alzheimer’s disease (AD) versus vascular dementia (VaD). Methods: Healthy, community-dwelling control participants (n = 175), patients diagnosed clinically with Alzheimer’s disease (n = 29), and vascular dementia (n = 27) completed the dCDT to command and copy clock drawing conditions. Thirty-seven dCDT command and 37 copy dCDT features were extracted and used with Random Forest classification models. Results: When HC participants were compared to participants with dementia, optimal area under the curve was achieved using models that combined both command and copy dCDT features (AUC = 91.52%). Similarly, when AD versus VaD participants were compared, optimal area under the curve was, achieved with models that combined both command and copy features (AUC = 76.94%). Subsequent follow-up analyses of a corpus of 10 variables of interest determined using a Gini Index found that groups could be dissociated based on kinematic, time-based, and visuospatial features. Conclusion: The dCDT is able to operationally define graphomotor output that cannot be measured using traditional paper and pencil test administration in older health controls and participants with dementia. These data suggest that kinematic, time-based, and visuospatial behavior obtained using the dCDT may provide additional neurocognitive biomarkers that may be able to identify and tract dementia syndromes.
- Subjects :
- Male
medicine.medical_specialty
Disease
Kinematics
Neuropsychological Tests
Pencil test
Article
Digital clock
03 medical and health sciences
0302 clinical medicine
Physical medicine and rehabilitation
Alzheimer Disease
medicine
Humans
Dementia
Cognitive Dysfunction
030212 general & internal medicine
Vascular dementia
Aged
Digital Technology
business.industry
Dementia, Vascular
General Neuroscience
General Medicine
Middle Aged
medicine.disease
Biomechanical Phenomena
Test (assessment)
Psychiatry and Mental health
Clinical Psychology
Visual Perception
Female
Geriatrics and Gerontology
business
Neurocognitive
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 18758908 and 13872877
- Volume :
- 82
- Database :
- OpenAIRE
- Journal :
- Journal of Alzheimer's Disease
- Accession number :
- edsair.doi.dedup.....80f235d9a1da6346cef1f4a7bdc38d34