Nonlinear indices of circadian changes in individuals with dementia and aggression

Abstract Nonlinear analyses of actigraphy data were utilized to investigate circadian rest-activity system motor control in nursing-home residents with dementia and with/without aggressive behavior (AB). Significant differences observed between groups in measures of approximate entropy (ApEn) and fr...

Full description

Saved in:
Bibliographic Details
Published in:Psychiatry research 2012-08, Vol.199 (1), p.77-78
Main Authors: Etcher, LuAnn, Whall, Ann, Kumar, Rahul, Devanand, Davangere, Yeragani, Vikram
Format: Article
Language:English
Subjects:
Actigraphy - methods
Actigraphy - psychology
Activity Cycles - physiology
Adult and adolescent clinical studies
Aged, 80 and over
Aggression - physiology
Biological and medical sciences
Circadian motoric control
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Dementia - complications
Dementia - physiopathology
Dementia behaviors
Female
Geriatrics
Humans
Male
Medical sciences
Neurology
Nonlinear analyses
Nonlinear Dynamics
Nursing Homes
Organic mental disorders. Neuropsychology
Psychiatry
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Nonlinear analyses of actigraphy data were utilized to investigate circadian rest-activity system motor control in nursing-home residents with dementia and with/without aggressive behavior (AB). Significant differences observed between groups in measures of approximate entropy (ApEn) and fractal dimension (FD). ApEn and FD are sensitive to detecting and characterizing discrete changes in central motoric control and temporality of behaviors in dementia. Findings may inform understanding of clinical heterogeneity and possible physiologic sub-classifications of Alzheimer’s dementia.
ISSN:0165-1781
1872-7123
DOI:10.1016/j.psychres.2012.03.042