NDLI: Characterization of Stroke- and Aging-Related Changes in the Complexity of EMG Signals During Tracking Tasks

Content Provider	Springer Nature Link
Author	Ao, Di Sun, Rui Tong, Kai yu Song, Rong
Copyright Year	2014
Abstract	To explore the stroke- and aging-induced neurological changes in paretic muscles from an entropy point of view, fuzzy approximate entropy (fApEn) was utilized to represent the complexity of EMG signals in elbow-tracking tasks. In the experiment, 11 patients after stroke and 20 healthy control subjects (10 young and 10 age-matched adults) were recruited and asked to perform elbow sinusoidal trajectory tracking tasks. During the tests, the elbow angle and electromyographic (EMG) signals of the biceps brachii and triceps brachii were recorded simultaneously. The results showed significant differences in fApEn values of both biceps and triceps EMG among four groups at six velocities (p < 0.01), with fApEn values in the following order: affected sides of stroke patients < unaffected sides of stroke patients < age-matched controls < young controls. A possible mechanism underlying the smaller fApEn values in the affected sides in comparison with aged-matched controls and in the aged individuals in comparison with young controls might be the reduction in the number and firing rate of active motor units. This method and index provide evidence of neurological changes after stroke and aging by complexity analysis of the surface EMG signals. Further studies are needed to validate and facilitate the application in clinic.
Starting Page	990
Ending Page	1002
Page Count	13
File Format	PDF
ISSN	00906964
Journal	Annals of Biomedical Engineering
Volume Number	43
Issue Number	4
e-ISSN	15739686
Language	English
Publisher	Springer US
Publisher Date	2014-10-15
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fuzzy approximate entropy Arm-tracking EMG Stroke Aging Biomedicine general Biomedical Engineering Biophysics and Biological Physics Mechanics Biochemistry
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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