Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28212
Title: Characterization of stroke- and aging-related changes in the complexity of emg signals during tracking tasks
Authors: Ao, D
Sun, R
Tong, KY
Song, R
Keywords: Aging
Arm-tracking
EMG
Fuzzy approximate entropy
Stroke
Issue Date: 2014
Publisher: Kluwer Academic Publishers
Source: Annals of biomedical engineering, 2014 How to cite?
Journal: Annals of Biomedical Engineering 
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.
URI: http://hdl.handle.net/10397/28212
ISSN: 0090-6964
DOI: 10.1007/s10439-014-1150-1
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

3
Last Week
0
Last month
0
Citations as of Aug 18, 2017

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
0
Citations as of Aug 15, 2017

Page view(s)

38
Last Week
1
Last month
Checked on Aug 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.