Evaluation of EMG features of trunk muscles during flexed postures

Author

Naji, M. ; Firoozabadi, Mohammad ; Kahrizi, S.

Author_Institution

Dept. of Biomed. Eng., Islamic Azad Univ., Dezful, Iran

fYear

2012

fDate

20-21 Dec. 2012

Firstpage

71

Lastpage

74

Abstract

Flexed postural tasks are frequently involved in daily activities, this paper evaluated a wide range of trunk muscle electromyogram (EMG) features to find the best feature spaces that discriminate among different trunk flexion angles. Using Davies-Bouldin index (DBI) and Calinski-Harabasz index (CHI) it was found that zero crossings, mean power frequency, median power frequency, and second order cumulants of extensor muscles´ EMG, independent of holding load level and electrode location (right or left side of muscle) are the most sensitive features to trunk flexion angle variation.

Keywords

biomedical electrodes; electromyography; feature extraction; medical signal processing; Calinski-Harabasz index; Davies-Bouldin index; EMG feature evaluation; daily activity; electrode location; extensor muscle EMG; feature spaces; flexed posture tasks; holding load level; power frequency; second order cumulants; trunk flexion angle variation; trunk muscle electromyogram feature evaluation; EMG; Feature evaluation; Postural tasks; Trunk muscles;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering (ICBME), 2012 19th Iranian Conference of

Conference_Location

Tehran

Print_ISBN

978-1-4673-3128-9

Type

conf

DOI

10.1109/ICBME.2012.6519660

Filename

6519660