Title :
EMG Bandwidth used in Signal Whitening
Author :
Dasog, Meera ; Koirala, Kishor ; Pu Liu ; Clancy, Edward A.
Author_Institution :
Worcester Polytech. Inst., Worcester, MA, USA
Abstract :
It has been demonstrated that whitening the surface electromyogram (EMG) improves EMG amplitude (EMGσ) estimation. But, due to the wide bandwidth ranges often used when whitening, custom high-cost electrodes (bandwidth of ~2000 Hz) have been used. This paper investigates the effect of limiting the bandwidth for the whitened EMG data. The change in the average error of EMG to torque estimation was observed for 54 subjects over different whitening bandwidths ranging from 20-2000 Hz. We found that the average error remained the same for bandwidth limits between 600 Hz to 2000 Hz, suggesting that wider EMG electrodes were not helpful with this data set.
Keywords :
biomedical electrodes; electromyography; medical signal processing; EMG amplitude estimation; EMG bandwidth; EMG electrodes; EMG error; bandwidth limiting effect; custom high-cost electrodes; frequency 20 Hz to 2000 Hz; signal whitening; surface electromyogram; torque estimation; whitened EMG data; whitening bandwidths; Amplitude estimation; Bandwidth; Biological system modeling; Electrodes; Electromyography; Estimation; Torque;
Conference_Titel :
Bioengineering Conference (NEBEC), 2013 39th Annual Northeast
Conference_Location :
Syracuse, NY
Print_ISBN :
978-1-4673-4928-4
DOI :
10.1109/NEBEC.2013.87
