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A Study on Estimation of Motor Unit Location of Biceps Brachii Muscle using Surface Electromyogram  

Park, Jung-Ho (EMC)
Lee, Ho-Yong (School of Electrical and Computer Engineering, University of Seoul)
Jung, Chul-Ki (School of Electrical and Computer Engineering, University of Seoul)
Lee, Jin (Dept. of Computer & Control Engineering, Kangwon National University)
Kim, Sung-Hwan (School of Electrical and Computer Engineering, University of Seoul)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.47, no.3, 2010 , pp. 28-39 More about this Journal
Abstract
In this paper, a new method to estimate MU (motor unit) location in the short head of BIC (biceps brachii) muscle using surface EMG (electromyogram) is proposed. The SMUAP (single motor unit action potential) is generated from a MU located at certain depth from the skin surface. The depth is referred as MU location. For estimating muscle force precisely, the information of the MU location is required. The reference SMUAPs are simulated based on anatomical structure of human muscle, and compared with acquired real EMG signals using 3-channel surface EMG electrode. The proposed method was compared with the results of previous researchers and verified its accuracy by computer simulation. From the simulation result in case of the MU located in 8[mm], the average estimation error of proposed method was 0.01[mm]. But the average estimation error of Roeleveld's method was 2.33[mm] and Akazawa's method was 1.70[mm]. Therefore the proposed method was more accurate than the methods of previous researchers.
Keywords
motor unit; MU simulator; MU location; surface EMG; SMUAP;
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