Test-Retest Repeatability of Surface Electromyography Measurement for Hand Gesture

• Published in: 2008 2nd International Conference on Bioinformatics and Biomedical Engineering Vol. 2; pp. 1923 - 1926
• Main Authors: Lantz, Vuokko, Chen, Xiang, Li, Qiang, Yang, Ji-Hai, Wang, Kong-Qiao
• Format: Conference Proceeding Journal Article
• Language: English
• Published: IEEE 2008
• Subjects: Control systems; Electrodes; Electromyography; Electronic equipment testing; Fingers; Motion control; Muscles; Pattern recognition; System testing; Wrist
• ISBN: 9781424417476; 1424417473
• ISSN: 2151-7614; 2151-7622
• DOI: 10.1109/ICBBE.2008.810

This study explores the test-retest repeatability of surface EMG measurements during hand gesture tasks across days and across subjects. Subjects took part in the data collection experiments on five separate days in a four-week time period. Surface EMG (sEMG) data was collected from the forearm. Intrasubject and intersubject test-retest repeatability of mean absolute values (MAV) and four-order AR model coefficients derived from 8-channel sEMG measurements were investigated using the coefficients of multiple correlation (CMCs) and coefficients of variation (CVs). Experimental results indicate moderate to high test-retest reliability for MAV and AR coefficients of sEMG measurements for nine of the ten studied hand gestures. The differences in test-retest repeatability among the hand gesture tasks also provide some insight into the effects of individual differences, electrode placement and gesture-specific characteristic of sEMG measurement.