DocumentCode :
601218
Title :
Estimation of time-varying human arm stiffness using electromyogram signal
Author :
Ahmadi-Pajouh, M.A. ; Towhidkhah, Farzad ; Moradi, Mohammad Hassan
Author_Institution :
Biomed. Eng. Dept., Amirkabir Univ. of Technol., Tehran, Iran
fYear :
2012
fDate :
20-21 Dec. 2012
Firstpage :
26
Lastpage :
30
Abstract :
Human arm stiffness is important in movement stability in unstable or novel environments. Therefore measurement of the arm stiffness is necessary to study on control mechanisms involved in stabilization and adaptation to environments dynamics. Previous techniques, did not measure time-varying stiffness explicitly. Here we introduce a novel method to estimate arm stiffness using EMG signals. In this method, muscles activation levels are related to joints torques and stiffness. We derived analytical relations to calculate arm stiffness using joints dynamics. This method was used to find arm stiffness profile in 12 subjects, before a reaching movement task. Results imply that this method can be used to find time-varying profile of the arm stiffness.
Keywords :
biomechanics; biomedical measurement; electromyography; torque; EMG; electromyogram signal; joints dynamics; joints torques; muscles activation levels; stiffness; time-varying human arm stiffness estimation; Arm model; EMG; Time-Varying Stiffness;
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.2012.6519654
Filename :
6519654
Link To Document :
بازگشت