Title :
Chaotic activity during electrical stimulation of paralyzed muscle
Author :
Erfanian, Abbas ; Chizeck, Howard Jay ; Hashemi, Reza M.
Author_Institution :
Dept. of Biomed. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
fDate :
31 Oct-3 Nov 1996
Abstract :
In this paper, the authors consider the evoked EMG (EEMG) signal that is obtained using surface electrodes when the quadriceps muscles in paraplegic subjects are stimulated via percutaneous intramuscular electrodes. In this work, the authors explore the chaotic behavior of electrically stimulated muscle. It is found that the state space of the muscle exhibits a strange attractor which has a noninteger correlation dimension. In addition, the correlation dimension increases as the muscle becomes more fatigued
Keywords :
chaos; electromyography; medical signal processing; chaotic activity; correlation dimension; evoked EMG signal; functional electrical stimulation; muscle fatigue; noninteger correlation dimension; paralyzed muscle; paraplegic subjects; percutaneous intramuscular electrodes; quadriceps muscles; state space; strange attractor; surface electrodes; Autocorrelation; Chaos; Control systems; Delay effects; Electrical equipment industry; Electrical stimulation; Electrodes; Electromyography; Muscles; Time measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.647647
