DocumentCode :
337219
Title :
The effects of coil current directions and waveforms on nerve excitation elicited by magnetic stimulation
Author :
Hyodo, Akira ; Kobayashi, Makoto ; Ueno, Shoogo
Author_Institution :
Dept. of Biomed. Eng., Tokyo Univ., Japan
Volume :
5
fYear :
1997
fDate :
1997
Firstpage :
2089
Abstract :
The amplitude and latency of compound muscle action potentials (CMAPs) during magnetic stimulation of peripheral nerves depend on the stimulus current direction and waveform. The output waveforms from currently used magnetic stimulators are mono- and polyphasic. The authors analyzed the nerve excitation elicited by four different combinations of coil current waveform/direction. It was shown that the axon is easily excited with biphasic coil current waveform and that the latency depends on coil current waveform, direction and strength. The simulation results are applicable to predict the change of excitation threshold and latency of CMAPs varied with the combination of coil current waveform/direction in magnetic stimulation of human peripheral nerves
Keywords :
biomagnetism; coils; electromyography; neurophysiology; coil current directions; coil current waveforms; compound muscle action potentials latency; human peripheral nerves; magnetic stimulation; monophasic waveforms; nerve excitation; output waveforms; peripheral nerves; polyphasic waveforms; Biomedical engineering; Coils; Delay; Humans; Magnetic stimulation; Muscles; Nerve fibers; Nervous system; Orthopedic surgery; Predictive models;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
ISSN :
1094-687X
Print_ISBN :
0-7803-4262-3
Type :
conf
DOI :
10.1109/IEMBS.1997.758762
Filename :
758762
Link To Document :
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