The electric field induced during magnetic stimulation.
The electric field induced in tissue during magnetic stimulation is calculated. There are two sources of the electric field: charge and a time-dependent magnetic field: both sources are important in magnetic stimulation. Charge accumulation on the tissue surface tends to shield the nerve from the stimulus. The induced electric field is generally parallel to the tissue surface. Simulations of both peripheral and central nervous system stimulation are presented.
Roth
B J
BJ
Biomedical Engineering and Instrumentation Program, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892.
Cohen
L G
LG
Hallett
M
M
D004553:Electric Conductivity; D004574:Electromagnetic Fields; D006801:Humans; D008280:Magnetics; D008433:Mathematics; D009424:Nervous System Physiological Phenomena