Cylindrical Model for Neural Stimulation with Magnetic Fields
Electrical excitation of motor neurons in the brain cortex, or peripheral neurons, and observation of evoked responses have been extensively used in research and medical practice. Until mid 1980’s, excitation had been obtained with current pulses produced either by implanted or external electrodes applied near the neuron. Magnetic field stimulation offers the advantages that it is a non-invasive, non-contact method which produces minimal discomfort to the patient as only low density current flows through skin pain receptors during the procedure (Amassian et al., 1989; Barker et al., 1987; Freeston et al., 1984). Magnetic stimulation of brain, spinal cord, and peripheral nerves has been used to diagnose various medical conditions associated with the abnormal conduction of motor pathways (Barker et al., 1987; Chokroverty, 1990; Evans et al., 1988; Hallett and Cohen, 1989). It has also been used in mapping the motor-cortex (Cohen et al., 1988; Benecke et al., 1988).
KeywordsMagnetic Stimulation Cylindrical Model Neural Stimulation Coil Element Total Electric Field
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