title: The excitation functional for magnetic stimulation of fibers.
abstract: Threshold problems in electric stimulation of nerve and muscle fibers have been studied from a theoretical standpoint using the excitation functional. Here the excitation functional is extended to magnetic stimulation of excitable nerve and muscle fibers. A unified derivation of the functional is done, for (non myelinated) nerve and muscle fibers, by means of the nonlinear cable equation with a Fitzhugh-Nagumo membrane model and a generalized Rattay's activating function. The identification problem of the excitation functional for magnetic stimulation, from strength-duration experimental data, is briefly considered.
authors.affiliation: School of Medicine, CLAEH, Punta del Este, Uruguay. dsuarezb@adinet.com.uy
authors.forename: D
authors.initials: D
authors.lastname: Suárez-Bagnasco
authors.forename: R
authors.initials: R
authors.lastname: Armentano-Feijoo
authors.forename: R
authors.initials: R
authors.lastname: Surez-Antola
mesh_terms: D000200:Action Potentials / Q000502:physiology* / Q000528:radiation effects*; D000818:Animals; D003198:Computer Simulation; D004307:Dose-Response Relationship, Radiation; D004558:Electric Stimulation / Q000379:methods*; D004574:Electromagnetic Fields; D006801:Humans; D008959:Models, Neurological; D009412:Nerve Fibers / Q000502:physiology* / Q000528:radiation effects*; D011829:Radiation Dosage