title: Spatial relationships in electrostimulation: application to electromagnetic field standards.
abstract: Spatial relationships in electrostimulation are examined with a myelinated nerve model. Excitation thresholds are determined for: 1) terminated axon within a locally constant electric field; 2) bent axon within a locally constant field; and 3) a field of finite extent over the affected axon. For application to electromagnetic field standards, the minimum excitation threshold of the in situ electric field applies to a straight, terminated axon; a field measurement averaging distance of 5 mm is recommended.
authors.affiliation: Johns Hopkins University, Applied Physics Laboratory and Metatec Associates, 12516 Davan Drive, Silver Spring, MD 20904, USA. jpatrickreilly@erols.com
authors.forename: J Patrick
authors.initials: JP
authors.lastname: Reilly
authors.forename: Alan M
authors.initials: AM
authors.lastname: Diamani
mesh_terms: D000200:Action Potentials / Q000502:physiology / Q000528:radiation effects*; D001369:Axons / Q000502:physiology / Q000528:radiation effects / Q000648:ultrastructure; D003198:Computer Simulation; D004558:Electric Stimulation; D004599:Electric Stimulation Therapy / Q000592:standards; D004781:Environmental Exposure / Q000592:standards; D008564:Membrane Potentials / Q000502:physiology / Q000528:radiation effects; D008954:Models, Biological; D009413:Nerve Fibers, Myelinated / Q000502:physiology* / Q000528:radiation effects* / Q000648:ultrastructure