Living body action current source presumption manner

摘要

PURPOSE: To provide a bio-action electric current source estimating method, being able to estimate easily and precisely a source of electric current in a living body. ;CONSTITUTION: A method makes use of a minimum norm to estimate a location, size and direction of an electric current source and comprises: (S1) with plural magnetic sensors, simultaneously detecting three-way components of right angle crossing in magnetic fields induced by a source of electric current; (S2) placing many lattice points in an objective body; (S3) applying minimum norm to solve relative formula for unknown source of electric current on each lattice point and for magnetic fields data of three-way components so as to determine the source of electric current on each lattice points; (S4) determining probabilities of existing electric current source on each lattice points according to sizes of respective electric current sources; (S5) dividing lattice points into plural groups according to the said probabilities; (S6) shifting lattice points near to the lattice points having the largest source of electric current in each divided groups; determining the current sources on each rearranged lattice points by applying minimum norm.;COPYRIGHT: (C)1995,JPO