Finite-element simulation of human brain electric activity

The electric current distribution produced by dipoles in human brains is simulated by the finite-element method. Current dipoles are adopted to simulate the nerve sources in the brain. A finite-element formula related to dipole sources and anisotropic media is derived. An approach for creating a symmetrical stiffness matrix of the finite-element equation system in the computation of potential problems with anisotropic media is presented. The realistic shape of the head with anisotropic conducting media is simulated.