Finite Element method for a realistic head model of electrical brain activities

Three-dimensional finite element models provide a method to study the relationship between human scalp potentials and neural current sources inside the brain. This approach has the advantage over the boundary element method of being able to take into account anisotropies of the different conducting sub-volumes. The method has been evaluated in the particular case of a four-layer concentric sphere anisotropic head model for which an analytical formula is known. The effects of existence of an occipital hole on dipole localization through the inverse problem have been studied.