I just started to work on a human brain activity modeling in order to find a new model of sources, in order to solve the forward problem in EEG/MEG with a finite element method. Do you know the recent news in this field?
A very active researcher in the simulation of EEG/MEG is Dr C. Wolters (https://www.researchgate.net/profile/Carsten_Wolters/). You might refer to his profile as a starting point for literature. To my knowledge people most often still use the very old source models, like a direct potential approach using the principle of Saint Venant.