Inverse source localization…

While the few hundred temporal curves obtained using M/EEG have a clear clinical interest, the measurements are made outside, or on the surface of the head, and hence only provide partial information on the localization of the sources of activity.

With a proper model of the head and the sources of this electromagnetic activity, it is possible to simulate the electrical propagation forward problem and to recover the sources corresponding to measurements using an inverse problem. Solving the inverse problem is the key to identifying and localizing brain areas responsible for the observed activity.