Lp-normalized minimum-L1-norm solution of the biomagnetic inverse problem

Depending on reconstruction models, estimation of biomagnetic sources may require compensation for sensoring bias. For a minimum-L₁-norm approach such as selective minimum-norm (SMN) method, L_p-normalization of the lead-field vectors is a theoretically suitable compensation technique. This theory and an experimental evaluation are presented by using a three-dimensional sphere model. The evaluation gives a moderate range of the normalization parameter p which prevents location errors from exceeding the grid interval of the model. L₂-normalization is in the middle of this range