1. A method for imaging electrical current flowing in a body, the current defining a field outside the body, the method comprising: obtaining field data, by use of at least one of (a) EEG and (b) MEG, representative of the field at a selected time; obtaining a solution to the inverse problem posed by said field data; producing, based on said solution, a first image showing the current at a first resolution; scanning the body at the same said time as part of an MRI procedure; producing by said MRI procedure a second image showing the current at a second resolution; and combining said first and second images so as to produce an enhanced image of the current at a third resolution that is greater than the first and second resolution.