1. A method comprising: (a) taking fMRI activity measurements of at least one localized region of a brain of a subject who is inside a fMRI scanner; (b) communicating a representation of said activity measurements to said subject using a computer executable logic; and (c) training said subject while inside said fMRI scanner to use said representation of said activity measurements to control said activity, wherein said representation is communicated in the form of presenting a display of said subject's level of success in modulating said activity in said brain to said subject.