Abstract: An embodiment of the present invention relates to a method for visualizing at least one human or animal brain segment in order to aid a stimulation or manipulation of the brain, said method comprising the steps of: (a) predicting the localization of where a stimulation or manipulation effect is or would be, if and when initiated, and determining at least one target brain segment which is or would be stimulated or manipulated; (b) evaluating whether at least one brain segment is functionally correlated to said at least one target brain segment; (c) providing image data which visualize the at least one target brain segment and/or at least one of the correlated brain segments as evaluated in step (b); and (d) displaying the image data.