A method comprises: storing, in a memory of a computing device, (i) a preoperative image of patient tissue obtained using a first imaging modality and registered to a first frame of reference, and (ii) anatomical data defining a plurality of neural tracts in the patient tissue； receiving, at a processor connected with the memory, a location in the first frame of reference for application of a cortical stimulator pad to the patient tissue； receiving, at the processor, a range of influence of the cortical stimulator pad； based on the location and the range of influence, selecting, at the processor, an intersected neural tract from the plurality of neural tracts, a portion of the intersected neural tract being located within the range of influence； and controlling, at the processor, the display to render the preoperative image, the location and the intersected neural tract according to the first frame of reference.
