A system for visualizing clinical effects can perform the following actions: obtain, for each of multiple stimulation instances, an estimation of a region stimulated during the stimulation instance and at least one assessment for at least one stimulation effect or stimulation side effect； assign, for each of the stimulation instances, a tag, selected from multiple tags, to each one of multiple voxels within the region stimulated during the stimulation instance, where the tag is selected based on the at least one assessment for the stimulation instance； and assign a voxel type, selected from multiple voxel types, to each of multiple voxels based on the tags assigned to the voxels. Optionally, the actions can also include display, on a display, a representation of multiple voxels with each of the displayed voxels having a graphical feature associated with the voxel type assigned to that voxel.
