A system for visualizing clinical effects, the system comprising: a display; and a computer processor coupleable to the display and configured and arranged to perform the following actions: obtain, for each of a plurality of 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 plurality of stimulation instances, a tag, selected from a plurality of tags, to each one of a plurality of voxels within the region stimulated during the stimulation instance, wherein the tag is selected based on the at least one assessment for the stimulation instance, wherein the plurality of tags comprises a first tag indicating absence of stimulation effects and stimulation side effects, a second tag indicating presence of a stimulation effect and absence of stimulation side effects, a third tag indicating presence of a stimulation effect and presence of a stimulation side effect, and a fourth tag indicating absence of stimulation effects and presence of a stimulation side effect; for each voxel of the plurality of voxels, assign a voxel type, selected from a plurality of voxel types, based on the tags assigned to that voxel for the plurality of stimulation instances; display, on the display, a representation of a plurality of the voxels with each of the displayed voxels having a graphical feature associated with the voxel type assigned to that voxel; and determine a stimulation region based on the assignment of voxel types and generate a set of stimulation parameters to stimulate the stimulation region. a display; and a computer processor coupleable to the display and configured and arranged to perform the following actions: obtain, for each of a plurality of 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 plurality of stimulation instances, a tag, selected from a plurality of tags, to each one of a plurality of voxels within the region stimulated during the stimulation instance, wherein the tag is selected based on the at least one assessment for the stimulation instance, wherein the plurality of tags comprises a first tag indicating absence of stimulation effects and stimulation side effects, a second tag indicating presence of a stimulation effect and absence of stimulation side effects, a third tag indicating presence of a stimulation effect and presence of a stimulation side effect, and a fourth tag indicating absence of stimulation effects and presence of a stimulation side effect; for each voxel of the plurality of voxels, assign a voxel type, selected from a plurality of voxel types, based on the tags assigned to that voxel for the plurality of stimulation instances; display, on the display, a representation of a plurality of the voxels with each of the displayed voxels having a graphical feature associated with the voxel type assigned to that voxel; and determine a stimulation region based on the assignment of voxel types and generate a set of stimulation parameters to stimulate the stimulation region. obtain, for each of a plurality of 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 plurality of stimulation instances, a tag, selected from a plurality of tags, to each one of a plurality of voxels within the region stimulated during the stimulation instance, wherein the tag is selected based on the at least one assessment for the stimulation instance, wherein the plurality of tags comprises a first tag indicating absence of stimulation effects and stimulation side effects, a second tag indicating presence of a stimulation effect and absence of stimulation side effects, a third tag indicating presence of a stimulation effect and presence of a stimulation side effect, and a fourth tag indicating absence of stimulation effects and presence of a stimulation side effect; for each voxel of the plurality of voxels, assign a voxel type, selected from a plurality of voxel types, based on the tags assigned to that voxel for the plurality of stimulation instances; display, on the display, a representation of a plurality of the voxels with each of the displayed voxels having a graphical feature associated with the voxel type assigned to that voxel; and determine a stimulation region based on the assignment of voxel types and generate a set of stimulation parameters to stimulate the stimulation region.