1. A method, comprising: accessing a population-based therapeutic tractography map of a human brain; accessing a pre-operative medical image of a brain of a patient; creating a patient-specific therapeutic tractography map for the brain of the patient based, at least in part, on the population-based therapeutic tractography map and the pre-operative medical image; identifying a desired location for a deep brain stimulation (DBS) electrode in the brain of the patient based, at least in part, on the patient-specific therapeutic tractography map for the brain of the patient and a desired DBS therapeutic effect; identifying an actual post-operative location of the DBS electrode from a post-operative medical image of the brain of the patient; and identifying a parameter for a DBS stimulation to be performed to achieve the desired DBS therapeutic effect using the DBS electrode, where the parameter depends on the actual post-operative location of the DBS electrode, the therapeutic tractography map for the brain of the patient, and the desired therapeutic effect, where the desired therapeutic effect depends, at least in part, on activation of two or more target areas via a combination of two or more white matter pathways.