1. A method comprising: displaying, on a user interface of a computing device, a graphical representation of a model of a network of interconnected anatomical structures of a patient, wherein the graphical representation of the network includes graphical links indicating functional relationships between the anatomical structures; receiving user input via the user interface specifying at least one effect of therapy delivered by an implantable medical device to at least one of the anatomical structures of the patient; and determining, with a processor, one or more therapy parameter values with which the implantable medical device generates therapy based on the user input and the functional relationships between the anatomical structures.