1. A computer-implemented method of dynamically modeling and displaying a passage of material or information between at least two spatially distributed objects in a body, comprising: creating a first data set of entities between which material or information is transferred; creating a second data set of channels connecting the entities; creating a third data set of types of material or information that each entity transfers via each channel; creating, using a processor, a dynamic map that includes a list of active entities, wherein the dynamic map is communicatively coupled to the active entities so as to provide information thereto; using the dynamic map in conjunction with the first, second, and third data sets to perform a simulation of the transfer of material or information between entities; and outputting the simulation results.