1. A method comprising: receiving, with one or more processors, a therapy delivery element selection, wherein the therapy delivery element selection corresponds to a therapy delivery element selected for implantation in a patient; receiving, with the one or more processors, a set of therapy parameter values, the set of therapy parameter values defining stimulation to be modeled; retrieving, from a memory, an area of activation look-up table based on the therapy delivery element selection, the area of activation look-up table comprising a neuron representative grid, wherein each neuron representative of the neuron representative grid is associated with a plurality of activation thresholds, each threshold of the plurality of activation thresholds being associated with an angle of rotation around an axis, and wherein thresholds of the plurality of activation thresholds are organized into a plurality of activation threshold sets; and generating, with the one or more processors, a plurality of areas of activation based on the set of therapy parameter values, wherein each area of activation is generated based on a different threshold set of the plurality of activation threshold sets.