Figure 1.

(A) Schematic illustration of the spatial profiles from Equations (2, 3) of the current spread in the stimulated neuronal population for the case of Ns = 4 stimulation sites and σ = 0.5. Stimulation sites are depicted by filled circles. (B) Stimulation signals ρk(t)P(t), , see Equation (2), for the 4-site CR stimulation protocol are shown by the same color as the corresponding stimulation sites from plot (A).