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. 2013 Jul 22;6:5. doi: 10.3389/fneng.2013.00005

Figure 1.

Figure 1

(A) Schematic illustration of the spatial profiles D(x, k), k=1, 4¯ 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), k=1, 4¯, see Equation (2), for the 4-site CR stimulation protocol are shown by the same color as the corresponding stimulation sites from plot (A).