Fig 4. Optimal nonlinearities for cuts through parameter space.
A: Schematic showing regions of 3-dimensional parameter space: σup (purple), σdown (green), and κ (blue). Insets show the optimal nonlinearity corresponding to the like-colored point, along with the stimulus distribution (dashed gray curves). B: Slope of the optimal nonlinearity as each parameter is varied along the corresponding dashed axis in A. C: Offsets plotted in the same manner as B. Slopes and offsets are obtained from the exact solutions of the model.