Figure 2.

Expected gain and optimal strategy. A, Illustration of the distribution of perturbed reach endpoints x_fb for reaches with aim point x_aim (indicated by the black vertical line). B, Experimenter-imposed rewards (black) and penalties (gray). The probability of hitting the target or penalty is indicated by the black and gray cross-hatching in A. C, Expected gain as a function of aim point. The black square indicates the expected gain for the example in A. The black circle corresponds to the optimal aim point x_opt resulting in maximum expected gain.