Figure 7.

(A) Performance of the optimal model as a function of perturbation amplitude on the stimuli used in Experiment 1 and (B) Experiment 2. The solid and dashed lines correspond to the performance at large and small shape amplitudes, respectively. (C) Bars depict perturbation amplitude at 75% accuracy for the optimal model using subsets of dots (equivalently percent of available information), and lines show average perturbation amplitude at 75% accuracy for 10 observers at low (dotted) and high (dashed) presentation rates. The error-bars depict the SEM.