Figure 21.

Experiment 1: Parameters fitted per condition in a descriptive model that assumes that responses follow a mixture of a von Mises distribution centered at the target orientation, a uniform distribution reflecting guesses, and von Mises distributions centered at the distractor orientations. (A) Concentration parameter of the von Mises distribution. (B) Weight to the uniform distribution. (C) Weight to nontarget responses. Note that this descriptive model has no fewer than 48 parameters (16 conditions, three parameters per condition) and the parameter values are therefore less reliable than those of the more constrained mixture model used for Figure 5, Table 3, and Table 4; this is also reflected in the large error bars.