Fig. 4.

Results of Experiment 2. (a) Naïve subject XC’s psychometric curves for the 0–V, V–V, and Λ–V conditions. (b) Subject XC’s psychometric curves for the 0–Λ, Λ–Λ, and V–Λ conditions. Each row of the legends (top) includes icons to indicate the types of adapting and test stimuli used in each condition. For the no-adaptation, baseline conditions, only the test icons are shown (first rows). (c) The mean tilt aftereffect of the six subjects for each adaptation condition is shown as a rectangle. The error bars represent standard errors. The symbols represent individual subjects’ aftereffects; a given symbol represents the same subject across all summary figures (Figs. 2c, 4c, 6c, and 8c). XC’s results are represented by filled dots. The p value for each rectangle tests whether that aftereffect is significantly different from 0. The p value between two rectangles tests whether the two aftereffects are significantly different from each other. Two-tailed paired t-tests were used.