Figure 5.

Stimuli and methods of Experiment 2. (A) Trial procedure of the appearance discrimination task. The distorted eidolons were presented either before (presaccadic condition) or after a saccade (postsaccadic condition). Participants had to compare the distortion of the eidolon in one trial to the overall average distortion across all previous trials. (B) Example psychometric functions for a participant show the proportion of distortion-higher responses over distortion in reach from 1 to 6 pixels, in presaccadic (black) and postsaccadic (gray) conditions. Vertical lines indicate the points of subjective equality (PSE). (C) Trial procedure of the change discrimination task. Distortion either increased or decreased during a saccade. Participants had to indicate the direction of change. (D) Example psychometric functions for a participant show the proportion of distortion-increase responses over changes in distortion for blank (gray) and no blank (black) conditions. Negative values indicate a reduction in distortion, positive values indicate an increase in distortion. Vertical lines represent points of subjective stability (PSS). Note that on the y-axis label the proportion distortion increase is indicated with an arrow to differentiate it from proportion distortion higher (than mean) responses in (B). On the x-axis label, the distortion decrease to increase is indicated with arrows to differentiate it from low to high distortion in (B).