Fig. 4.

Results from Experiment 2: open-curvature aftereffect as a function of trial category. Aftereffects were measured in log aspect ratio (AR). A positive value indicates a repulsive aftereffect (e.g., a more curved adaptor making a test contour appear less curved), a negative value indicates an attractive aftereffect (e.g., a more curved adaptor making a test contour appear more curved), and zero indicates an absence of an aftereffect. Error bars represent ±1 SEM (adjusted for within-observer comparisons). Asterisks indicate statistical significance (*p < .05, **p < .01)