Influence of Line Segments in the Ebbinghaus Illusion

A program was implemented to experimentally investigate the effect of line segment differences on the Ebbinghaus illusion. In the experiment, Ebbinghaus figures were presented on the left side of the screen of the implemented program, and the subjective equivalent (PSE) was measured. Even for the same Ebbinghaus figure, significant differences were observed in the amount of illusion depending on the difference of line segments. This result suggests that the difference of line segments affects the Ebbinghaus illusion.