|
The Ehrenstein illusion is an optical illusion studied by the German psychologist (1899 – 1961) in which the sides of a square placed inside a pattern of concentric circles take an apparent curved shape (Figure 1).〔(A catalogue of illusions ) at Ritsumeikan University〕 Image:Ehrenstein.svg|Ehrenstein illusion (1) Image:Ehrenstein2.gif|Illusion (2) Image:Ehrenstein figure.svg|Illusion (3); adding a circle (bottom) destroys the illusion of a bright central disk. Sometimes the name "Ehrenstein" is associated with one of the illusory contour figures (Figure 2).〔(Ehrenstein illusion ) at Scholarpedia〕 The ends of the dark segments produce the illusion of circles. The apparent figures have the same color as the background, but appear brighter. A similar effect is obtained in the Kanizsa triangle. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ehrenstein illusion」の詳細全文を読む スポンサード リンク
|