Shepard R N, Zare S L
Science. 1983 May 6;220(4597):632-4. doi: 10.1126/science.6836307.
A curved gray path, briefly flashed between two alternately displayed black dots, induced a compelling illusion of a single dot moving back and forth over that path. The minimum interval between dot onsets yielding this apparent motion increased not with the direct distance between the dots but, linearly, with the length of the curved path.
一条弯曲的灰色轨迹在两个交替显示的黑点之间短暂闪烁,引发了一种令人信服的错觉,即一个点在该轨迹上来回移动。产生这种表观运动的点起始之间的最小间隔不是随着点之间的直接距离增加,而是随着弯曲轨迹的长度呈线性增加。