Bressan P, Vallortigara G
Dipartimento di Psicologia Generale, Università di Padova, Italy.
Perception. 1987;16(1):73-8. doi: 10.1068/p160073.
When a flat pattern composed of a solid ellipse with two symmetrical semirings (corresponding to the visible parts of a contour ellipse whose major axis is perpendicular to that of the solid ellipse) is slowly rotated in the frontoparallel plane, a compelling three-dimensional impression occurs. Subjects report seeing an egg-shaped object that is inserted into a circular ring: the two objects move solidly into three-dimensional space and a moving visual phantom is generated so that the ring appears completed by an illusory curved bar in the region closest to the observer during rotation. A number of variations of this illusion are presented. It is shown that stereokinetic phantoms (i) maintain the shape of the inducing elements; (ii) appear only after the stereokinetic transformation has taken place; and (iii) depend on the organization of the three-dimensional percept as a whole. Relations between stereokinetic phantoms and other completion phenomena are presented and discussed.
当一个由实心椭圆和两个对称半环组成的平面图案（对应于轮廓椭圆的可见部分，其长轴与实心椭圆的长轴垂直）在额状面中缓慢旋转时，会产生一种强烈的三维印象。受试者报告看到一个插入圆环中的蛋形物体：这两个物体牢固地移入三维空间，并产生一个移动的视觉幻象，使得在旋转过程中，圆环在最靠近观察者的区域似乎由一个虚幻的曲线条完成。本文展示了这种错觉的多种变体。结果表明，立体运动幻象：（i）保持诱导元素的形状；（ii）仅在立体运动转换发生后出现；（iii）取决于整个三维感知的组织。本文还介绍并讨论了立体运动幻象与其他完成现象之间的关系。
