Albert M K
Department of Information and Computer Science, University of California at Irvine 92717.
Perception. 1993;22(5):589-95. doi: 10.1068/p220589.
The role of symmetry in the perception of illusory contours has been a subject of controversy ever since Kanizsa proposed his theory of illusory contours based on Gestalt principles. Today it is widely agreed that illusory contours do not necessarily occur more readily with inducers that can be 'amodally' completed to symmetrical objects than with inducers that cannot. But the question of whether symmetrical inducers produce weaker illusory contours than do unsymmetrical ones is still controversial. A novel determinant of illusory contour strength, parallelism, is proposed. Experiments are reported which indicate that illusory contours induced by 'blobs' which have boundaries that are nearby and parallel to the illusory contour are weaker than illusory contours induced by blobs that do not have this property. It is suggested that the display that has been most widely used by researchers to support their claims for a weakening of illusory contours with symmetrical inducers is weak primarily because of parallelism.
自从卡尼萨基于格式塔原理提出他的错觉轮廓理论以来，对称性在错觉轮廓感知中的作用一直是一个有争议的话题。如今，人们普遍认为，与那些不能“无模态”地完成成对称物体的诱导物相比，那些可以“无模态”地完成成对称物体的诱导物并不一定会更容易产生错觉轮廓。但是，对称诱导物产生的错觉轮廓是否比不对称诱导物产生的错觉轮廓更弱，这个问题仍然存在争议。本文提出了一个错觉轮廓强度的新决定因素——平行性。报告的实验表明，由边界与错觉轮廓相近且平行的“斑点”诱导出的错觉轮廓，比由不具有此属性的斑点诱导出的错觉轮廓更弱。有人认为，研究人员最广泛使用的用以支持他们关于对称诱导物会削弱错觉轮廓这一观点的展示，主要是因为平行性才显得薄弱。
