Massironi M
Institute of Psychology, University of Verona, Italy.
Perception. 1988;17(5):681-94. doi: 10.1068/p170681.
It is possible to produce outline drawings that are perceived as representations of sheets or plates folded over themselves. However, only some of the many possible representations are immediately and necessarily perceived as such. Investigations were carried out to find out which elements must be included in a drawing if a subject is to perceive folding. Four necessary, though not individually sufficient, factors were detected. Other factors which are not necessary but which can intensify the perception of folding were also found. The four necessary factors are: (i) the existence of two phenomenically overlapping figures; (ii) at least one side of the upper figure must perfectly coincide with one side of the lower figure, this common side being defined as the folding line; (iii) the two phenomenically overlapping areas must be on the same side of the folding line; (iv) three segments must converge at the ends of the folding line. Some cognitive processes which appear to be involved in the phenomenon are also discussed.
有可能制作出被视为纸张或板材自身折叠后的轮廓图。然而，在众多可能的表示形式中，只有一些会立即且必然地被如此感知。开展了调查以弄清楚如果要让受试者感知到折叠，一幅图中必须包含哪些元素。检测到了四个必要因素，尽管单个因素并不充分。还发现了其他并非必要但可增强折叠感知的因素。这四个必要因素是：（i）存在两个现象上重叠的图形；（ii）上方图形的至少一侧必须与下方图形的一侧完美重合，这条公共边被定义为折叠线；（iii）两个现象上重叠的区域必须在折叠线的同一侧；（iv）三段必须在折叠线的末端交汇。还讨论了一些似乎与该现象相关的认知过程。
