Dresp B
Laboratoire de Psychologie Expérimentale, CNRS, Université Paris V, France.
Percept Psychophys. 1992 Nov;52(5):562-70. doi: 10.3758/bf03206718.
In two experiments, brightness enhancement of the illusory surface in the Kanizsa square was investigated by means of a brightness matching procedure. The results show that specific properties of the inducing elements such as size, spacing, and luminance have effects on the matching threshold that are similar to those previously obtained in experiments on simultaneous contrast. The data from a third experiment demonstrate that increment thresholds measured within the Kanizsa square are elevated when the target is flashed on a position close to the inducing elements. The thresholds decrease considerably in the center of both test and control figures (representing or not representing an illusory square). These observations suggest that low-level mechanisms are likely to explain local brightness differences within the configurations but not global figure brightness. In other words, local contrast seems to generate brightness information that "sketches out" surfaces at their surrounds but does not "fill" them "in."
在两项实验中，通过亮度匹配程序研究了卡尼兹方块中虚幻表面的亮度增强。结果表明，诱导元素的特定属性，如大小、间距和亮度，对匹配阈值有影响，这些影响与之前在同时对比实验中获得的影响相似。第三个实验的数据表明，当目标在靠近诱导元素的位置闪烁时，在卡尼兹方块内测量的增量阈值会升高。在测试图和控制图（代表或不代表虚幻方块）的中心，阈值会大幅降低。这些观察结果表明，低水平机制可能解释了构型内的局部亮度差异，但不能解释整体图形亮度。换句话说，局部对比度似乎产生了亮度信息，这些信息在其周围“勾勒”出表面，但并没有“填充”它们。
