Araragi Yukyu, Sugimoto Yu
Institute of Human Sciences, Shimane University, 1060 Nishikawatsu-cho, Matsue-shi, Shimane, 690-8504, Japan.
Faculty of Law and Literature, Shimane University, Matsue-shi, Japan.
Atten Percept Psychophys. 2019 Jul;81(5):1579-1588. doi: 10.3758/s13414-019-01673-z.
The present study examined whether luminance values of an edge between regions affect figure-ground perception. A dark-gray or light-gray region was presented on the left (or upper) or right (or lower) side of an edge. Observers reported which region was perceived as a figure. The results in the 0.2° edge width condition showed that dark-gray regions with low luminance edges were perceived as a figure significantly more often than dark-gray regions with high luminance edges. The edge luminance effect occurred, partly occurred, and did not occur when the edge widths were 0.2, 0.5, and 0.8° of visual angle, respectively. These results showed that luminance values of the edge between the regions affected figure-ground perception, and that regions with luminance values closer to that of the edge between the regions were perceived as a figure more often, but only when the edge width was narrow. The edge luminance effect occurred less often as the edge width was increased and would be attributed to similarity grouping between edge and region.
本研究考察了区域之间边缘的亮度值是否会影响图形-背景感知。在边缘的左侧（或上方）或右侧（或下方）呈现一个深灰色或浅灰色区域。观察者报告哪个区域被感知为图形。在0.2°边缘宽度条件下的结果表明，具有低亮度边缘的深灰色区域比具有高亮度边缘的深灰色区域更常被感知为图形。当边缘宽度分别为0.2、0.5和0.8°视角时，边缘亮度效应分别出现、部分出现和未出现。这些结果表明，区域之间边缘的亮度值会影响图形-背景感知，并且亮度值更接近区域之间边缘亮度值的区域更常被感知为图形，但这仅在边缘宽度较窄时成立。随着边缘宽度增加，边缘亮度效应出现的频率降低，这可能归因于边缘与区域之间的相似性分组。
