Kovács I, Julesz B
Laboratory of Vision Research, Rutgers University, Piscataway, NJ 08854.
Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7495-7. doi: 10.1073/pnas.90.16.7495.
Detection of fragmented closed contours against a cluttered background occurs much beyond the local coherence distance (maximal separation between segments) of nonclosed contours. This implies that the extent of interaction between locally connected detectors is boosted according to the global stimulus structure. We further show that detection of a target probe is facilitated when the probe is positioned inside a closed circle. To explain the striking contour segregation ability found here, and performance enhancement inside closed boundaries, we propose the existence of a synergetic process in early vision.
在杂乱背景下检测碎片化的闭合轮廓，其发生的范围远远超出了非闭合轮廓的局部连贯距离（各段之间的最大间距）。这意味着，局部相连的探测器之间的相互作用程度会根据全局刺激结构而增强。我们进一步表明，当探测目标位于一个闭合圆圈内时，对其的检测会更容易。为了解释此处发现的显著的轮廓分离能力以及闭合边界内的性能增强现象，我们提出在早期视觉中存在一种协同过程。
