Beck J
University of Oregon, Department of Psychology, Eugene 97403.
Percept Psychophys. 1994 Oct;56(4):424-30. doi: 10.3758/bf03206734.
Perceived segregation in element-arrangement patterns composed of squares of equal size and luminance, but of two different hues, was investigated in two experiments. Element-arrangement patterns consist of two types of elements, arranged in alternating vertical stripes in the top and bottom regions and in a checkerboard pattern in the center region. Perceived segregation of the striped and checkerboard regions decreased with increasing luminance of the interspaces between the squares, a high-luminance surround, and the increased spacing of the squares. When the luminance of the horizontal interspaces was increased, the decrease in perceived segregation was greater than that when the luminance of the vertical interspaces was increased. Two explanations of the interference of the interspace luminance are discussed. One explanation is in terms of inhibitory interactions among cortical filters tuned to spatial frequency and orientation. A second explanation is in terms of interference with preattentive grouping processes.
在两个实验中，对由大小和亮度相等但色调不同的正方形组成的元素排列模式中的感知隔离进行了研究。元素排列模式由两种类型的元素组成，它们在顶部和底部区域以交替的垂直条纹排列，在中心区域以棋盘格模式排列。条纹区域和棋盘格区域的感知隔离随着正方形之间的间隙、高亮度环绕区域的亮度增加以及正方形间距的增大而降低。当水平间隙的亮度增加时，感知隔离的降低幅度大于垂直间隙亮度增加时的降低幅度。文中讨论了间隙亮度干扰的两种解释。一种解释是基于调谐到空间频率和方向的皮层滤波器之间的抑制性相互作用。另一种解释是基于对前注意分组过程的干扰。
