Graduate Institute of Biomedical Sciences, 38019China Medical University, Taiwan.
Research Institute of Electrical Communication, 13101Tohoku University, Japan.
Perception. 2022 Sep;51(9):658-671. doi: 10.1177/03010066221113225. Epub 2022 Aug 17.
Previous studies established that a salient collinear structure impairs local visual search. A display organization hypothesis states that the vertical grouping of elemental bars in the search display may selectively increase the salience of the local target in the background than that in the collinear distractor, leading to the collinear search impairment. Three displays were designed to test this hypothesis. A classical search display was adopted as a baseline. A diagonal search display was created with tilted bars, making perceptual organization diagonal and should reduce collinear search impairment. An illusory search display was designed by using abutting line illusion to emphasize the vertical grouping direction, which should increase collinear search impairment. A manipulation check was conducted with an online survey to understand the perceptual organization of the three displays. Results showed that the probability to perceive the stimuli grouping in the vertical direction was strongest in the illusory display and the least in the diagonal display. Nevertheless, the collinear search impairment did not vary with these manipulations, argue against the display organization hypothesis. We speculate that the search impairment might associate with the perceptual organization of the collinear distractor , rather than the perceptual organization of the background.
先前的研究已经证实，显著的共线结构会损害局部视觉搜索。显示组织假说指出，搜索显示中元素条的垂直分组可能会选择性地增加背景中局部目标的显著性，而不是共线干扰物的显著性，从而导致共线搜索障碍。设计了三个显示来测试这个假设。采用经典搜索显示作为基线。创建了一个带有倾斜条的对角线搜索显示，使感知组织呈对角线，这应该会减少共线搜索障碍。通过使用相邻线错觉设计了一个错觉搜索显示，以强调垂直分组方向，这应该会增加共线搜索障碍。通过在线调查进行了操作检查，以了解三个显示的感知组织。结果表明，在错觉显示中，感知到垂直方向上的刺激分组的可能性最强，而在对角线显示中则最小。然而，共线搜索障碍并没有随着这些操作而变化，这与显示组织假说相矛盾。我们推测，搜索障碍可能与共线干扰物的感知组织有关，而不是背景的感知组织。
