Kanizsa-type subjective contours do not guide attentional deployment in visual search but fine termination contours do
Kanizsa-type subjective contours do not guide attentional deployment in visual search but fine termination contours do
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DOI：
10.3758/pp.70.3.477
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发表时间：
2008-04-01
期刊：
影响因子：
--
通讯作者：
Wolfe, Jeremy M.
中科院分区：
文献类型：
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作者：
Li, Xingshan;Cave, Kyle R.;Wolfe, Jeremy M.
我们使用视觉搜索来探讨kanizsa型主观轮廓和线端诱导的主观轮廓是否可以引导注意力。与之前的实验不同，我们比较了主观轮廓和真实亮度轮廓的搜索性能，我们让观察者搜索主观轮廓产生的方向或形状，而不是搜索轮廓本身的存在。当物体由亮度轮廓定义时，在另一个方向或形状的干扰物中寻找一个方向或形状的视觉搜索是有效的。在由kanizsa型主观轮廓定义的项目中，搜索效率要低得多。当项目是由线的末端引起的主观轮廓定义时，搜索仍然有效。kanizsa型主观轮廓与线端诱导的主观轮廓之间的差异与生理证据一致，表明这两种主观轮廓感知的大脑机制可能不同。
We used visual search to explore whether attention could be guided by Kanizsa-type subjective contours and by subjective contours induced by line ends. Unlike in previous experiments, we compared search performance with subjective contours against performance with real, luminance contours, and we had observers search for orientations or shapes produced by subjective contours, rather than searching for the presence of the contours themselves. Visual search for one orientation or shape among distractors of another orientation or shape was efficient when the items were defined by luminance contours. Search was much less efficient among items defined by Kanizsa-type subjective contours. Search remained efficient when the items were defined by subjective contours induced by line ends. The difference between Kanizsa-type subjective contour and subjective contours induced by line ends is consistent with physiological evidence suggesting that the brain mechanisms underlying the perception of these two kinds of subjective contours may be different.