Attentional signatures of perception: multiple object tracking reveals the automaticity of contour interpolation.
Attentional signatures of perception: multiple object tracking reveals the automaticity of contour interpolation.
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DOI：
10.1037/a0020674
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发表时间：
2011-06
期刊：
影响因子：
--
通讯作者：
Kellman PJ
中科院分区：
文献类型：
--
作者：
Keane BP;Mettler E;Tsoi V;Kellman PJ
多目标跟踪(MOT)是观察者试图在移动的干扰物中跟踪多个目标的注意任务。轮廓内插是一种感知过程，它根据周围边(诱导器)的时空关系填充不可见的边。在五个实验中，我们通过内插对跟踪的影响来探索内插的自动性。我们发现：a)当目标和干扰物的边缘共同形成动态虚幻或遮挡轮廓时，跟踪精度下降；b)当内插将所有四个目标捆绑在一起时，跟踪性能提高；c)当内插强度减弱时(通过改变诱导边缘的大小或相对方向)，跟踪效果消失；d)真实轮廓和内插轮廓对跟踪的影响相似，只是真实轮廓可以更有效地将注意力转移到干扰物上。这些结果表明，内插的特征--尤其是它的自动性--可以通过它的注意影响或跟踪中的“特征”来揭示。我们的结果还表明，相对详细的对象表示是并行形成的，并且当它们与场景分割相关时，这些表示可以影响跟踪。
Multiple object tracking (MOT) is an attentional task wherein observers attempt to track multiple targets among moving distractors. Contour interpolation is a perceptual process that fills-in non-visible edges on the basis of how surrounding edges (inducers) are spatiotemporally related. In five experiments, we explored the automaticity of interpolation through its influences on tracking. We found that: a) when the edges of targets and distractors jointly formed dynamic illusory or occluded contours, tracking accuracy worsened; b) when interpolation bound all four targets together, performance improved; c) when interpolation strength was weakened (by altering the size or relative orientation of inducing edges), tracking effects disappeared; and d) real and interpolated contours influenced tracking comparably, except that real contours could more effectively shift attention toward distractors. These results suggest that interpolation’s characteristics—and, in particular, its automaticity—can be revealed through its attentional influences or “signatures” within tracking. Our results also imply that relatively detailed object representations are formed in parallel, and that such representations can affect tracking when they become relevant to scene segmentation.
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DOI：
10.1073/pnas.0702685104
发表时间：
2007-08-14
影响因子：
11.1
作者：
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通讯作者：
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影响因子：
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影响因子：
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作者：
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