Dynamics of Attention in Depth: Evidence from Multi-Element Tracking
Dynamics of Attention in Depth: Evidence from Multi-Element Tracking
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DOI：
10.1068/p3432
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发表时间：
2002-12
期刊：
影响因子：
1.7
通讯作者：
Lavanya Viswanathan;E. Mingolla
中科院分区：
文献类型：
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作者：
Lavanya Viswanathan;E. Mingolla
我们使用多元素跟踪范式深入研究了注意力的分配。观察员被要求跟踪一个预定义的子集，从两个到八个元素的显示包含多达16个相同的移动元素。我们首先表明，深度线索，如双目视差和闭塞通过T-路口，提高性能的情况下，允许元素边界相交的运动在一个单一的frontoparallel平面的描绘中的多元素跟踪任务。我们还表明，分配的注意力在两个感知可区分的平面表面，无论是frontoparallel或后退在一个倾斜的角度和共面元素定义，是更容易分配的注意力在一个单一的表面。同样的结果没有发现，当注意力被要求部署在两种颜色的人群，而不是跨项目的单一颜色的项目。我们的研究结果表明，当表面信息不足以区分嵌入在这些表面的目标和干扰物时，在两个表面上的注意力分工有助于跟踪移动目标。最后一个实验，在不同的体积内移动的元素群体产生了类似的结果，这表明在三维空间分离，而不是限制在表面上，可以解释两个表面的情况下，提高性能。
We examined the allocation of attention in depth using a multi-element tracking paradigm. Observers were required to track a predefined subset of from two to eight elements in displays containing up to sixteen identical moving elements. We first show that depth cues, such as binocular disparity and occlusion through T-junctions, improve performance in a multi-element tracking task in the case where element boundaries are allowed to intersect in the depiction of motion in a single frontoparallel plane. We also show that the allocation of attention across two perceptually distinguishable planar surfaces, either frontoparallel or receding at a slanting angle and defined by coplanar elements, is easier than allocation of attention within a single surface. The same result was not found when attention was required to be deployed across items of two-color populations rather than across items of a single color. Our results suggest that, when surface information does not suffice to distinguish between targets and distractors that are embedded in these surfaces, division of attention across two surfaces aids in tracking moving targets. A final experiment with populations of elements moving within distinct volumes produced similar results, suggesting that spatial separation in three dimensions, rather than confinement to surfaces as such, may explain the improved performance for the two-surface case.