He Z J, Nakayama K
Department of Psychology, Harvard University, Cambridge, MA 02138, USA.
Proc Natl Acad Sci U S A. 1995 Nov 21;92(24):11155-9. doi: 10.1073/pnas.92.24.11155.
Although attention plays a significant role in vision, its spatial deployment and spread in the third dimension is not well understood. In visual search experiments we show that we cannot easily focus attention across isodepth loci unless they are part of a well-formed surface with locally coplanar elements. Yet we can easily spread our attention selectively across well-formed surfaces that span an extreme range of stereoscopic depths. In cueing experiments, we show that this spread of attention is, in part, obligatory. Attentional selectivity is reduced when targets and distractors are coplanar with or rest on a common receding stereoscopic plane. We conclude that attention cannot be efficiently allocated to arbitrary depths and extents in space but is linked to and spreads automatically across perceived surfaces.
尽管注意力在视觉中起着重要作用，但其在三维空间中的空间部署和传播尚未得到很好的理解。在视觉搜索实验中，我们表明，除非等深度位点是具有局部共面元素的良好形成表面的一部分，否则我们无法轻易地将注意力集中在这些位点上。然而，我们可以很容易地将注意力有选择地分散到跨越极广立体深度范围的良好形成表面上。在提示实验中，我们表明这种注意力的分散在一定程度上是必然的。当目标和干扰物与共同的后退立体平面共面或位于该平面上时，注意力的选择性会降低。我们得出结论，注意力不能有效地分配到空间中的任意深度和范围，而是与感知到的表面相关联并自动在其表面上传播。
