He Z J, Nakayama K
Department of Psychology, Harvard University, Cambridge, Massachusetts 02138.
Nature. 1992 Sep 17;359(6392):231-3. doi: 10.1038/359231a0.
Often implicit in the interpretation of visual search tasks is the assumption that the detection of targets is determined by the feature-coding properties of low-level visual processing. But higher level processes have also been implicated as visual search ability is enhanced in a depth plane or when two-dimensional shapes are interpreted as three-dimensional forms. Here we manipulate binocular disparity to degrade visual search, so that otherwise identical features become parts of surfaces through perceptual completion, rendering them less clearly distinguishable as targets and distractors. Our results indicate that visual search has little or no access to the processing level of feature extraction but must have as an input a higher level process of surface representation.
在视觉搜索任务的解释中，通常隐含着这样一种假设，即目标的检测是由低级视觉处理的特征编码属性决定的。但随着在深度平面中视觉搜索能力的增强，或者当二维形状被解释为三维形式时，高级处理过程也被认为与之相关。在这里，我们通过操纵双眼视差来降低视觉搜索能力，以便在感知完成时，原本相同的特征成为表面的一部分，使它们作为目标和干扰物的可区分性降低。我们的结果表明，视觉搜索几乎无法触及特征提取的处理水平，但必须将表面表征的高级处理过程作为输入。
