Law Mark B, Abrams Richard A
Washington University, St. Louis, Missouri, USA.
Percept Psychophys. 2002 Oct;64(7):1017-27. doi: 10.3758/bf03194753.
In a series of experiments, we examined the effect of perceptual objects on visual attentional processing in the presence of spatially cued attentional selection. Subjects made speeded judgments about two visual elements that were either both on the same object or on two different objects. Judgments were faster when the elements were on the same object than when they were on different objects, revealing an object advantage. Importantly, the object advantage remained even when either exogenous or endogenous spatial cues were used to direct the subjects' attention to a part of the display, contrary to earlier findings of other researchers. The object advantage, however, did disappear when the stimulus duration was shortened substantially. The results show that object-based selection is pervasive and is not diminished by the act of selective attention. The results are discussed in terms of their implications for the mechanisms that underlie attentional selection.
在一系列实验中，我们研究了在存在空间线索引导的注意力选择的情况下，感知对象对视觉注意力加工的影响。受试者对两个视觉元素进行快速判断，这两个元素要么都在同一对象上，要么在两个不同对象上。当元素在同一对象上时，判断速度比在不同对象上时更快，这揭示了一种对象优势。重要的是，即使使用外源性或内源性空间线索将受试者的注意力引导至显示屏的一部分，对象优势仍然存在，这与其他研究人员早期的发现相反。然而，当刺激持续时间大幅缩短时，对象优势确实消失了。结果表明，基于对象的选择是普遍存在的，并且不会因选择性注意行为而减弱。我们根据这些结果对注意力选择背后的机制的影响进行了讨论。
