New objects dominate luminance transients in setting attentional priority
New objects dominate luminance transients in setting attentional priority
复制标题
DOI：
10.1037/0096-1523.27.6.1287
复制
发表时间：
2001-12-01
影响因子：
2.1
通讯作者：
Yantis, S
中科院分区：
文献类型：
--
作者：
Enns, JT;Austen, EL;Yantis, S
物体的突然出现和现有物体特征的突然变化都会影响视觉搜索的优先级。然而，这些影响的直接比较还没有在受控条件下进行。在5个视觉搜索实验中，新对象的起始直接与旧对象的亮度变化进行比较。因素包括项目与背景的亮度对比度，亮度变化的幅度，以及这些变化与目标项目相关的概率。新对象在引导搜索方面始终更有效，使得具有非常低亮度对比度的新项目等同于经历亮度大变化的旧项目。一个重要的例外是一个旧的项目在对比度和极性上发生了变化，这和一个新对象的出现一样有效。这表明搜索优先级偏向于对象而不是情境变化。
Both the sudden appearance of an object and sudden changes in existing object features influence priority in visual search. However, direct comparisons of these influences have not been made under controlled conditions. In 5 visual search experiments, new object onsets were compared directly with changes in the luminance of old objects. Factors included the luminance contrast of items against the background, the magnitude of luminance change, and the probability that these changes were associated with the target item. New objects were consistently more effective in guiding search, such that a new item with very low luminance contrast was equivalent to an old item undergoing a large change in luminance. An important exception was an old item changing in contrast and polarity, which was as effective as the appearance of a new object. This indicates that search priority is biased toward object rather than situational changes.