Dehaene S
Percept Psychophys. 1989 Jul;46(1):72-80. doi: 10.3758/bf03208076.
Treisman and Gelade's (1980) feature-integration theory of attention states that a scene must be serially scanned before the objects in it can be accurately perceived. Is serial scanning compatible with the speed observed in the perception of real-world scenes? Most real scenes consist of many more dimensions (color, size, shape, depth, etc.) than those generally found in search paradigms. Furthermore, real objects differ from each other along many of these dimensions. The present experiment assessed the influence of the total number of dimensions and target/distractor discriminability (the number of dimensions that suffice to separate a target from distractors) on search times for a conjunction of features. Search was always found to be serial. However, for the most discriminable targets, search rate was so fast that search times were in the same range as pop-out detection times. Apparently, greater discriminability enables subjects to direct attention at a faster rate and at only a fraction of the items in a scene.
特雷斯曼和吉拉德（1980）的注意力特征整合理论指出，在能够准确感知场景中的物体之前，必须对场景进行串行扫描。串行扫描与在现实世界场景感知中观察到的速度是否兼容？大多数真实场景包含的维度（颜色、大小、形状、深度等）比搜索范式中通常发现的要多得多。此外，真实物体在许多这些维度上彼此不同。本实验评估了维度总数和目标/干扰物可辨别性（足以将目标与干扰物区分开的维度数量）对特征结合搜索时间的影响。结果始终发现搜索是串行的。然而，对于最具可辨别性的目标，搜索速度非常快，以至于搜索时间与弹出式检测时间处于同一范围内。显然，更高的可辨别性使受试者能够以更快的速度将注意力指向场景中仅一小部分的项目。
