Treisman A, Sato S
Department of Psychology, University of California, Berkeley 94720.
J Exp Psychol Hum Percept Perform. 1990 Aug;16(3):459-78. doi: 10.1037//0096-1523.16.3.459.
Search for conjunctions of highly discriminable features can be rapid or even parallel. This article explores three possible accounts based on (a) perceptual segregation, (b) conjunction detectors, and (c) inhibition controlled separately by two or more distractor features. Search rates for conjunctions of color, size, orientation, and direction of motion correlated closely with an independent measure of perceptual segregation. However, they appeared unrelated to the physiology of single-unit responses. Each dimension contributed additively to conjunction search rates, suggesting that each was checked independently of the others. Unknown targets appear to be found only by serial search for each in turn. Searching through 4 sets of distractors was slower than searching through 2. The results suggest a modification of feature integration theory, in which attention is controlled not only by a unitary "window" but also by a form of feature-based inhibition.
对高度可区分特征的联结进行搜索可以很快，甚至是并行的。本文探讨了三种可能的解释，分别基于：（a）知觉分离；（b）联结探测器；以及（c）由两个或更多干扰特征分别控制的抑制作用。颜色、大小、方向和运动方向的联结的搜索速度与知觉分离的一项独立测量密切相关。然而，它们似乎与单个神经元反应的生理学无关。每个维度对联结搜索速度的贡献是累加的，这表明每个维度都是独立于其他维度进行检查的。未知目标似乎只能通过依次对每个目标进行串行搜索来找到。在4组干扰物中进行搜索比在2组中进行搜索要慢。研究结果表明需要对特征整合理论进行修正，即注意力不仅由一个统一的“窗口”控制，还受一种基于特征的抑制形式控制。
