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Conjunction search revisited (1990)
| Venue: | Journal of Experimental Psychology: Human Perception and Performance |
| Citations: | 229 - 3 self |
BibTeX
@INPROCEEDINGS{Treisman90conjunctionsearch,
author = {Anne Treisman and Sharon Sato},
title = {Conjunction search revisited},
booktitle = {Journal of Experimental Psychology: Human Perception and Performance},
year = {1990},
pages = {459--478}
}
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Abstract
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 physi-ology 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. Objects in the real world vary in a large number of prop-erties, at least some of which appear to be coded by special-ized, independent channels or modules in the perceptual
Keyphrases
conjunction search perceptual segregation search rate feature-based inhibition unknown target serial search independent measure possible account unitary quot single-unit response discriminable feature large number distractor feature conjunction detector real world vary independent channel feature integration theory
