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Real-world visual search is dominated by top-down guidance

Real-world visual search is dominated by top-down guidance

Vision Research 46(24): 4118-4133

How do bottom-up and top-down guidance signals combine to guide search behavior? Observers searched for a target either with or without a preview (top-down manipulation) or a color singleton (bottom-up manipulation) among the display objects. With a preview, reaction times were faster and more initial eye movements were guided to the target; the singleton failed to attract initial saccades under these conditions. Only in the absence of a preview did subjects preferentially fixate the color singleton. We conclude that the search for realistic objects is guided primarily by top-down control. Implications for saliency map models of visual search are discussed.

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Accession: 012486241

Download citation: RISBibTeXText

PMID: 17005231

DOI: 10.1016/j.visres.2006.08.008

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