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Previewing distracters reduces their effective contrast.

Abstract:

In a visual search task, when half the distracters are presented earlier than the remainder ('previewed'), observers find the target item more efficiently than when all the items are presented together -- the preview benefit. We measured psychometric functions for contrast increments on Gabors that were presented as a valid preview for subsequent search, and when they were a non-predictive (dummy) preview. Sensitivity to contrast increments was lower (rightwards shift of the psychometric func...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MSD, Experimental Psychology
Journal:
Vision research
Volume:
47
Issue:
23
Pages:
2992-3000
Publication date:
2007-10-05
DOI:
EISSN:
1878-5646
ISSN:
0042-6989
URN:
uuid:8102e291-a2d0-4ae1-95d0-b21ea6121405
Source identifiers:
311472
Local pid:
pubs:311472

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