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Covert attention accelerates the rate of visual information processing

Open access
Carrasco, Marisa, McElree, Brian·2001·Proceedings of the National Academy of Sciences

Abstract

Whenever we open our eyes, we are confronted with an overwhelming amount of visual information. Covert attention allows us to select visual information at a cued location, without eye movements, and to grant such information priority in processing. Covert attention can be voluntarily allocated, to a given location according to goals, or involuntarily allocated, in a reflexive manner, to a cue that appears suddenly in the visual field. Covert attention improves discriminability in a wide variety of visual tasks. An important unresolved issue is whether covert attention can also speed the rate at which information is processed. To address this issue, it is necessary to obtain conjoint measures of the effects of covert attention on discriminability and rate of information processing. We used the response-signal speed-accuracy tradeoff (SAT) procedure to derive measures of how cueing a target location affects speed and accuracy in a visual search task. Here, we show that covert attention not only improves discriminability but also accelerates the rate of information processing.

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Metadata

Authors
Carrasco, M., & McElree, B.
Venue
Proceedings of the National Academy of Sciences
Published
2001-04-17
Volume
98
Issue
9
Pages
5363-5367
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2097454275
Cited by
347
References
6
FWCI
4.84
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Covert attention accelerates the rate of visual information processing. https://app.cochat.ai/papers/10.1073/pnas.081074098
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Carrasco, M., & McElree, B. (2001). Covert attention accelerates the rate of visual information processing. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.081074098

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