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Dimensionally Specific Capture of Attention: Implications for Saliency Computation

1
Department of Psychology, Ben-Gurion University, Beersheba 8410501, Israel
2
School of Psychology, Bangor University, Bangor LL57 2AS, UK
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 12 February 2018 / Accepted: 13 February 2018 / Published: 17 February 2018
(This article belongs to the Special Issue Reflexive Shifts in Visual Attention)
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Abstract

Observers automatically orient to a sudden change in the environment. This is demonstrated experimentally using exogenous cues, which prioritize the analysis of subsequent targets appearing nearby. This effect has been attributed to the computation of saliency, obtained by combining features specific signals, which then feed back to drive attention to the salient location. An alternative possibility is that cueing directly effects target-evoked sensory responses in a feed-forward manner. We examined the effects of luminance and equiluminant color cues in a dual task paradigm, which required both a motion and a color discrimination. Equiluminant color cues improved color discrimination more than luminance cues, but luminance cues improved motion discrimination more than equiluminant color cues. This suggests that the effects of exogenous cues are dimensionally specific and may not depend entirely on the computation of a dimension general saliency signal. View Full-Text
Keywords: attention; exogenous cuing; saliency signal; luminance; motion discrimination; color discrimination attention; exogenous cuing; saliency signal; luminance; motion discrimination; color discrimination
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Burnett, K.E.; d’Avossa, G.; Sapir, A. Dimensionally Specific Capture of Attention: Implications for Saliency Computation. Vision 2018, 2, 9.

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