Stored color-form knowledge modulates perceptual sensitivity in search

Attention, Perception & Psychophysics
Theresa WildeggerGlyn W Humphreys

Abstract

We used signal detection analysis to examine the effects of stored color-form knowledge on visual search. Across four experiments, we showed robust effects of stored color-form knowledge on perceptual sensitivity, whereas the effects on response criteria varied. The effects on perceptual sensitivity were stronger when multiple items were present and when the color fell on the surface of the object. The benefit was found even when the correctly colored target had a low probability of occurrence in the experiment. In addition, the benefit was present across different display sizes, and the effects of increasing the exposure duration on detecting correctly colored targets were equal across different sizes of the display. The data suggest that color-form conjunctions are detected efficiently to activate stored color-form knowledge, and that this knowledge then influences early perceptual processing in a bottom-up manner. We discuss the implications for understanding the coding of conjunctive relations.

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Citations

Dec 19, 2015·Journal of Cognitive Neuroscience·Sarah J RappaportGlyn W Humphreys
Jul 23, 2015·Attention, Perception & Psychophysics·Giles M Anderson, Glyn W Humphreys
Jun 1, 2016·Journal of Cognitive Neuroscience·Eirini Mavritsaki, Glyn Humphreys
Jan 26, 2018·Psychological Research·A YankouskayaJ Sui
Nov 23, 2017·Attention, Perception & Psychophysics·Ting LuoShimin Fu
Sep 3, 2020·Psychonomic Bulletin & Review·Na Chen, Katsumi Watanabe
Oct 16, 2020·Journal of Vision·Robert G AlexanderSusana Martinez-Conde
Jul 21, 2021·Attention, Perception & Psychophysics·Nithin George, Tobias Egner

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