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We examined the effects of cue luminance on visual orienting. Experiment 1 established that the commonly-found early facilitation and late inhibition of return (IOR) effects were independent of cue luminance with single cues in terms of their amplitude, although IOR was delayed in the low compared to the high luminance cue condition. In contrast, Experiment 2 revealed that, with dual cues of mixed luminance, both facilitation and IOR effects were found only with bright cues. When cues had equal luminance, however, there were cueing effects for two cued locations but only when the cues were bright. The data were accommodated in a neural network model of biased competition in which cueing effects emerge at more than one location provided input activation is sufficient to overcome competitive damping of the selection system. © 2012 Psychology Press, an imprint of the Taylor & Francis Group, an Informa business.

Original publication

DOI

10.1080/13506285.2012.655806

Type

Journal article

Journal

Visual Cognition

Publication Date

01/02/2012

Volume

20

Pages

170 - 210