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Katzner, Steffen ORCID logoORCID: https://orcid.org/0000-0002-4424-2197; Busse, Laura ORCID logoORCID: https://orcid.org/0000-0002-6127-7754 and Treue, Stefan (2006): Feature-based attentional integration of color and visual motion. In: Journal of Vision, Vol. 6, No. 3: pp. 269-284

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Abstract

In four variants of a speeded target detection task, we investigated the processing of color and motion signals in the human visual system. Participants were required to attend to both a particular color and direction of motion in moving random dot patterns (RDPs) and to report the appearance of the designated targets. Throughout, reaction times (RTs) to simultaneous presentations of color and direction targets were too fast to be reconciled with models proposing separate and independent processing of such stimulus dimensions. Thus, the data provide behavioral evidence for an integration of color and motion signals. This integration occurred even across superimposed surfaces in a transparent motion stimulus and also across spatial locations, arguing against object- and location-based accounts of attentional selection in such a task. Overall, the pattern of results can be best explained by feature-based mechanisms of visual attention.

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