Visual search for a motion singleton among coherently moving distractors

Department of Psychology, Bielefeld University, PO Box 100131, 33501, Bielefeld, Germany.
Psychological Research (Impact Factor: 2.47). 04/2006; 70(2):103-16. DOI: 10.1007/s00426-004-0194-5
Source: PubMed


In the current study, we tested whether search for a visual motion singleton presented among several coherently moving distractors can be more efficient than search for a motion stimulus presented with a single distractor. Under a variety of conditions, multiple spatially distributed and coherently moving distractors facilitated search for a uniquely moving target relative to a single-motion-distractor condition (Experiments 1, 3, and 4). Color coherencies among static distractors were not equally effective (Experiments 1 and 2). These results confirm that humans are highly sensitive to antagonistically directed motion signals in backgrounds compared with spatially more confined regions of visual images.

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    • "On the basis of the preemptive-control hypothesis , we also expected that the capture effect of the better matching colour singleton in a current trial is not a mere stimulus-driven consequence of whether the preceding trial's target had or had not the same colour as the present trial's nontarget singleton (cf. Horstmann & Ansorge, 2006). This expectation was confirmed in all of the experiments. "
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