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- Title
When do luminance changes capture attention?
- Authors
Spehar, Branka; Owens, Caleb
- Abstract
In two experiments, we examined the ability of task-irrelevant changes in luminance to capture attention in an irrelevant singleton search. By using uniform increment and decrement arrays, we were able to create changes of the same absolute magnitude, but resulting in a singleton with either higher or lower contrast magnitude, relative to other elements in the search array. A condition where a singleton changed contrast polarity without a concomitant change in the overall contrast magnitude was also included. It was found that only luminance changes resulting in a singleton having increased contrast (or saliency) were effective in capturing attention. In addition, no attentional capture was observed when the irrelevant singleton was characterized by the equivalent amount of static luminance differences, suggesting a unique attentional prioritization of luminance changes that increase singleton saliency.
- Subjects
PSYCHOLOGICAL experiments; LUMINANCE (Photometry); ATTENTION research; TASK analysis; POLARITY (Psychology); PSYCHOLOGY
- Publication
Attention, Perception & Psychophysics, 2012, Vol 74, Issue 4, p674
- ISSN
1943-3921
- Publication type
Article
- DOI
10.3758/s13414-011-0266-8