Abrupt luminance change pops out; abrupt color change does not
article
The present studies investigated whether an isoluminant color change pops out, indicating that it can be detected preattentively in parallel. The results of Experi-ment 1 show that an abrupt color change presented on an equiluminant back-ground does not pop out. However, when the color change is accompanied by a small luminance change, it does pop out. The results of Experiment 2 show that the pop-out is fully due to the luminance change and not to the color change. The results of Experiments 3 and 4 show that the failure to find a pop-out at equilumi-nance cannot be attributed to the limited temporal resolution for chromatic stimuli. The results of Experiment 5 show that particular search strategies cannot be responsible for the obtained results. The results are in agreement with physiol-ogical findings regarding the parvo and magno systems.
Topics
TNO Identifier
8287
Source
Perception & Psychophysics, 57(5), pp. 637 - 644.
Pages
637 - 644
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