Abstract
In their 2003 article, Abrams and Christ found that the onset of motion captured attention more effectively than either the offset of motion or continuous motion. Abrams and Christ conceptualized the capture to be occurring at a level higher than does detection of luminance changes in the stimulus. To examine this claim, in the present experiments we replicated their critical experiment but used isoluminant stimuli, which do not produce the low-level luminance transients typically associated with motion. Under isoluminant conditions, we found a pattern of results very similar to that found previously with luminance-defined stimuli, indicating that attention can be prioritized on the basis of perceived motion onset by an object in the absence of low-level luminance transients. This may reflect an evolutionary adaptation to bias attention toward objects that exhibit characteristics of animacy, such as abruptly changing from a static to a dynamic state.
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The work was supported by a grant from the Natural Sciences and Engineering Council of Canada to J.P.
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Guo, R.M., Abrams, R.A., Moscovitch, M. et al. Isoluminant motion onset captures attention. Atten Percept Psychophys 72, 1311–1316 (2010). https://doi.org/10.3758/APP.72.5.1311
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DOI: https://doi.org/10.3758/APP.72.5.1311