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On the role of object representations in substitution masking
Journal article   Peer reviewed

On the role of object representations in substitution masking

Cathleen M Moore and Alejandro Lleras
Journal of experimental psychology. Human perception and performance, Vol.31(6), pp.1171-1180
12/2005
DOI: 10.1037/0096-1523.31.6.1171
PMID: 16366782

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Abstract

Three experiments were conducted to investigate the role of object representations in object substitution masking (OSM). OSM occurs when a very sparse mask is presented simultaneously with a target stimulus and the target offsets first, leaving the mask to linger in the display for some time. Results confirm earlier claims that there is an isolatable object-level component to OSM and indicate that a target can be protected from OSM if, prior to offsetting, it can be represented as a distinct object from the mask. When the mask was presented as sliding past the target (Experiment 1), as jiggling independently of the target (Experiment 2), or in a different color from the target (Experiment 3), OSM was reduced or eliminated. This suggests that OSM reflects basic updating processes that allow the perception of continuity of object identity over change.
Visual Perception Perceptual Masking Visual Acuity Humans

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