On the role of object representations in substitution masking

Cathleen M. Moore, Alejandro Lleras

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)1171-1180
Number of pages10
JournalJournal of Experimental Psychology: Human Perception and Performance
Issue number6
StatePublished - Dec 2005
Externally publishedYes


  • Backward masking
  • Object representation
  • Object substitution masking
  • Perceptual organization

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Arts and Humanities (miscellaneous)
  • Behavioral Neuroscience


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