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Perceptual completion and object-based representations in short-term visual memory.

Research output: Contribution to journalJournal article


Journal publication date1/07/2003
JournalMemory and Cognition
Number of pages15
Original languageEnglish


Object-based representations in visual short-term memory (VSTM) were examined using a change detection memory task. A display comprising two rows of four differently colored elements was followed by a probe display in which only one of the rows reappeared. On same trials, the probed row was identical to the corresponding row in the memory display. On different trials, two of the elements in the probed row had their colors exchanged. In each memory display, a task-irrelevant visual element appeared between the two rows, with the potential to function as an occluder. Performance was enhanced when perceptual completion meant that four, rather than eight, objects were perceived in the memory display and when the probe display revealed that the occluded elements continued behind the occluder. It appears that several forms of representation can co-occur to support VSTM, one of which is object based.

Bibliographic note

Walker lead author: Generated the thesis, supervised Davies (PhD student) in design and analysis, wrote manuscript. RAE_import_type : Journal article RAE_uoa_type : Psychology