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Change detection in visual short-term memory: the relative impact of pairwise switches and identity substitutions

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posted on 2023-08-30, 14:09 authored by Raju P. Sapkota, Shahina Pardhan, Ian van der Linde
Numerous kinds of visual events challenge our ability to keep track of objects that populate our visual environment from moment to moment. These include blinks, occlusion, shifting visual attention and changes to object’s visual and spatial properties over time. These visual events may lead to objects falling out of our visual awareness but can also lead to unnoticed changes, such as undetected object replacements and positional exchanges. Current visual memory models do not predict which visual changes are likely to be the most difficult to detect. We examined the accuracy with which switches (where two objects exchange locations) and substitutions (where one or two objects are replaced) are detected. Inferior performance for one-object substitutions vs. two-objects switches, along with superior performance for two-object substitutions vs. two-object switches was found. Our results are interpreted in terms of object file theory, trade-offs between diffused and localized attention, and net visual change.

History

Refereed

  • Yes

Volume

62

Page range

232-239

Publication title

Experimental Psychology

ISSN

2190-5142

Publisher

Hogrefe

File version

  • Accepted version

Language

  • eng

Legacy posted date

2015-09-18

Legacy creation date

2017-10-17

Legacy Faculty/School/Department

ARCHIVED Faculty of Medical Science (until September 2018)

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