Object maintenance beyond their visible parts in working memory

Journal of Neurophysiology
Siyi ChenMarkus Conci

Abstract

Completion of a partially occluded object requires that a representation of the whole is constructed based on the information provided by the physically specified parts of the stimulus. Such processes of amodal completion rely on the generation and maintenance of a mental image that renders the completed object in visual working memory (VWM). The present study examined this relationship between VWM storage and processes of object completion. We recorded event-related potentials to track VWM maintenance by means of the contralateral delay activity (CDA) during a change detection task in which composite objects (notched shapes abutting an occluding shape) to be memorized were primed to induce either a globally completed object or a noncompleted, mosaic representation. The results revealed an effect of completion in VWM despite physically identical visual input: change detection was more accurate for completed compared with mosaic representations when observers were required to memorize two objects, and these differences were reduced with four memorized items. At the electrophysiological level, globally completed (vs. mosaic) objects gave rise to a corresponding increase in CDA amplitudes. These results indicate that although inco...Continue Reading

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Citations

Dec 7, 2018·The Quarterly Journal of Experimental Psychology : QJEP·Siyi ChenMarkus Conci
Apr 23, 2019·I-Perception·Jordy ThielenRob van Lier
Oct 20, 2020·Attention, Perception & Psychophysics·Siyi ChenMarkus Conci

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