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ISSN : 1226-9654

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Vol.25 No.4

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Understanding the Properties of Visual Working Memory Consolidation and Comparison Processes Examined by Simultaneous- and Backward-Masking Manipulation

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2013, v.25 no.4, pp.403-424
https://doi.org/10.22172/cogbio.2013.25.4.002


& (2013). Understanding the Properties of Visual Working Memory Consolidation and Comparison Processes Examined by Simultaneous- and Backward-Masking Manipulation. The Korean Journal of Cognitive and Biological Psychology, 25(4), 403-424, https://doi.org/10.22172/cogbio.2013.25.4.002

Abstract

The present study aimed to examine the properties of VWM consolidation and comparison processes according to the interference driven by simultaneous and backward masks against sample and test items in a color-change detection task. To accomplish this, we displayed the mask stimuli that would superimpose either the sample or test items, simultaneously with or immediately after the sample or test items respectively. When the simultaneous masks were displayed, change detection accuracies in each sample- and test-mask condition rapidly decreased as the display setsize increased. However, when the backward masks were displayed, the change detection was relatively efficient for the test-mask condition compared with the sample-mask condition. When there was no mask, the detection accuracy was much higher than when the masks were present. The strong interference against the sample items observed both in the simultaneous- and backward-mask conditions shows that there is an information-processing bottleneck in the VWM consolidation process. Whereas the evident interference against the test items by the simultaneous-mask rather than by the backward-mask indicates that just as in visual search, the VWM comparison process may undergo a detection process for a salient pop-out elicited by a distinct visual difference across memory and perception.

keywords
visual working memory, simultaneous mask, backward mask, consolidation, comparison, 시각작업기억, 동시차폐, 역행차폐, 공고화, 비교

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