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ISSN : 1226-9654

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Vol.21 No.4
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Properties of Visual Working Memory Representations as Examined by Memory-Perception Comparison Process

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2009, v.21 no.4, pp.265-282
https://doi.org/10.22172/cogbio.2009.21.4.002

(2009). Properties of Visual Working Memory Representations as Examined by Memory-Perception Comparison Process. The Korean Journal of Cognitive and Biological Psychology, 21(4), 265-282, https://doi.org/10.22172/cogbio.2009.21.4.002
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Abstract

To examine properties of visual working memory (VWM) representations, event-related potentials were measured during the comparison process between memory and perception in a change-detection task. Subjects were asked to detect an orientation change upon a memory display onset after remembering a few orientation bars, and the memory set size was varied from 1 to 6. Onset latencies of attention shift triggered by a memory-perception difference were measured by N2pc component onset time, and the latencies were constant regardless of the number of items in the display. The results indicate that the comparison between VWM representations and perceptual inputs occurs very rapidly and is accomplished immediately upon a test display onset, and further that the representations in VWM are stored into 3-4 fixed-resolution slots.

keywords
시각작업기억, 변화 탐지, 비교, N2pc, 고정해상도 슬롯, visual working memory, change-detection, comparison, N2pc, fixed-resolution slot, visual working memory, change-detection, comparison, N2pc, fixed-resolution slot

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