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ISSN : 1226-9654

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Vol.24 No.2
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The Effect of Spatio-Temporal Contextual Information in Visual Working Memory on Change Detection Process

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2012, v.24 no.2, pp.167-189
https://doi.org/10.22172/cogbio.2012.24.2.005


& (2012). The Effect of Spatio-Temporal Contextual Information in Visual Working Memory on Change Detection Process. The Korean Journal of Cognitive and Biological Psychology, 24(2), 167-189, https://doi.org/10.22172/cogbio.2012.24.2.005
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Abstract

According to the hypothesis of integrated representations in visual working memory (VWM; Luck & Vogel, 1997), the present study tested if spatio-temporal contextual information in VWM can affect change detection performance. In Experiments, sample items were displayed either at fixed positions that would be easily organized into two distinctive groups or otherwise at random positions that would be difficult for such spatial organization. For the purpose of examining how the selection demand on the spatio-temporal information of the sample items affect change detection accuracy, the test items were displayed in a way that either every sample items (e.g., whole probe) or only a subset of the sample (e.g., partial probe) were displayed. We also examined the accuracy of participants’ responses when determining the membership of a change across two separate groups of test items. We found that change detection was more accurate in the fixed-position condition than the random-position condition except relatively lower accuracy under the partial probe, and the membership determination responses were fairly accurate. The results indicate that the selective access to spatio-temporal information that are accurately represented in VWM in an integrated fashion can lead to indiscriminate retrieval of memory items and consequently can cause a potential interference against VWM performance.

keywords
시각작업기억, 통합적 표상, 맥락정보, 선택적 접근, visual working memory, integrated representation, contextual information, selective access

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