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ISSN : 1226-9654

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Vol.25 No.3

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The effect of signal strength on the attentional blink

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.3, pp.273-291
https://doi.org/10.22172/cogbio.2013.25.3.002

(Department of Psychology, University of Texas, Austin)

& (2013). The effect of signal strength on the attentional blink. The Korean Journal of Cognitive and Biological Psychology, 25(3), 273-291, https://doi.org/10.22172/cogbio.2013.25.3.002

Abstract

The attentional blink (AB) is a high-level phenomenon that is known to occur due to capacity limitations in memory or limited resources in attention. Recent studies, however, have shown that low-level visual features such as the bottom-up saliency of a stimulus can also influence the AB. In this study, we investigated the validity of an attentional cascade model which is based on the assumption that both working memory and bottom-up saliency will influence the AB. More specifically, we manipulated the signal strength, one of low-level features, of the second target (T2) and investigated its effect on the AB. In Experiment 1, we were able to observe that a simple orientation detection task produced the AB, suggesting that the AB can occur even for simple orientation stimuli. In Experiment 2, it was observed that the amount of the AB was modulated by the signal strength of T2 both in the orientation detection task (Experiment 2-1) and in the digit detection task (Experiment 2-2). Through these results, it was shown that the AB can be regulated by the signal strength of T2. Furthermore, the result for which the effect of the AB varies depending on the signal strength of T2 supports the validity of the attentional cascade model.

keywords
주의 깜박임, 주의 단계 모델, 신호 강도, the attentional blink, an attentional cascade model, signal strength

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