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ISSN : 1226-9654

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Vol.26 No.4

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The Effect of an Interval between Target Pre-cue and Search Array Onset on the Formation of a Target Template

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2014, v.26 no.4, pp.255-272
https://doi.org/10.22172/cogbio.2014.26.4.003


& (2014). The Effect of an Interval between Target Pre-cue and Search Array Onset on the Formation of a Target Template. The Korean Journal of Cognitive and Biological Psychology, 26(4), 255-272, https://doi.org/10.22172/cogbio.2014.26.4.003

Abstract

This study investigated whether or not the length of the time that was given for forming a search target template could affect subsequent search performance in both simple feature search and conjunction search tasks. To accomplish this, we manipulated the inter-stimulus interval (ISI), the time interval between an offset of a pre-cue and subsequent onset of a search array, to 50ms, 500ms and 1500ms in Experiment 1, and to 100ms, 300ms, 500ms and 700ms in Experiment 2. In Experiment 1, the search RTs were rather constant despite the extended ISIs in both the color and orientation simple feature search conditions. However, the RTs became faster as the ISIs were extended in the color-orientation conjunction search condition. In Experiment 2, benefit of the extended ISIs were found in all search conditions when the orientation feature search task was replaced with a Landolt gap search task. Especially, the results showed that search could be faster if the ISIs are extended to maximum 300ms in the simple feature search, whereas if they are extended to maximum 500ms in conjunction search. These results indicate that the type of a target template formed by pre-cues can affect the minimum time to complete a subsequent search task.

keywords
visual search, target template, conjunction search, simple feature search, 시각탐색, 표적 형판, 결합 탐색, 단순 세부특징 탐색

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