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Priming effect of individual similarity and ensemble perception in visual search and working memory

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Abstract

Perceptual priming is a well-known phenomenon showing that the repetition of an object’s feature can facilitate subsequent detection of that item. Although the priming effect has been rigorously studied in visual search, less is known about its effect on working memory and it is unclear whether the repetition of similar features, and furthermore, ensemble perception created by a large set of similar features, can induce priming. In this study, we investigated the priming effects of individual similarity and ensemble perception in visual search and visual working memory (VWM). We replicated the classic perceptual priming effect (Experiment 1a) and found that visual search was enhanced when the current target had a similar color to the previous target (Experiment 1b), but not when the similar color had been shown as a distractor before (Experiment 1c). However, if the target and distractors of similar colors formed ensemble perception, the search efficiency was again promoted even when the current target shared the same color with the previous distractor (Experiment 1d). For VWM, repeating the ensembles of the target- and nontarget-color subsets did not significantly affect the memory capacity, while switching the two harmed the memory fidelity but not capacity (Experiment 2). We suggest different underlying mechanisms for priming in visual search and VWM: in the former, the perception history of individual similarity and stimuli ensemble exert their effects on through the priority map, by forming a gradient distribution of attentional weights that peak at the previous target feature and diminish as stimulus diverges from the previously selected one; while in the latter, perception history of memory ensemble may influence the deployment of existing memory resources across trials, thereby affecting the memory fidelity but not its capacity.

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The data and materials associated with this study are available from the corresponding author upon request.

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Funding

This research was supported by the National Natural Science Foundation of China (32271100), and the Basic and Applied Basic Research Foundation of Guangdong Province (2021A1515010840).

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Contributions

WL: conceptualization; data curation; formal analysis; software; writing—original draft. JQ: funding acquisition; methodology; project administration; supervision; writing—review and editing.

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Correspondence to Jiehui Qian.

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The authors declare no competing interests.

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The authors have no competing financial interests that might be perceived to influence the results and/or discussion reported in this paper.

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This research has been approved by the Sun Yat-sen University Internal Review Board, Ethical committees of Department of Psychology, following the guideline of the Declaration of Helsinki.

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Lin, W., Qian, J. Priming effect of individual similarity and ensemble perception in visual search and working memory. Psychological Research 88, 719–734 (2024). https://doi.org/10.1007/s00426-023-01902-z

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  • DOI: https://doi.org/10.1007/s00426-023-01902-z

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