Mechanisms of priming of pop-out: Stored representations or feature-gain modulations?

被引:34
作者
Lee, Hyunkyu
Mozer, Michael C. [2 ]
Vecera, Shaun P. [1 ]
机构
[1] Univ Iowa, Dept Psychol, Iowa City, IA 52242 USA
[2] Univ Colorado, Boulder, CO 80309 USA
基金
美国国家科学基金会;
关键词
SINGLETON FEATURE TARGETS; VISUAL WORKING-MEMORY; GUIDED SEARCH; ATTENTION; IMPLICIT; DIMENSIONS; CONTINGENT; RETRIEVAL; GUIDANCE; DEPENDS;
D O I
10.3758/APP.71.5.1059
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Previous research has shown that repetition of a task-relevant attention-capturing feature facilitates pop-out search. This priming of pop-out effect is due to some residual memory from recent trials. We explore two possible mechanisms of priming of pop-out: a top-down attentional benefit from a memory of the previous target representation that is stored in visual short-term memory (VSTM) and a bottom-up change of attentional gains from perceptual features of the previously attended target. We manipulated participants' ability to form a memory trace in VSTM by occupying it with a distractor task and found that occupying VSTM did not interfere with priming of pop-out. We next manipulated attentional gains associated with feature values by inserting an irrelevant task between pop-out searches. We found that the color of the target from the intervening perceptual task influenced pop-out search: The current pop-out search was facilitated when the intervening task's target matched the target color of the pop-out search. These results suggest that priming of pop-out might not be due to a memory trace of the previous targets in VSTM but rather, might be due to changes in attentional control based on priming from relatively low-level feature representations of previously attended objects.
引用
收藏
页码:1059 / 1071
页数:13
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