MECHANISMS OF ATTENTIONAL PRIORITY
MECHANISMS OF ATTENTIONAL PRIORITY
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DOI：
10.1037/0096-1523.16.4.812
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发表时间：
1990-11-01
影响因子：
2.1
通讯作者：
JOHNSON, DN
中科院分区：
文献类型：
--
作者：
YANTIS, S;JOHNSON, DN
当一个单一的突然发作发生在一个多元素的视觉显示，它捕获的注意力，可能是通过产生一个注意力中断，指定为高优先级的发作。通过3个实验，研究了注意优先设置的影响机制。受试者在多个干扰字母中搜索预先指定的目标字母，其中一半有突然发作，一半没有。目标，当存在时，同样经常是一个发病元素和一个非发病元素。几个模型的注意力优先，不同的是有多少开始的元素优先于无开始的元素，进行了评估。该数据支持一个模型，在该模型中，在处理任何非发作刺激之前处理大约4个发作刺激。提出了两种注意力优先级机制：（a）有限数量的高优先级元素的排队和（B）注意力优先级标签的时间调制衰减。
When a single abrupt onset occurs in a multielement visual display, it captures attention, possibly by generating an attentional interrupt that designates onsets as being of high priority. In 3 experiments, the mechanisms subserving attentional priority setting were investigated. Subjects searched for a prespecified target letter among multiple distractor letters, half of which had abrupt onsets and half of which did not. The target, when present, was equally often an onset element and a no-onset element. Several models for attentional priority, differing in how many onset elements have priority over no-onset elements, were assessed. The data support a model in which approximately 4 onset stimuli are processed before any no-onset stimuli are processed. Two attentional priority mechanisms are proposed:(a) queuing of a limited number of high-priority elements and (b) temporally modulated decay of attentional priority tags.