Attentional selection within and across hemispheres: implications for the perceptual load theory
Attentional selection within and across hemispheres: implications for the perceptual load theory
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半球内部和跨半球的注意选择：对知觉负荷理论的影响
DOI：
10.1007/s00221-012-3346-7
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发表时间：
2012-11
影响因子：
2
通讯作者：
Zhou, Xiaolin
中科院分区：
文献类型：
--
作者：
Wei, Ping;Kang, Guanlan;Zhou, Xiaolin
特定任务的知觉负荷影响注意力选择，当负荷高时，选择发生得更早，而当负荷低时，选择发生得更晚。最近的证据表明，局部竞争交互作用可能是知觉负荷效应的基础，并决定了与任务无关的分心事物被处理到什么程度。在这里，我们要求参与者在中央显示中的均匀定向的柱(低负荷条件)或不均匀定向的棒(高负荷条件)中搜索目标棒，而忽略出现在中央显示的左侧或右侧的一致或不一致的侧翼棒，或者出现在中央显示外的六个位置之一的棒。重要的是，我们区分了中央显示器和外围侧翼中的目标出现在同一半视野内或跨不同半视野的情况。结果表明，在低载荷条件下，靶板和侧翼之间存在明显的侧翼效应，而在高载荷条件下，侧翼效应不明显。然而，当目标和侧翼出现在同一半视野内时，无论是在低载荷条件下还是在高载荷条件下，都没有侧翼效应。这些发现表明，忽视与任务无关的分心物的能力受到半球内局部竞争的影响，知觉负荷理论需要对潜在的注意资源消耗的认知过程和机制进行详细的分析。
The perceptual load of a given task affects attentional selection, with the selection occurring earlier when the load is high and later when the load is low. Recent evidence suggests that local competitive interaction may underlie the perceptual load effect and determine to what extent a task-irrelevant distractor is processed. Here, we asked participants to search for a target bar among homogeneously oriented bars (the low load conditions) or heterogeneously oriented bars (the high load conditions) in the central display, while ignoring a congruent or incongruent flanker bar presented to the left or right side of the central display, or a bar presented at one of the six positions outer to the central display. Importantly, we differentiated conditions in which the target in the central display and the peripheral flanker was presented within the same hemifield or across different hemifields. Results showed a significant flanker effect for the low load condition, but not for the high load condition, when the target and the flanker were across hemifields. However, when the target and the flanker were presented within the same hemifield, there was no flanker effect for either low or high load conditions. These findings demonstrate that the ability to ignore the task-irrelevant distractor is affected by local competition within hemisphere and that the perceptual load theory needs to be supplemented with detailed analysis of cognitive processes and mechanisms underlying the consumption of attentional resources.
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影响因子：
3.9
作者：
Evans, Karla K.;Horowitz, Todd S.;Wolfe, Jeremy M.
通讯作者：
Wolfe, Jeremy M.
处理不同感知负载下的多维物体：自下而上感知显着性的优先级
影响因子：
2.9
作者：
通讯作者：
--
DOI：
10.1002/0470018860.s00482
发表时间：
--
期刊：
--
影响因子：
--
作者：
Ronald A. Rensink
通讯作者：
Ronald A. Rensink
DOI：
10.1002/9781119449737.ch2
发表时间：
1958
期刊：
--
影响因子：
--
作者：
D. Broadbent
通讯作者：
D. Broadbent
影响因子：
1.8
作者：
Caputo, G;Guerra, S
通讯作者：
Guerra, S