Spatial attention and cuing to global and local levels of hierarchical structure.
Spatial attention and cuing to global and local levels of hierarchical structure.
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DOI：
10.1037//0096-1523.19.3.471
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发表时间：
1993-06
期刊：
影响因子：
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通讯作者：
Lynn C. Robertson;R. Egly;Marvin R. Lamb;L. Kerth
中科院分区：
文献类型：
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作者：
Lynn C. Robertson;R. Egly;Marvin R. Lamb;L. Kerth
五个实验研究了注意在层次结构模式中识别全局和局部目标的作用。在有提示（4个箭头或阴影框）或没有提示后，在可变刺激开始异步（SOA）下呈现分层模式。目标发生在提示水平的概率为80%，未提示水平的概率为20%。在无线索试验中，目标水平概率为0.5。全局线索为全局和本地目标提供了优于SOA的线索试验。局部线索只对局部目标产生好处。对于未提示试验，当穿插局部提示试验时，反应总体上倾向于局部目标，而当穿插全局提示试验时，反应倾向于全局目标。讨论了注意窗口的作用以及在全局和局部层次上注意的离散分布。
Five experiments investigated the role of attention in identifying global and local targets in hierarchically structured patterns. Hierarchical patterns were presented at a variable stimulus onset asynchrony (SOA) either after a cue (4 arrows or shaded boxes) or after no cue. Targets occurred at the cued level 80% of the time and at the uncued level 20%. On uncued trials, target level probability was .5. Global cues produced benefits for both global and local targets over SOA on cued trials. Local cues produced benefits only for local targets. For uncued trials, responses favored local targets overall when interspersed with locally cued trials but favored global targets when interspersed with globally cued trials. The role of an attentional window and discrete distribution of attention over global and local levels of hierarchical patterns are discussed.