Implicit location probability learning does not induce baseline shifts of visuospatial attention
Implicit location probability learning does not induce baseline shifts of visuospatial attention
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DOI：
10.3758/s13423-019-01588-8
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发表时间：
2019-04-01
影响因子：
3.5
通讯作者：
Jiang, Yuhong V.
中科院分区：
文献类型：
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作者：
Addleman, Douglas A.;Schmidt, Abigale L.;Jiang, Yuhong V.
我们测试了内隐学习是否会导致空间注意力的转移，提前或响应于刺激的发生。参与者完成了随机穿插的字母搜索试验，其中包括报告L中T的方向，以及场景搜索，其中包括识别四个场景中的哪一个来自目标类别（例如，森林）。在实验1中，一个初始阶段更经常包含在一个屏幕象限的目标字母，而目标场景出现同样频繁地在所有象限。参与者持续优先考虑字母目标在更可能的区域，但内隐学习的偏好并没有影响公正的场景任务。在实验2中，场景和字母任务的空间概率颠倒。不知道概率操纵的参与者只获得了更可能的区域中的场景目标的空间偏差，对字母搜索没有影响。而不是招募基线转移的空间注意力刺激发作之前，目标概率的内隐学习产生任务依赖性转移的空间注意力刺激发作后。这种转移可能涉及特定任务背景下特有的注意力行为。
We tested whether implicit learning causes shifts of spatial attention in advance of or in response to stimulus onset. Participants completed randomly interspersed trials of letter search, which involved reporting the orientation of a T among Ls, and scene search, which involved identifying which of four scenes was from a target category (e.g., forest). In Experiment 1, an initial phase more often contained target letters in one screen quadrant, while the target scenes appeared equally often in all quadrants. Participants persistently prioritized letter targets in the more probable region, but the implicitly learned preference did not affect the unbiased scene task. In Experiment 2, the spatial probabilities of the scene and letter tasks reversed. Participants unaware of the probability manipulation acquired only a spatial bias to scene targets in the more probable region, with no effect on letter search. Instead of recruiting baseline shifts of spatial attention prior to stimulus onset, implicit learning of target probability yields task-dependent shifts of spatial attention following stimulus onset. Such shifts may involve attentional behaviors unique to certain task contexts.