Combining top-down processes to guide eye movements during real-world scene search
Combining top-down processes to guide eye movements during real-world scene search
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DOI：
10.1167/10.2.4
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发表时间：
2010-01-01
影响因子：
1.8
通讯作者：
Henderson, John M.
中科院分区：
文献类型：
--
作者：
Malcolm, George L.;Henderson, John M.
在现实世界的场景中，眼球运动可以被各种类型的信息所引导。在这里，我们研究了视觉系统如何结合多种自上而下的信息来促进搜索。我们独立地操作搜索目标模板的特异性和上下文约束在对象搜索任务中的有用性。使用眼动仪将搜索时间划分为三个行为定义的时期，以便识别对特定搜索过程的影响。该结果支持了先前的研究，表明特定目标模板或场景上下文的可用性有助于搜索。结果还表明，目标模板和上下文约束叠加在一起有利于搜索。研究结果通过提出我们的视觉系统利用多种自上而下信息的方式，扩展了最近的眼睛引导模型。
Eye movements can be guided by various types of information in real-world scenes. Here we investigated how the visual system combines multiple types of top-down information to facilitate search. We manipulated independently the specificity of the search target template and the usefulness of contextual constraint in an object search task. An eye tracker was used to segment search time into three behaviorally defined epochs so that influences on specific search processes could be identified. The results support previous studies indicating that the availability of either a specific target template or scene context facilitates search. The results also show that target template and contextual constraints combine additively in facilitating search. The results extend recent eye guidance models by suggesting the manner in which our visual system utilizes multiple types of top-down information.