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The time course of initial scene processing for eye movement guidance in natural scene search

机译:自然场景搜索中用于眼动引导的初始场景处理的时间过程

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A brief glimpse of a scene is sufficient to comprehend its gist. Does information available from a brief glimpse also support further scene exploration? In five experiments, we investigated the role of initial scene processing on eye movement guidance for visual search in scenes. We used the flash-preview moving-window paradigm to separate the duration of the initial scene glimpse from subsequent search. By varying scene preview durations, we found that a 75-ms preview was sufficient to lead to increased search benefits compared to a no-preview control. Search efficiency was further increased by inserting additional scene-target integration time before search initiation: Reducing preview durations to as little as 50 ms led to search benefits only when combined with prolonged integration time. We therefore propose that both initial scene presentation duration and scene-target integration time are crucial for establishing contextual guidance in complex, naturalistic scenes. The present findings show that fast scene processing is not limited to activating gist. Instead, scene representations generated from a brief scene glimpse can also provide sufficient information to guide gaze during object search as long as enough time is available to integrate the initial scene representation.
机译:简要了解一下场景就足以理解其要点。简要了解的信息是否也支持进一步的场景探索?在五个实验中,我们调查了初始场景处理在眼睛运动指导中进行场景视觉搜索的作用。我们使用Flash预览移动窗口范例将初始场景的持续时间与后续搜索分开。通过更改场景预览的持续时间,我们发现与无预览控件相比,75毫秒的预览足以提高搜索效果。通过在搜索开始之前插入额外的场景目标整合时间,进一步提高了搜索效率:将预览持续时间缩短至50毫秒,只有结合较长的整合时间,才能带来搜索优势。因此,我们建议初始场景呈现持续时间和场景目标整合时间对于在复杂,自然主义场景中建立上下文指导至关重要。目前的发现表明,快速场景处理不限于激活要点。取而代之的是,只要有足够的时间可用于整合初始场景表示,从简短的场景瞥见中生成的场景表示还可以提供足够的信息来指导对象搜索期间的凝视。

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