Transsaccadic representation of layout: What is the time course of boundary extension?
Transsaccadic representation of layout: What is the time course of boundary extension?
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DOI：
10.1037/0096-1523.34.3.543
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发表时间：
2008-06-01
影响因子：
2.1
通讯作者：
Intraub, Helene
中科院分区：
文献类型：
--
作者：
Dickinson, Christopher A.;Intraub, Helene
边界扩展的速度有多快？在整个实验中，试验包括3场景序列（325毫秒/图片），掩蔽间隔，并重复1个场景。重复是相同的观点或不同（更近距离或广角）。观察者将重复评定为与原始视图相同、更接近或更广角（5分制）。在实验1中，掩蔽间隔为100、250、625或1，000 ms，在实验2和3中，掩蔽间隔为42、100或250 ms。在所有情况下都发生了边界扩展：相同的视图被评为过于“近距离”，而分心物视图引起了边界扩展典型的评级不对称性（较宽角度的分心物被评为比更近的分心物更类似于原始视图）。最重要的是，边界扩展是显而易见的，当只有一个42毫秒的掩模分离的原始和测试的意见。实验1和3包括条件引起的目光转移之前的评级测试，这并没有消除边界扩展。结果表明，边界扩展是足够快，是足够强大的，以发挥在线的作用，在视图集成，也许支持纳入一个更大的空间框架内的意见。
How rapidly does boundary extension occur? Across experiments, trials included a 3-scene sequence (325 ms/picture), masked interval, and repetition of 1 scene. The repetition was the same view or differed (more close-up or wide angle). Observers rated the repetition as same as, closer than, or more wide angle than the original view on a 5-point scale. Masked intervals were 100, 250, 625, or 1,000 ms in Experiment 1 and 42, 100, or 250 ms in Experiments 2 and 3. Boundary extension occurred in all cases: Identical views were rated as too "close-up," and distractor views elicited the rating asymmetry typical of boundary extension (wider angle distractors were rated as being more similar to the original than were closer up distractors). Most important, boundary extension was evident when only a 42-ms mask separated the original and test views. Experiments 1 and 3 included conditions eliciting a gaze shift prior to the rating test; this did not eliminate boundary extension. Results show that boundary extension is available soon enough and is robust enough to play an on-line role in view integration, perhaps supporting incorporation of views within a larger spatial framework.