Infants' representations of three-dimensional occluded objects.
Infants' representations of three-dimensional occluded objects.
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DOI：
10.1016/j.infbeh.2010.09.002
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发表时间：
2010-12
影响因子：
2.1
通讯作者：
Alexander, Gerianne
中科院分区：
文献类型：
--
作者：
Woods, Rebecca J.;Wilcox, Teresa;Armstrong, Jennifer;Alexander, Gerianne
婴儿表征物体的能力受到了发展研究界的极大关注。随着眼动追踪技术的出现，对婴儿在物体遮挡时的注视模式的详细分析揭示了婴儿表征的本质。目前的研究继续这项研究，通过分析婴儿的观看模式，在一个新的方式，并通过比较婴儿看一个简单的显示，其中一个单一的3-D（3-D）对象移动沿着连续的轨迹，以更复杂的显示，其中两个3-D对象经历的轨迹，中断背后的遮挡。六个月大的婴儿看到一个遮挡序列，其中一个球沿着沿着直线路径移动，消失在一个矩形屏幕后面，然后一个球（球-球事件）或一个盒子（球-盒子事件）出现在另一边。一个眼球跟踪系统记录了婴儿在事件序列中的眼球运动。婴儿对遮挡物的注意力的检查结果表明，在遮挡间隔期间，婴儿更长时间地注视遮挡物的一侧，移动的被遮挡物体位于遮挡物的后面，随着物体在屏幕后面移动，视线从遮挡物的一侧转移到另一侧。此外，当事件包括两个对象，婴儿出席了对象的时空坐标比当涉及一个单一的对象。这些结果提供了明确的证据表明，婴儿的视觉跟踪是不同的，在一个对象显示比两个对象显示。此外，这一发现表明，婴儿可能需要更集中的注意力隐藏的位置的对象在更复杂的多对象显示器，并提供了额外的证据，婴儿代表的空间位置移动被遮挡的对象。
Infants’ ability to represent objects has received significant attention from the developmental research community. With the advent of eye-tracking technology, detailed analysis of infants’ looking patterns during object occlusion have revealed much about the nature of infants’ representations. The current study continues this research by analyzing infants’ looking patterns in a novel manner and by comparing infants’ looking at a simple display in which a single 3-dimensional (3-D) object moves along a continuous trajectory to a more complex display in which two 3-D objects undergo trajectories that are interrupted behind an occluder. Six-month-old infants saw an occlusion sequence in which a ball moved along a linear path, disappeared behind a rectangular screen, and then a ball (ball-ball event) or a box (ball-box event) emerged at the other edge. An eye-tracking system recorded infants’ eye-movements during the event sequence. Results from examination of infants’ attention to the occluder indicate that during the occlusion interval infants looked longer to the side of the occluder behind which the moving occluded object was located, shifting gaze from one side of the occluder to the other as the object(s) moved behind the screen. Furthermore, when events included two objects, infants attended to the spatiotemporal coordinates of the objects longer than when a single object was involved. These results provide clear evidence that infants’ visual tracking is different in response to a one-object display than to a two-object display. Furthermore, this finding suggests that infants may require more focused attention to the hidden position of objects in more complex multiple-object displays and provides additional evidence that infants represent the spatial location of moving occluded objects.
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