Early development of dynamic shape perception under slit-viewing conditions
Early development of dynamic shape perception under slit-viewing conditions
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DOI：
10.1068/p7606
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发表时间：
2014-01-01
期刊：
影响因子：
1.7
通讯作者：
Shirai, Nobu
中科院分区：
文献类型：
--
作者：
Imura, Tomoko;Shirai, Nobu
支持婴儿期整体形状和整体运动知觉的发展过程已经得到了相对较好的描述。然而，集成全球运动和全球形状信息的能力的发展仍然不清楚。在这项研究中，我们使用狭缝观察任务来调查3到12个月大小的婴儿整合时空信息的能力。在实验1中，每个婴儿都熟悉一个只能通过狭缝部分看到的移动物体。测试试验中的两个对象中有一个是新对象，另一个对象之前曾在熟悉试验中出现过。研究结果表明，与测试中更熟悉的物体相比，5个月大及以上的婴儿看这些新奇的图画的时间更长。这意味着婴儿在狭缝观看条件下能够识别物体的整个形状。在实验2中，每个婴儿都被呈现了随机顺序的部分图像。在这种情况下，婴儿无法区分物体的整个形状。研究结果表明，婴儿并不依赖实验1中提供的局部线索。
The developmental processes underpinning global shape and global motion perception in infancy have been relatively well described. However, the development of the ability to integrate both global motion and global shape information has remained unclear. In this study we employed a slit-viewing task to investigate the ability to integrate spatiotemporal information among infants ranging in age from 3 to 12 months. In experiment 1 each infant was familiarised with a moving object that was only partly visible through a slit. One of the two objects in the test trial was a novel object, and the other object had appeared previously in familiarisation trials. The findings suggested that infants aged 5 months and over looked longer at the novel drawings compared with the more familiar objects in the test trials. This implies that the infants recognised the whole shape of the object under the slit-viewing condition. In experiment 2 each infant was presented with partial images in a random order. In this case the infants were unable to distinguish the whole shape of the object. The findings suggest that infants did not rely on the local cues provided in experiment 1.