A configural effect in visual short-term memory for features from different parts of an object
A configural effect in visual short-term memory for features from different parts of an object
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DOI：
10.1080/17470210500256763
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发表时间：
2006-09-01
影响因子：
1.7
通讯作者：
Bruyer, Raymond
中科院分区：
文献类型：
--
作者：
Delvenne, Jean-Francois;Bruyer, Raymond
先前的研究已经表明，当视觉显示器保持特征（例如，颜色和方向），与它们在空间上分开时相比，它们被分组为同一物体的不同部分（Xu，2002 a，2002 b）。这些发现表明，视觉短期记忆（VSTM）编码可以是“基于对象的”。然而，最近已经证明，改变项目的方向可能会影响显示器的空间配置（Jiang，Chun，& Olson，2004），这可能对变化检测具有重要影响。将特征感知分组到对象中明显地减少了显示器中不同空间关系的量，并且因此减少了空间配置的复杂性。在本研究中，我们问是否在以前的研究中观察到的基于对象的编码的好处可能反映了使用的图形编码，而不是一个真正的基于对象的效果的结果。结果表明，当去除图形提示时，基于对象的编码益处对于特征（即，颜色和方向）从物体的不同部分，但显著减少。这些发现支持了这样一种观点，即对物体不同部分特征的记忆可以从基于物体的编码中受益，但使用图形编码显着有助于扩大这种效果。
Previous studies have shown that change detection performance is improved when the visual display holds features (e.g., a colour and an orientation) that are grouped into different parts of the same object compared to when they are all spatially separated (Xu, 2002a, 2002b). These findings indicate that visual short-term memory (VSTM) encoding can be "object based". Recently, however, it has been demonstrated that changing the orientation of an item could affect the spatial configuration of the display (Jiang, Chun, & Olson, 2004), which may have an important influence on change detection. The perceptual grouping of features into an object obviously reduces the amount of distinct spatial relations in a display and hence the complexity of the spatial configuration. In the present study, we ask whether the object-based encoding benefit observed in previous studies may reflect the use of configural coding rather than the outcome of a true object-based effect. The results show that when configural cues are removed, the object-based encoding benefit remains for features (i.e., colour and orientation) from different parts of an object, but is significantly reduced. These findings support the view that memory for features from different parts of an object can benefit from object-based encoding, but the use of configural coding significantly helps enlarge this effect.