Perceptual comparison of features within and between objects: a new look.
Perceptual comparison of features within and between objects: a new look.
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DOI：
10.1016/j.visres.2009.08.014
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发表时间：
2009-11
期刊：
影响因子：
1.8
通讯作者：
Feldman, J.
中科院分区：
文献类型：
--
作者：
Harrison, S. J.;Feldman, J.
将空间不同的元素集成到相干对象中是一个基本的视觉过程。然而，尽管有关于感知分组的广泛文献，但我们仍然对分组不同视觉位置的代表性后果缺乏明确的了解。我们在功能比较任务中调查了这个问题。受试者确定了属于相同表观对象（对象内部条件）或不同表观对象（对象之间的条件）的匹配功能。刺激在可变的SOA上向后掩盖，以检查片段感知组织随着时间的感知组织变化的后果。对我们的目标至关重要，构成我们刺激的两个对象被遮住了一定程度，因此对象内部和对象性能之间的差异可能与对象的形成明确相关。对于某些刺激布置，我们发现了对象内匹配的卓越性能。但是，性能的模式高度依赖于刺激方向，并且与物体感知的强度无关。使用倾斜刺激布置，我们观察到与对象感知不同的对象之间的比较。我们得出的结论是，功能比较任务中的性能受到独立于对象属性的特征之间的空间关系的强烈影响。确实，这种主导效应可能隐藏了一种基本机制，从而形成视觉对象可以抑制对象内不同特征的比较。
The integration of spatially distinct elements into coherent objects is a fundamental process of vision. Yet notwithstanding an extensive literature on perceptual grouping, we still lack a clear understanding of the representational consequences of grouping disparate visual locations. We investigated this question in a feature comparison task; subjects identified matching features that belonged either to the same apparent object (within-object condition) or to different apparent objects (between-object condition). The stimulus was backward-masked at a variable SOA, to examine the consequences of changes in the perceptual organization of the segments over time. Critical to our aims, the two objects composing our stimulus were occluded to a variable extent, so that differences in within-object and between-object performance could be unequivocally related to the formation of objects. For certain stimulus arrangements, we found superior performance for within-object matches. The pattern of performance was, however, highly dependent on the stimulus orientation and was not related to the strength of the object percept. Using an oblique stimulus arrangement, we observed superior between-object comparisons that did vary with the object percept. We conclude that performance in our feature comparison task is strongly influenced by spatial relations between features that are independent of object properties. Indeed, this dominating effect may hide an underlying mechanism whereby formation of a visual object suppresses comparison of distinct features within the object.
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DOI：
10.3758/bf03198630
发表时间：
1973-01-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
ERIKSEN, CW;HOFFMAN, JE
通讯作者：
HOFFMAN, JE
影响因子：
1.8
作者：
Rensink, RA;Enns, JT
通讯作者：
Enns, JT
影响因子：
--
作者：
Pelli, DG
通讯作者：
Pelli, DG
DOI：
10.1037/0096-1523.29.5.897
发表时间：
2003-10-01
影响因子：
2.1
作者：
Goldsmith, M;Yeari, M
通讯作者：
Yeari, M
DOI：
10.1037/0096-1523.16.1.150
发表时间：
1990-02-01
影响因子：
2.1
作者：
PASHLER, H
通讯作者：
PASHLER, H