Cue summation enables perceptual grouping.
Cue summation enables perceptual grouping.
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提示求和可实现感知分组
DOI：
10.1037/0096-1523.34.1.1
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通讯作者：
Meinhardt
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作者：
Persike;Meinhardt
为了研究基本特征在形状知觉中的相互作用，被试在一个2-选择强迫选择任务中检测目标图形的存在并识别目标图形的形状。目标图形嵌入在Gabor随机场，并定义了空间频率，方向，或两者的特征对比。使用了两个图形类：在低特征对比度水平下无法识别的块状图形，以及可以在中等程度上识别的菱形图形。结果表明，一个实质性的双线索的好处，这两个数字类的检测。然而，在识别，双线索的好处几乎是不存在的块，而锭剂，线索总和证明是强得多，比检测。图形类别和心理物理任务对基本特征相互作用方式的调节表明，形状知觉涉及两种不同的知觉机制。第一个突出了显著的特征，并在早期的特定特征处理水平上启用局部分组。第二个是更高层次的，服务于形式完成和分组的突出轮廓到全球形状，并使数字感知。（PsycINFO数据库记录（c）2016阿帕，保留所有权利）
In order to study how basic features interact in shape perception, subjects detected target figure presence and identified target figure shape in a combined 2-alternative forced-choice task. Target figures were embedded in Gabor random fields and were defined by feature contrast in spatial frequency, orientation, or both. Two figure classes were used: block figures, which could not be identified at low feature-contrast levels, and lozenge figures, which could be identified to a moderate degree. Results showed a substantial double-cue benefit for both figure classes in detection. In identification, however, a double-cue benefit was practically absent for blocks, whereas, for lozenges, cue summation proved to be much stronger than in detection. The finding that the way basic features interact is modulated by figure class and psychophysical task indicates involvement of 2 distinct perceptual mechanisms in shape perception. The 1st one highlights salient features and enables local grouping on an early feature-specific processing level. The 2nd one is higher level, serves form completion and grouping of salient contours into global shapes, and enables figure perception.(PsycINFO Database Record (c) 2016 APA, all rights reserved)