Two dimensions of visibility revealed by multidimensional scaling of metacontrast
Two dimensions of visibility revealed by multidimensional scaling of metacontrast
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DOI：
10.1016/j.cognition.2012.09.013
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发表时间：
2013-02-01
期刊：
影响因子：
3.4
通讯作者：
Sackur, Jerome
中科院分区：
文献类型：
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作者：
Sackur, Jerome
越来越多的研究使用主观报告的可见性，以划定域的知觉意识。一般认为可见度可以在一个单一的一维尺度上排序。在这里，我把这个假设测试与元对比，研究最多的视觉掩蔽范式之一。通过多维尺度，我表明，即使元对比刺激只是不同的沿着的时间维度，感知空间，他们产生的三个维度展开：时间和两种视觉，这是混淆时，投射到一个单一的可见性尺度。我认为，元对比创建多维复杂的感知，一个属性，可能会违背其使用作为一个简单的调制器的可见性。更广泛地说，研究结果对使用忽视感知质量的可见性尺度表示怀疑。(C)2012 Elsevier B.V.保留所有权利，
An increasing number of studies use subjective reports of visibility, so as to delineate the domain of perceptual awareness. It is generally assumed that degrees of visibility can be ordered on a single unidimensional scale. Here, I put this assumption to test with metacontrast, one of the most studied visual masking paradigms. By means of multidimensional scaling, I show that even though metacontrast stimuli only differ along the dimension of time, the perceptual space they generate unfolds in three dimensions: time and two kinds of visibilities, that are confounded when projected onto a unitary visibility scale. I argue that metacontrast creates multidimensional complex percepts, a property that may run counter to its use as a simple modulator of visibility. More broadly the results cast doubt on the use of visibility scales that ignore the qualities of the percepts. (C) 2012 Elsevier B.V. All rights reserved,