Adaptation and perceptual norms in color vision.
Adaptation and perceptual norms in color vision.
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DOI：
10.1364/josaa.25.002817
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发表时间：
2008-11
期刊：
影响因子：
--
通讯作者：
Leonard D
中科院分区：
文献类型：
--
作者：
Webster MA;Leonard D
许多感知维度被认为是相对于平均值或标准来表示的。基于规范的编码模型假设规范在心理上看起来是中性的，因为它反映了底层神经代码中的中性反应。我们通过询问当神经反应因适应而改变时如何影响“白色”的判断，从而在人类色觉中测试了这一假设。改变适应颜色以确定不影响观察者主观白点的刺激水平。这个水平代表了敏感性受适应调节阶段的反应规范，我们表明这些反应规范对应于感知中性刺激，并且它们可以解释不同观察者之间以及视野中不同位置的同一观察者内部对白色的感知如何变化。我们还表明，当观察者暴露于常见的白色适应刺激时，感知白色的个体差异会减少，这表明感知差异部分归因于神经反应标准化方式的差异。这些结果表明外观规范和色觉编码之间存在密切联系，并说明了在其他感知领域探索这种联系的一般范例。
Many perceptual dimensions are thought to be represented relative to an average value or norm. Models of norm-based coding assume that the norm appears psychologically neutral because it reflects a neutral response in the underlying neural code. We tested this assumption in human color vision by asking how judgments of “white” are affected as neural responses are altered by adaptation. The adapting color was varied to determine the stimulus level that did not bias the observer’s subjective white point. This level represents a response norm at the stages at which sensitivity is regulated by the adaptation, and we show that these response norms correspond to the perceptually neutral stimulus and that they can account for how the perception of white varies both across different observers and within the same observer at different locations in the visual field. We also show that individual differences in perceived white are reduced when observers are exposed to a common white adapting stimulus, suggesting that the perceptual differences are due in part to differences in how neural responses are normalized. These results suggest a close link between the norms for appearance and coding in color vision and illustrate a general paradigm for exploring this link in other perceptual domains.
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影响因子：
25
作者：
Leopold, DA;O'Toole, AJ;Blanz, V
通讯作者：
Blanz, V
影响因子：
1.8
作者：
CHAPARRO, A;STROMEYER, CF;KRONAUER, RE
通讯作者：
KRONAUER, RE
DOI：
10.1364/josaa.4.001428
发表时间：
1987-08-01
影响因子：
1.9
作者：
CAVANAGH, P;MACLEOD, DIA;ANSTIS, SM
通讯作者：
ANSTIS, SM
影响因子：
5.4
作者：
HURVICH, LM;JAMESON, D
通讯作者：
JAMESON, D
影响因子：
--
作者：
Gibson, JJ;Radner, M
通讯作者：
Radner, M