Mach bands as empirically derived associations
Mach bands as empirically derived associations
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DOI：
10.1073/pnas.96.9.5245
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发表时间：
1999-04-27
影响因子：
11.1
通讯作者：
Purves, D
中科院分区：
文献类型：
--
作者：
Lotto, RB;Williams, SM;Purves, D
如果马赫带的出现是真实世界亮度分布的经验结果，几种预测随之而来。首先，马赫带的外观应该与自然出现的高光和弱光的外观一致，其次，改变模糊亮度梯度的斜率，使得它更接近于通常由马赫带位置上的亮度最大值和最小值装饰的梯度，应该增强错觉，第三，改变亮度梯度，使得它更接近于通常缺乏马赫带位置上的亮度最大值和最小值的梯度，应该会降低错觉的显著程度。第四，由相同的亮度梯度引起的对马赫频带的感知应该通过上下文线索来改变，这些线索表明该梯度是更有可能表示曲面还是更不可能表示平面。因为这些预测中的每一个都得到了满足，我们得出结论，马赫带的出现是因为刺激(感知)引发的联系结合了这些特征，这是过去经验的结果。
If Mach bands arise as an empirical consequence of real-world luminance profiles, several predictions follow. First, the appearance of Mach bands should accord with the appearance of naturally occurring highlights and lowlights, Second, altering the slope of an ambiguous luminance gradient so that it corresponds more closely to gradients that are typically adorned with luminance maxima and minima in the position of Mach bands should enhance the illusion, Third, altering a luminance gradient so that it corresponds more closely to gradients that normally lack luminance maxima and minima in the position of Mach bands should diminish the salience of the illusion. Fourth, the perception of Mach bands elicited by the same luminance gradient should be changed by contextual cues that indicate whether the gradient is more or less likely to signify a curved or a flat surface. Because each of these predictions is met, we conclude that Mach bands arise because the association elicited by the stimulus (the percept) incorporates these features as a result of past experience.