Zucker S W, Cavanagh P
Department of Electrical Engineering, McGill University, Montréal, Québec, Canada.
Spat Vis. 1985;1(2):131-9. doi: 10.1163/156856885x00143.
A texture discrimination task using the Ehrenstein illusion demonstrates that subjective brightness effects can play an essential role in early vision. The subjectively bright regions of the Ehrenstein can be organized either as discs or as stripes, depending on orientation. The accuracy of discrimination between variants of the Ehrenstein and control patterns was a direct function of the presence of the illusory brightness stripes, being high when they were present and low otherwise. It is argued that neither receptive field structure nor spatial-frequency content can adequately account for these results. We suggest that the subjective brightness illusions, rather than being a high-level, cognitive aspect of vision, are in fact the result of an early visual process.
一项使用埃伦斯坦错觉的纹理辨别任务表明，主观亮度效应在早期视觉中可以发挥重要作用。根据方向的不同，埃伦斯坦错觉中主观明亮的区域可以被组织成圆盘或条纹。埃伦斯坦错觉变体与对照图案之间辨别的准确性是虚幻亮度条纹存在与否的直接函数，当条纹存在时准确性高，否则准确性低。有人认为，感受野结构和空间频率内容都不能充分解释这些结果。我们认为，主观亮度错觉并非视觉的高级认知方面，实际上是早期视觉过程的结果。
