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Subjective figures and texture perception

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image of Spatial Vision
For more content, see Multisensory Research and Seeing and Perceiving.

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.

Affiliations: 1: Computer Vision and Robotics Laboratory, Department of Electrical Engineering, McGill University, Montréal, Québec H3A 2A7, Canada

10.1163/156856885X00143
/content/journals/10.1163/156856885x00143
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/content/journals/10.1163/156856885x00143
1985-01-01
2016-12-10

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