Gradient Representations and the Perception of Luminosity

Details Gradient Representations and the Perception of Luminosity Gradient Representations and the Perception of Luminosity

2007-09-20

arxiv.org/abs/0709.3237v1

Biology

Quantitative Biology

Neurons and Cognition

This is the longer version of an article which is under review for publication in Vision Research

Scientific paper

The neuronal mechanisms that serve to distinguish between light-emitting and light reflecting objects are largely unknown. It has been suggested that luminosity perception implements a separate pathway in the visual system, such that luminosity constitutes an independent perceptual feature. Recently, a psychophysical study was conducted to address the question whether luminosity has a feature status or not. However, the results of this study lend support to the hypothesis that luminance gradients are instead a perceptual feature. Here, I show how the perception of luminosity can emerge from a previously proposed neuronal architecture for generating representations of luminance gradients.

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