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Neural Encoding of Binocular Disparity: Energy Models, Position Shifts and Phase Shifts (1996)
| Citations: | 108 - 3 self |
BibTeX
@MISC{Fleet96neuralencoding,
author = {David Fleet and Hermann Wagner and David J. Heeger and Prof David Fleet and Alfred P. Sloan},
title = {Neural Encoding of Binocular Disparity: Energy Models, Position Shifts and Phase Shifts},
year = {1996}
}
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Abstract
Neurophysiological data supports two models for the disparity selectivity of binocular simple and complex cells in primary visual cortex. These involve binocular combinations of monocular receptive fields that are shifted in retinal position (the position-shift model) or in phase (the phase-shift model) between the two eyes. This article presents a formal description and analysis of a binocular energy model with these forms of disparity selectivity. We propose how one might measure the relative contributions of phase- and position-shifts in simple and complex cells. The analysis also reveals ambiguities in disparity encoding that are inherent in these model neurons, suggesting a need for a second stage of processing. We propose that linear pooling the binocular responses across orientations and scales (spatial frequency) is capable of producing an unambiguous representation of disparity. 1 Introduction Neurons sensitive to binocular disparity have been found in the visual cortex of ma...
Keyphrases
position shift phase shift binocular disparity energy model neural encoding complex cell disparity selectivity relative contribution binocular response position-shift model model neuron visual cortex binocular combination primary visual cortex disparity encoding introduction neuron binocular simple binocular energy model phase-shift model retinal position second stage monocular receptive field neurophysiological data support unambiguous representation spatial frequency formal description
