Neural encoding of binocular disparity: Energy models, position shifts and phase shifts

David J. Fleet, Hermann Wagner, David J. Heeger

Research output: Contribution to journalArticle

Abstract

Neurophysiological data support 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 of the binocular responses across orientations and scales (spatial frequency) is capable of producing an unambiguous representation of disparity.

Original languageEnglish (US)
Pages (from-to)1839-1857
Number of pages19
JournalVision Research
Volume36
Issue number12
DOIs
StatePublished - Jun 1996

Fingerprint

Vision Disparity
Visual Cortex
Neurons

Keywords

  • Binocular disparity
  • Energy models
  • Phase shifts
  • Position shifts
  • Simple and complex cells
  • Stereopsis

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Cite this

Neural encoding of binocular disparity : Energy models, position shifts and phase shifts. / Fleet, David J.; Wagner, Hermann; Heeger, David J.

In: Vision Research, Vol. 36, No. 12, 06.1996, p. 1839-1857.

Research output: Contribution to journalArticle

Fleet, David J. ; Wagner, Hermann ; Heeger, David J. / Neural encoding of binocular disparity : Energy models, position shifts and phase shifts. In: Vision Research. 1996 ; Vol. 36, No. 12. pp. 1839-1857.
@article{96c45c1d0123485291c68370b67b2bdf,
title = "Neural encoding of binocular disparity: Energy models, position shifts and phase shifts",
abstract = "Neurophysiological data support 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 of the binocular responses across orientations and scales (spatial frequency) is capable of producing an unambiguous representation of disparity.",
keywords = "Binocular disparity, Energy models, Phase shifts, Position shifts, Simple and complex cells, Stereopsis",
author = "Fleet, {David J.} and Hermann Wagner and Heeger, {David J.}",
year = "1996",
month = "6",
doi = "10.1016/0042-6989(95)00313-4",
language = "English (US)",
volume = "36",
pages = "1839--1857",
journal = "Vision Research",
issn = "0042-6989",
publisher = "Elsevier Limited",
number = "12",

}

TY - JOUR

T1 - Neural encoding of binocular disparity

T2 - Energy models, position shifts and phase shifts

AU - Fleet, David J.

AU - Wagner, Hermann

AU - Heeger, David J.

PY - 1996/6

Y1 - 1996/6

N2 - Neurophysiological data support 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 of the binocular responses across orientations and scales (spatial frequency) is capable of producing an unambiguous representation of disparity.

AB - Neurophysiological data support 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 of the binocular responses across orientations and scales (spatial frequency) is capable of producing an unambiguous representation of disparity.

KW - Binocular disparity

KW - Energy models

KW - Phase shifts

KW - Position shifts

KW - Simple and complex cells

KW - Stereopsis

UR - http://www.scopus.com/inward/record.url?scp=0029887277&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029887277&partnerID=8YFLogxK

U2 - 10.1016/0042-6989(95)00313-4

DO - 10.1016/0042-6989(95)00313-4

M3 - Article

VL - 36

SP - 1839

EP - 1857

JO - Vision Research

JF - Vision Research

SN - 0042-6989

IS - 12

ER -