Stereoscopic processing in the human brain as a function of binocular luminance rivalry

A. Fortin; J. Faubert; A. Ptito; A. Gjedde; R. Kupers; M. Ptito

doi:10.1097/00001756-200306110-00012

Stereoscopic processing in the human brain as a function of binocular luminance rivalry

A. Fortin, J. Faubert, A. Ptito, A. Gjedde, R. Kupers, M. Ptito

School of Medicine

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We investigated the neural substrates of a recent model of human stereodepth perception by obtaining measurements of regional cerebral blood flow (rCBF) using PET. Subjects experienced the perceptual properties of stereopsis by viewing rival-luminance stereograms displaying an identical random-dot pattern in their central portion while the backgrounds exhibited correspondent dots contrasting in black/white luminance. The stereoscopic vision induced by retinal luminance rivalry coincided with a significant elevation of rCBF in the dorsal visual pathway. Area V5 (MT) was activated bilaterally by the experimental condition while the remaining active loci were restricted to the right hemisphere. The neural sites that responded to this novel stereoscopic stimulus are similar to those activated by traditional stereograms containing horizontal disparities.

Original language	English (US)
Pages (from-to)	1163-1166
Number of pages	4
Journal	Neuroreport
Volume	14
Issue number	8
DOIs	https://doi.org/10.1097/00001756-200306110-00012
State	Published - Jun 11 2003

Keywords

Area MT
Binocular luminance rivalry
Brain imaging
Human
Stereopsis
Visual areas

ASJC Scopus subject areas

General Neuroscience

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10.1097/00001756-200306110-00012

Cite this

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abstract = "We investigated the neural substrates of a recent model of human stereodepth perception by obtaining measurements of regional cerebral blood flow (rCBF) using PET. Subjects experienced the perceptual properties of stereopsis by viewing rival-luminance stereograms displaying an identical random-dot pattern in their central portion while the backgrounds exhibited correspondent dots contrasting in black/white luminance. The stereoscopic vision induced by retinal luminance rivalry coincided with a significant elevation of rCBF in the dorsal visual pathway. Area V5 (MT) was activated bilaterally by the experimental condition while the remaining active loci were restricted to the right hemisphere. The neural sites that responded to this novel stereoscopic stimulus are similar to those activated by traditional stereograms containing horizontal disparities.",

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AU - Fortin, A.

AU - Faubert, J.

AU - Ptito, A.

AU - Gjedde, A.

AU - Kupers, R.

AU - Ptito, M.

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Stereoscopic processing in the human brain as a function of binocular luminance rivalry

Abstract

Keywords

ASJC Scopus subject areas

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