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Spatial and temporal tuning of motion-in-depth

Record type: Article

We used the Pulfrich effect to investigate perception of motion in depth. Independent manipulation of spatial and temporal frequency content in stereoscopic motion stimuli revealed the tuning characteristics of motion-in-depth perception. Sensitivity to interocular phase difference between sinusoidally oscillating sine-wave gratings was measured in four observers who judged direction of motion in depth. Discrimination thresholds in terms of interocular phase difference were determined to investigate spatial and temporal tuning characteristics of a system that is based on interocular phase difference, interocular delay, binocular disparity and velocity difference. Temporal frequency tuning of interocular phase difference thresholds was band pass and relatively dependent on spatial frequency variation. These results together with evidence from two control experiments support the idea that sensitivity to direction of motion in depth is limited by a stereo-motion system that monitors binocular horizontal disparity and motion rather than interocular phase difference, interocular delay, or interocular velocity difference

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Lages, Martin, Mamassian, Pascal and Graf, Erich W. (2003) Spatial and temporal tuning of motion-in-depth Vision Research, 43, (27), pp. 2861-2873. (doi:10.1016/j.visres.2003.08.006).

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Published date: December 2003
Keywords: pulfrich effect, binocular disparity, interocular delay, interocular phase difference, velocity difference


Local EPrints ID: 47630
ISSN: 0042-6989
PURE UUID: 2e3520bb-53fb-4f9f-bbb1-f6e5ad8efc61
ORCID for Erich W. Graf: ORCID iD

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Date deposited: 07 Aug 2007
Last modified: 17 Jul 2017 15:03

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Author: Martin Lages
Author: Pascal Mamassian
Author: Erich W. Graf ORCID iD

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