May 2008
Volume 8, Issue 6
Free
Vision Sciences Society Annual Meeting Abstract  |   May 2008
Cortical dynamics of figure-ground segmentation: Shine-through
Author Affiliations
  • Gregory Francis
    Psychological Sciences, Purdue University
Journal of Vision May 2008, Vol.8, 828. doi:10.1167/8.6.828
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      Gregory Francis; Cortical dynamics of figure-ground segmentation: Shine-through. Journal of Vision 2008;8(6):828. doi: 10.1167/8.6.828.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

When a brief offset vernier target is followed by a bar grating of non-offset vernier elements, the target is sometimes not masked but instead is perceived as being in a foreground plane separate from the mask elements in the background plane (Herzog & Koch, 2001). We analyzed the dynamics of the 3D LAMINART (Cao & Grossberg, 2005) cortical model of depth perception and found that it explains the appearance of shine-through for these stimuli. The model explanation proposes that shine-through is due to a combination of false binocular disparity matches between the target and the central element of the mask, and a weakening of between-disparity-plane competition that occurs from spatial competition and boundary grouping. Simulations of the model demonstrate that it closely matches empirical data on the properties of shine-through, including effects of the number of elements in the mask, the influence of a gap in the mask grating, and long-range effects from elements around the mask grating. The model is contrasted with an alternative explanation of shine-through, and novel mask conditions are identified that allow for empirical tests of the model hypotheses.

Francis, G. (2008). Cortical dynamics of figure-ground segmentation: Shine-through [Abstract]. Journal of Vision, 8(6):828, 828a, http://journalofvision.org/8/6/828/, doi:10.1167/8.6.828. [CrossRef]
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