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Border ownership-dependent tilt aftereffect for shape defined by binocular disparity and motion parallax739.21 kB
Published VersionCC BY V4.0, Open Access
Journal article
Border ownership-dependent tilt aftereffect for shape defined by binocular disparity and motion parallax
Journal of Neurophysiology, Vol.121(5), pp.1917-1923
2019
PMCID: PMC6589706
PMID: 30917072
Abstract
Discerning objects from their surrounds (i.e., figure-ground segmentation) in a way that guides adaptive behaviors is a fundamental task of the brain. Neurophysiological work has revealed a class of cells in the macaque visual cortex that may be ideally suited to support this neural computation: border ownership cells (Zhou H, Friedman HS, von der Heydt R. J Neurosci 20: 6594–6611, 2000). These orientation-tuned cells appear to respond conditionally to the borders of objects. A behavioral correlate supporting the existence of these cells in humans was demonstrated with two-dimensional luminance-defined objects (von der Heydt R, Macuda T, Qiu FT. J Opt Soc Am A Opt Image Sci Vis 22: 2222–2229, 2005). However, objects in our natural visual environments are often signaled by complex cues, such as motion and binocular disparity. Thus for border ownership systems to effectively support figure-ground segmentation and object depth ordering, they must have access to information from multiple depth cues with strict depth order selectivity. Here we measured in humans (of both sexes) border ownership-dependent tilt aftereffects after adaptation to figures defined by either motion parallax or binocular disparity. We find that both depth cues produce a tilt aftereffect that is selective for figure-ground depth order. Furthermore, we find that the effects of adaptation are transferable between cues, suggesting that these systems may combine depth cues to reduce uncertainty (Bülthoff HH, Mallot HA. J Opt Soc Am A 5: 1749–1758, 1988). These results suggest that border ownership mechanisms have strict depth order selectivity and access to multiple depth cues that are jointly encoded, providing compelling psychophysical support for their role in figure-ground segmentation in natural visual environments.
Details
- Title
- Border ownership-dependent tilt aftereffect for shape defined by binocular disparity and motion parallax
- Authors
- Reuben Rideaux (Corresponding Author) - University of CambridgeWilliam J. Harrison (Author) - The University of Queensland
- Publication details
- Journal of Neurophysiology, Vol.121(5), pp.1917-1923
- Publisher
- American Physiological Society
- Date published
- 2019
- DOI
- 10.1152/jn.00111.2019
- ISSN
- 1522-1598; 0022-3077
- PMID
- 30917072; PMC6589706
- Copyright note
- © the American Physiological Society. Licensed under Creative Commons Attribution CC-BY 4.0.
- Grant note
- This work was supported by the Leverhulme Trust (ECF-2017-573 to R. Rideaux), the Isaac Newton Trust [17.08(o) to R. Rideaux], and the Wellcome Trust (095183/Z/10/Z to R. Rideaux as a postdoctoral fellow of Andrew E. Welchman).
- Organisation Unit
- School of Health - Psychology
- Language
- English
- Record Identifier
- 99996797602621
- Output Type
- Journal article
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- Domestic collaboration
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- Web Of Science research areas
- Neurosciences
- Physiology