June 2006
Volume 6, Issue 6
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Vision Sciences Society Annual Meeting Abstract  |   June 2006
Aftereffect of motion-in-depth based on binocular cues: No effect of relative disparity between adaptation and test surfaces
Author Affiliations
  • Yuichi Sakano
    Centre for Vision Research, York University, Canada
  • Robert S. Allison
    Centre for Vision Research, York University, Canada
  • Ian P. Howard
    Centre for Vision Research, York University, Canada
  • Sabnam Sadr
    Centre for Vision Research, York University, Canada
Journal of Vision June 2006, Vol.6, 626. doi:10.1167/6.6.626
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      Yuichi Sakano, Robert S. Allison, Ian P. Howard, Sabnam Sadr; Aftereffect of motion-in-depth based on binocular cues: No effect of relative disparity between adaptation and test surfaces. Journal of Vision 2006;6(6):626. doi: 10.1167/6.6.626.

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

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Abstract

Previously, we found that a motion aftereffect (MAE) in depth can occur after adaptation to motion-in-depth in random-element stereograms (VSS 2005). In the present study, we investigated the depth selectivity of the MAE in depth. The adaptation stimulus consisted of two frontoparallel surfaces, one above and one below the fixation point. These surfaces were depicted by random-dot stereograms that were temporally correlated (RDS) or uncorrelated (DRDS). During the 2-min adaptation phase, the disparity of one surface increased and that of the other surface decreased linearly and repeatedly to simulate smooth motion-in-depth. The range of these disparity ramps was −26.2 to −8.72, −8.72 to +8.72, or +8.72 to +26.2 arcmin, where positive and negative values indicate crossed and uncrossed disparity. The test stimulus consisted of two stationary frontoparallel surfaces depicted by a RDS with a fixed pedestal disparity of either −17.4, 0, or +17.4 arcmin. Under RDS adaptation conditions, robust MAE in depth occurred. The duration of this MAE in depth did not depend on the relation between the disparity range of the adaptation stimulus and the pedestal disparity of the test stimulus. Under DRDS adaptation conditions, MAE in depth did not occur. These results suggest that the adaptable processes used to detect motion-in-depth from binocular cues are insensitive to pedestal disparity.

Sakano, Y. Allison, R. S. Howard, I. P. Sadr, S. (2006). Aftereffect of motion-in-depth based on binocular cues: No effect of relative disparity between adaptation and test surfaces [Abstract]. Journal of Vision, 6(6):626, 626a, http://journalofvision.org/6/6/626/, doi:10.1167/6.6.626. [CrossRef]
Footnotes
 The support of Province of Ontarion (Premier's Research Excellence Award) and NSERC (Canada) are greatly appreciated.
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