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Simultaneous adaptation to non-collinear retinal motion and smooth pursuit eye movement
2011, Vision ResearchCitation Excerpt :The fitted polynomial was then used to convert potentiometer voltages obtained in the main experiment into perceived directions measured in degrees, thereby removing any potential biases. We note in passing that asking observers to map measurements and percepts between different planes, or indeed perform some more complex mental rotation, are techniques that are not without precedence (e.g. motion-in-depth: Harris and Dean (2003); slant-from-motion: Harris, Freeman, and Hughes (1992)). Indeed, Harris and Dean (2003) found their results did not depend on which of the four techniques they used, some of which required mapping between two planes and others that required mental rotation.
3D surface orientation based on a novel representation of the orientation disparity field
2008, Vision ResearchCitation Excerpt :This solution allows one to derive precise planar surface orientation values from the mere pattern of orientation disparities regardless of additional sources of information absent under orthographic projections but known to be required to disambiguate the orientation disparity signal (e.g., perspective and vertical disparity). The perceived slant of a planar surface, although underestimated, is generally found to increase linearly with the simulated slant (Braunstein, 1968; Harris, Freeman, & Hughes, 1992). It is likely that such a direct relationship is found because the simulated d is generally kept constant over displays with variable simulated inclination, rather than because simulated inclination is a predictor per se of perceived inclination.
Perceiving depth order during pursuit eye movement
2004, Vision ResearchOn the relationship between deformation and perceived surface slant
1996, Vision Research