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Updated: Aug 5, 2026

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
Published on: December 4, 2013
Dynamics of the influence of segmentation cues on orientation perception
Szonya Durant1, Colin W G Clifford
1Colour, Form and Motion Lab, School of Psychology, University of Sydney, Sydney, NSW 2006, Australia. szonya.durant@rhul.ac.uk
Abstract:
Contextual effects abound in vision. The tilt illusion (TI) is an example-a tilted surrounding annulus causes a vertical central pattern to appear rotated away from the surround. We investigate the dynamics of this effect by presenting components of the stimulus asynchronously. At equal contrast, the largest illusion occurs when centre and surround are presented simultaneously. We vary the spatial gap between centre and surround, the relative contrast and depth and find that these segmentation cues result in a reduced TI upon simultaneous presentation, but not all other times. This reveals the dynamics of orientation and other segmentation cue interactions.
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