The perception of cast shadows. The three-dimensional shape of an object can be determined by multiple depth cues, in particular shading and texture. Contrary to popular belief, we found that shading is a pretty weak cue to shape. Moreover, our estimate of the curvature of an object is highly dependent on the contrast of the image. Illumination, shading and the perception of local orientation.
Objects appear flatter on a cloudy day.
In one extreme case, if motion information is linearly combined across the two eyes, then we should be able to null motion perception by presenting two gratings moving in opposite direction in each eye. While this seems to be the case, we also found monocular motion dominance in some other experimental conditions. Cyclopean motion perception at different orientations. Monocular motion overrides early binocular information. A recent theory of developmental dyslexia is linking slow reading speed with a visual pathway in the human brain, the magno-cellular pathway.