Retinal speed gradients and the perception of surface slant.
Previous work has demonstrated a difference in human sensitivity to compressive and shearing speed gradients. This raises the possibility that the ability to estimate the slant of a surface may vary with its direction of tilt. No such variance was found here, which may indicate that slant estimation depends upon deformation rather than upon compression or shear.
Harris
M
M
Cognitive Science Research Centre, School of Psychology, University of Birmingham, England.
Freeman
T
T
Hughes
J
J
D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D012160:Retina / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*