Motion perception. Moving on the surface.
Recent studies of motion perception show that, in the brain's internal representation of three-dimensional space, distances may be less important than relationships to surfaces.
Braddick
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Department of Psychology, University College London, UK.
D001921:Brain / Q000502:physiology; D006801:Humans; D008960:Models, Psychological; D009039:Motion Perception / Q000502:physiology*; D013997:Time Factors