Using visual direction in three-dimensional motion perception.
The eyes receive slightly different views of the world, and the differences between their images (binocular disparity) are used to see depth. Several authors have suggested how the brain could exploit this information for three-dimensional (3D) motion perception, but here we consider a simpler strategy. Visual direction is the angle between the direction of an object and the direction that an observer faces. Here we describe human behavioral experiments in which observers use visual direction, rather than binocular information, to estimate an object's 3D motion even though this causes them to make systematic errors. This suggests that recent models of binocular 3D motion perception may not reflect the strategies that human observers actually use.
Harris
Julie M
JM
School of Psychology, University of St. Andrews, St. Mary's College, South Street, St. Andrews, Fife, Scotland, KY16 9JP, UK. Julie.Harris@st-andrews.ac.uk
Drga
Vit F
VF
D003867:Depth Perception / Q000502:physiology*; D004192:Discrimination, Psychological; D004215:Distance Perception / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D021621:Imaging, Three-Dimensional; D008960:Models, Psychological; D009039:Motion Perception / Q000502:physiology*; D015357:Vision Disparity; D014793:Visual Cortex / Q000502:physiology*