Neural integration of information specifying structure from stereopsis and motion.
When one views a two-dimensional parallel projection of dots on the surface of a rotating globe, the direction of rotation is ambiguous, and the perceived direction of rotation of the two-dimensional figure is unstable over time. Stability can be temporarily induced by adaptation to a three-dimensional globe with a direction of rotation unambiguously specified by stereo disparity; adaptation causes the two-dimensional figure to appear to rotate in the direction opposite that experienced during stereoscopic adaptation. This adaptation effect is selective for axis of rotation but is not shape-specific. It does depend on simultaneous stimulation by multiple depth planes defined by elements moving in different directions. Evidently information about stereopsis and information about structure from motion are integrated within a common neural site in the brain.
Nawrot
M
M
Department of Psychology, Vanderbilt University, Nashville, TN 37240.
Blake
R
R
D000221:Adaptation, Ocular; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D012399:Rotation; D014796:Visual Perception / Q000502:physiology*