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Monocular compared to binocular depth perception in human infants.

Human infants were made temporarily monocular with an eye patch. They performed like bginocular infants on the visual cliff at visual depths of 25 centimeters or more. At a visual depth of 12.7 centimeters infants younger than 9 months of age revealed a monocular weakness by turning toward the uncovered eye.

Age Factors

Depth perception in the rat (Rattus Norvegicus): prepotency of three-dimensional over two-dimensional surfaces.

The descent behavior to two- and three-dimensional surfaces in a depth situation was measured and compared for 45-50 days-old hooded rats. When depth differences between surfaces were controlled, significantly more descents were made to three-dimensional than to the two-dimensional surface. The results suggest that a three-dimensional surface--more representative of an animal's natural terrain--provides a more informative environment for motion parallax than does a two-dimensional one.

Animals

Depth perception and subjective contours.

A distinction can be made between subjective lines and edges, and subjective lines of the Kennedy-type which suppress (are epistatic to) illusory depth defined by differences of shade.

Cues