Animals also use motion parallax, in which the animals (or just the head) move to gain different viewpoints.

If information about the direction and velocity of movement is known, motion parallax can provide absolute depth information.

Other neurons are thought to be involved in analyzing the content of the visual scene itself, such as separating figures from ground using motion parallax.

Movement: Similar to the visual system there is also the phenomenon of motion parallax in acoustical perception.

The kinetic depth effect can manifest independently, however, even when motion parallax is not present.

The net result of these four layers was to produce a simulated perspective of great depth, via motion parallax.

Stereopsis and horizontal motion parallax, two relatively powerful cues to depth, are preserved.

Other neurons are thought to be involved in analyzing the content of the visual scene itself, for example, to separate figure from ground using motion parallax.

Many small animals bob their heads to create motion parallax (wiggling) so they can better estimate distance prior to jumping.

However, perception of depth from monocular cues such as size, perspective, and motion parallax remains normal.