transmit the sensory impulse to the appropriate part of the brain or spinal cord for interpretation and processing; also known as association neurons.
depth. 1  the distance from the top downward, from the surface inward, or from front to back. 2  perspective, as in a painting. 3  the quality or condition of being deep; deepness; specif., 4  intensity, as of colors, silence, or emotion.
Very simply, this is depth perception, meaning the ability to see things in three dimensions â length, width, and depth â and to perceive how near or far away people and objects are. One way humans perceive depth is by having eyes that are spaced a little bit apart.