Whatare the monocular cues of depth perception Explain the role ofbinocular cues in the perception of depth - Psychology - Sensory Attentional and Perceptual Processes

Question

Whatare the monocular cues of depth perception? Explain
the role ofbinocular cues in the perception of depth?

Global Expert · Accepted Answer

Themonocular cues of depth perception induce depth in objects
whenviewed through a single eye They are also known as pictorial
cues asthey are used by artists to induce depth in two
dimensionalpaintings Important monocular cues are relative size and
height,interposition, linear and aerial perspective, light and
shade,texture gradient and motion parallax
Thebinocular cues of depth perception are provided by both the
eyes inthree dimensional spaces Their role in the perception of
depth areas follows:

(i) Retinal or Binocular disparity: It occurs when the
two eyes have different locations in the head and are separated
horizontally with a difference of 6 5 centimetres The difference in
the images formed by the eyes is due to retinal disparity Large
retinal disparity means a close object and small retinal disparity
means a distant object
(ii) Convergence: When the eyes converge inward to bring
the image on the fovea of each eye, a group of muscles send
messages to the brain which are interpreted as cues to the
perception of depth The degree of convergence decreases with
increase in distance of the object
(iii) Accommodation: It is the process through which
image is focussed on the retina with the help of ciliary muscle
These muscles change the thickness of the eye lens The degree of
contraction of the muscles provides a cue to distance The muscles
relax when the object is distant and contract when the object is
near

Whatare the monocular cues of depth perception? Explain the role ofbinocular cues in the perception of depth?