Perception

Question 1

What is the difference between sensation and perception?

Answer 1

Sensation is sensory input from external stimuli whereas perception is how we interpret said information and how we understand it.

Question 2

Monocular depth cues

Answer 2

What information in the retinal image gives us depth and distance but can be inferred by just a single eye. They include: Height in plane, Relative size, occlusion and linear perspective.

Question 3

Binocular Depth Cues

Answer 3

Binocular cues are ones we can interpret with two eyes - They Include: retinal disparity and convergence

Question 4

Why do visual illusions work?

Answer 4

visual illusions work when we: Misinterpret depth cues, When the image is ambiguous or when our eyes are effected by size constancy

Question 5

Some examples of illusions

Answer 5

Muller-Lyer, Rubins vase, the Ames room, the Kaniza triangle and the Necker cube.

Question 6

Gregory’s theory of perception (Top down)

Answer 6

Gregory believed that we perceive using monocular and binocular depth cues. He saw perception as a hypothesis - Incorrect hypotheses will lead to errors in perception. Prior knowledge and past experiences plays a major part in explaining perception. Gregory notes that about 90% of info is lost by the time is reaches the brain.

Question 7

Sensation

Answer 7

Information that we receive from out senses. eg: touch, smell, hearing etc

Question 8

Perception

Answer 8

What we make of the information ,coming from sensory organs, and how we interpret it.

Question 9

Gibsons theory of direct perception

Answer 9

Bottom up theory, sensation and perception are the same thing.

Monocular cues are innate i.e. we’re born with them - they help mammals survive

Motion Parallax - We see and process moving objects as we actually see them. A moving object becomes clearer and moves slower when it is further away from us.