8C Visual perception

Question 1

Retina

Answer 1

The retina contains photoreceptors, which converts light to sensory information to be sent to the brain

Question 2

Rods and Cones

Answer 2

Rods: photoreceptors that allow someone to see in low levels of light
Cones: photoreceptors that allow someone to see colour and fine details in well-lit conditions

Question 3

Types of colour blindness

Answer 3

There are three main types of colour-blindness:
Red-green colour-blindness (struggle to distinguish red and green)
Blue-yellow colour-blindness (struggle to distinguish between blue and green and yellow and red)
Complete colour-blindness (struggle to differentiate between all colours)

Question 4

Short sightedness

Answer 4

Short-sightedness or myopia is when far-away objects appear blurry

Question 5

Depth cues

Answer 5

Depth cues are visual clues that allow someone to perceive the world in three dimensions and judge the distance and position of objects in their environment.

Question 6

Monocular depth cues

Answer 6

Monocular depth cues: cues that rely on visual information from one eye

Question 7

Binocular depth cues

Answer 7

Binocular depth cues: cues that rely on visual information from both eyes

Question 8

Accomodation

Answer 8

Accommodation is the ability of the eye to change focus from near to distant objects and back again

Question 9

Motion parallax

Answer 9

Motion parallax uses our perception of movement to help us gauge how far away things are.

Question 10

Pictorial depth cues

Answer 10

Pictorial depth cues assist in determining relative distances in two-dimensional pictures.

Question 11

Relative size

Answer 11

If we see two similar but different sized objects, we perceive the larger image to be closer and the smaller image to be far away

Question 12

Height in the visual field

Answer 12

The closer objects are to the horizon line, the further away they appear.

Question 13

Linear perspective

Answer 13

Parallel lines within our visual field appear to gradually converge (come together) as they recede into the distance but are separated up close.

Question 14

Interposition

Answer 14

When objects overlap with one another, we perceive the object that is covered by another as being further away than the one obscuring it.

Question 15

Texture gradient

Answer 15

The closer we are, the greater the detail of texture we can see
The further away the field is, the less details we can see

Question 16

Retinal disparity

Answer 16

Retinal disparity is the difference (or ‘disparity’), between the different images received on the retina of either eye.
The closer an object is, the greater the disparity.

Question 17

Convergance

Answer 17

Convergence involves the inward turning of the eyes, which is detected by the brain as tension changes in the muscles surrounding the eye

Question 18

Visual perception

Answer 18

Visual perception principles are guiding rules that apply to incoming visual signals and determine how they are organised and interpreted

Question 19

Gestalts Proximity Principle

Answer 19

The proximity principle refers to our tendency to group together items based on their physical closeness to one another.

Question 20

Gestalts Similarity principle

Answer 20

The similarity principle reflects our tendency to group together parts of an image that are similar in some way.

Question 21

Gestalts figure ground principle

Answer 21

The figure-ground principle involves our brain’s tendency to see some figures as being at the front of an image

Question 22

Gestalts closure principle

Answer 22

The closure principle refers to our ability to mentally complete images that are otherwise incomplete.

Question 23

Visual constancies

Answer 23

Visual constancies refer to our ability to perceive visual objects as staying the same, even though they may appear to change

Question 24

Shape Constancy

Answer 24

Shape constancy is where we perceive the shape of the door as the same despite it’s change in image

Question 25

Size Constancy

Answer 25

Size constancy is the ability to perceive objects as the same size although the images projected to us differ in size

Question 26

Colour constancy

Answer 26

Colour constancy is the tendency to perceive an object as having the same colour under different levels of brightness

Question 27

Perceptual set

Answer 27

Your perceptual set leads you to view things in a certain way due to your readiness to receive certain stimuli.

can be effected by cultural norms