Chapter 4 - Illusions

Question 0

What’s a visual illusion?

Answer 0

A conflict between reality and what we perceive

Question 1

What’re the 3 types of illusions?

Answer 1

Fictions
Ambiguous Figure
Distortion

Question 2

What’s fiction illusion?

Answer 2

An illusion caused when a figure is perceived even though it isn’t actually there

Question 3

What an illusionary contour?

Answer 3

A boundary or edge perceived that isn’t present

Question 4

What’s motion after effects?

Answer 4

An illusion caused by paying attention to movement in one direction and perceiving movement in the opposite

Question 5

What’s colour after effects?

Answer 5

An illusion caused by focusing on a coloured stimuli and perceiving the opposite colours afterwards

Question 6

What’s ambiguous figure?

Answer 6

A stimuli with 2 possible figures yet you can only see one at a time

Question 7

2 examples of ambiguous figure

Answer 7

Leepers lady

Neckar cube

Question 8

What’s a distortion illusion?

Answer 8

Where our perception is deceived by some aspect of the stimulus. This can affect the size or shape of an object

Question 9

4 examples of distortion illusions

Answer 9

Ponzo illusion /-\
/ - \
Muller lyer illusion - spazz arrows
Hering illuison - circle ball with spirals
Ebbinghaus illusion - circles around circles

Question 10

Evaluate the gestalt theory of illusions

Answer 10

Provides good explanation of ambiguous figures.
Can’t explain distortions except for muller lyer
Explains fictions well

Question 11

Evaluate Gregory’s theory of illusions

Answer 11

Good explanation of distortions
Can’t explain muller lyer with circles
Explains some ambiguous figures well e.g leepers lady and Neckar cube