Unit 2.2.4 Fallibility of Visual Perception

Question 1

Fallibility

Answer 1

The quality of being prone to error or experiencing difficulties in judgement

Question 2

Visual illusion

Answer 2

• Illusion
• Created by a misinterpretation (distortion or mistake)
• Of the reality of a visual stimulus
• Muller-Lyer + Ames room

Question 3

Muller-Lyer illusion

Answer 3

• The misinterpretation of two lines of equal length
• Each with different-shaped ends

Question 4

Ames room

Answer 4

• A specially constructed, trapezoid-shaped room
• Designed to create the visual illusion that it is rectangular
• For an observer viewing the room through the peephole

Question 5

Ames room - explanation

Answer 5

• Involves manipulation of depth cues
• Demonstrates our inability to maintain size constancy when our depth cues are manipulated/restricted
• Uses monocular depth cues

Question 6

Agnosia

Answer 6

• A brain disorder
• Interferes with one’s ability to recognise or identify objects, people or sounds using one or more of the senses
• Despite the affected sensory system being otherwise fully functioning

Question 7

Visual agnosia

Answer 7

• Commonly associated with brain lesions in the parietal, temporal or occipital lobes
• Different forms/types associated with different areas of damage
• Apperceptive: having problems with processing perceptions
• Associative: no problems with processing perceptions