Chapter 10 Part 2

Question 1

Stereoblindness

Answer 1

The inability to make use of binocular disparity as a depth cue
(childhood vision disorder like strabismus which is eye misalignment)

Question 2

Infant Depth Perception

Answer 2

-Binocular disparity is early
-Pictorial depth cues come later
Depth from (familiar size and cast shadows)

Question 3

Infant Vision

Answer 3

-Newborn: very fuzzy vision, minimal color
-6 months and up: start to see color, detail, and face recognition

Question 4

Critical Period

Answer 4

When the organism is susceptible to developmental change (environmental input)

Question 5

Strabismus

Answer 5

A misalignment in the eyes where a single object is shown on the fovea of one eye and in the non foveal area of the turned eye

Question 6

Suppression

Answer 6

The inhibition of an unwanted image (not seeing your nose typically)

Question 7

Esotropia

Answer 7

One eye goes inward (born w it)

Question 8

Exotropia

Answer 8

One eye goes outward (born w it)

Question 9

Hypertropia

Answer 9

One eye goes up

Question 10

Hypotropia

Answer 10

One eye goes down

Question 11

Strabismus Complications

Answer 11

-Lazy eye
-Double vision
-Reading trouble
-Social/Emotional impact
-Bad depth perception
-Head ache/eye strain

Question 12

Depth in Predators

Answer 12

Forward facing eyes with overlap fields of view, and are necessary for binocular disparity

Question 13

Depth in Prey

Answer 13

Side facing eyes, no overlap, wider view, and important for watching predators

Question 14

Why aren’t there more species with one eye?

Answer 14

-Can’t see whats behind them
-Can’t judge depth
-Can’t hunt
-Can’t see whats hunting them

Question 15

Why aren’t there animals with eyes in the back of their heads?

Answer 15

Depth isn’t good

Question 16

Distance and Size Experiment

Answer 16

Part 1-Judgements were based on physical size (cues)
Part 2-No cues were given and judgements were based off of retinal images

Question 17

Size Constancy

Answer 17

Objects perception size stays same regardless of observer distance

Question 17

Size-Distance Scaling Equation

Answer 17

Change in distance balances retinal size

Question 18

Visual Angle

Answer 18

Object angle relative to observer
-Stimulus depends on the size and distance from observer
-Gets closer, bigger

Question 19

Emmert’s law

Answer 19

-Retinal size of afterimage is same
-Perceived size will change w projection distance
-distant scaling equ.

Question 20

Muller-Lyer Illusion Explanation (Corners)

Answer 20

-Misapplied size-constancy scaling
-SCS works for 3D not 2D
-Observers have to see fins as outside and inside corners
-Outside corners close, inside further
-

Question 21

M-L Illusion Explanation Part 2 (Circles and lines)

Answer 21

Since the retinal images are the same, the lines must be a different size

Question 22

Ponzo Illusion

Answer 22

2 guys on train tracks