Physiology of Binocular Vision 2

Question 1

Disparities of Panum’s Fusional Area are…..

Answer 1

horizontal disparities

Question 2

Where do retinal elements come from?

Answer 2

decussation of the optic nerve

Question 3

Pathway to form an image

Answer 3

Retinal Elements - Optic Nerve - Optic Tract - LGN - Visual Cortex - Image

Question 4

Physiological Diplopia

Answer 4

from objects outside Panum’s Fusional Area

shows that the patient can use both eyes

Question 5

Binocular Disparity

Answer 5

causes stereopsis and depth

result of making images one eye at a time

Question 6

Stereopsis

Answer 6

higher form of binocular cooperation
from horizontal retinal disparity; not vertical
automatically acquired

Question 7

Depth Perception

Answer 7

has monocular cues

from experience and learning how to judge distance

Question 8

Stereopsis is gained at age…..

Answer 8

6 months

Question 9

Linear Perspective

Answer 9

same distant object appears smaller than the same object at near

Question 10

Occlusion

Answer 10

object in front covers the object behind

Question 11

Motion Parallax

Answer 11

closer objects appear to move faster

Question 12

Shadow/ Shade

Answer 12

position of shadow shows depressions and elevations

Question 13

Size of Object

Answer 13

larger object is judged as closer

Question 14

Overlaying Contours

Answer 14

object that breaks the contour of another is in front

Question 15

First Degree Fusion

Answer 15

binocular perception of 2 different objects projected in the same direction
shows absence of suppression

Question 16

Second Degree Fusion

Answer 16

binocular perception of identical objects with different parts
adds motor fusion

Question 17

Third Degree Fusion

Answer 17

stereopsis

fusion of targets, giving a 3D image

Question 18

Correspondence and Disparity Theory

Answer 18

binocular vision is based on correspondence and disparity
eyes transmit an image that has no depth
2 objects at a time yields binocular rivalry

Question 19

Persistent disparity causes…..

Answer 19

diplopia

decreased stereopsis