Chapter 7 The Visual System

Question 1

Retinal-Geniculate-Calcarine pathway

Answer 1

-Important for perception of the form, color, location, and motion of visual stimuli

Question 2

Midbrain pathway

Answer 2

-Important in voluntary and reflexive control of the eyes

Question 3

Photoreceptors

Answer 3

Rods
-Contain photopigment rhodopsin
-Low light conditions, night vision
Cones
-Contain photopigments for color vision

Question 4

Ganglion Cell

Answer 4

-Synapse in the thalamus and the brain stem
(visual pathway also contains interneurons)

Question 5

What is above and below the Lateral Geniculate nucleus (thalamic nuclei)

Answer 5

-Cuneate above
-Lingual gyrus below

Question 6

Visual Field to Visual Cortex

Answer 6

-Right visual field -> left side of retina -> left hemisphere
-Left visual field -> right side of retina -> right hemisphere

Question 7

Optic Chiasm

Answer 7

-Cross over/decussation of axons

Question 8

3 Components of Primary visual cortex

Answer 8

-Cuneus
-Calcarine sulcus
-Lingual gyrus

Question 9

Dorsal stream

Answer 9

-“Where” pathway involving spatial localization and action

Question 10

Ventral stream

Answer 10

-“What” pathway involving object recognition

Question 11

Where does “Where” pathway project to?

Answer 11

Posterior parietal cortex

Question 12

Where does “What” pathway project to?

Answer 12

Inferior temporal lobe