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Central Visual Pathways
S. J. Potashner, Ph.D
[email protected]
Projections of Retinal Ganglion Cells
The Thalamus
Retinal Ganglion Cells
80%
Hypothalamus
& Pretectum
Superior
Colliculus
LGN
The Inverted Retinal Image
The Visual Field
The Retinal Image
Each Visual Hemifield
Is Projected To The
Opposite Hemisphere
L
R
A
B
A
C
B
C
Projections Of
Lateral Geniculate
Neurons
E
L
D
D
E
R
Cells Representing Movement and Form
Lateral
Geniculate
Nucleus
Retina
80%
10%
Primary
Visual
Cortex
Two Visual Pathways in Association Cortex
Organization Of Primary Visual Cortex
1. Ocular Dominance
b
b
Organization Of Primary Visual Cortex
2a. Form Vision
Organization Of Primary Visual Cortex
2b. Form Vision
Orientation
S
i
m
p
l
e
C
o
m
p
l
e
x
C
e
l
l
C Orientation
e
l
l
Position
Direction
Organization Of Primary Visual Cortex
2c. Orientation Columns of Simple Cells
Organization Of Primary Visual Cortex
2b. Form Vision
Orientation
S
i
m
p
l
e
C
o
m
p
l
e
x
C
e
l
l
C Orientation
e
l
l
Position
Direction
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