Content uploaded by Terrence Sejnowski
Author content
All content in this area was uploaded by Terrence Sejnowski on Jan 01, 2015
Content may be subject to copyright.
Head-centered
coordinates
Eye
position
Head
position
Shoulder
position
Arm-centered
coordinates
Body-centered
coordinates
Joint
coordinates
Eye-centered
coordinates
Movement
Visual Target
Arm
position
B
A
Activity
Retinal Position (Deg)
e = 0
e = 20
x
x
-10
0
20
40
60
-40 -20 0 20 40
e
y
e
x
0
0
Activity
r (Deg)
x
0 40-20-40 20
Activity
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
r
x
e
x
e = -20
e = 0
e = 20
x
x
x
e
x
r
x
e
x
r
x
Eye Position
Units
Hidden Layer
e
x
r
x
e
x
r
x
r
x
a
x
Retinotopic
Map
Head-Centered
Map
Head-Centered Retinotopic
e
x
r
x
e
x
r
x
e
x
r
x
e
x
r
x
e
x
r
x
e
x
r
x
-10
0
20
40
60
-40 -20
rx
0 20 40
0
10
20
30
-40 -20 0 20 40
ry
-5
0
10
20
30
-40 -20 0 20 40
ry
Response (spikes/s)
Retinotopic Position (°)
-10
0
20
40
60
-40 -20 0 20 40
ry
0,0
0,20
0,-20
20,-20
-20,-20
20,0
-20,20
A B
C D
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
x
y
e
e
x
y
e
e
0
5
10
15
20
25
Number of cells
θ (Deg)
-80< -72 -60 -48 -36 -24 -12 0 12 24 36 48 60 72 >80
θ
e
x
e
y
Firing Rate
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
R
x
y
R
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
-40
-20
0
20
40
r
x
e
x
r
x
e
x
r
x
e
x
r
x
e
x
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
a
y
a
x
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
a
y
a
x
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
a
y
a
x
a
y
a
x
a
y
a
x
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
a
y
a
x
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
a
y
a
x
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-4 0
-2 0
0
20
40
-180 -90 0 90 180
θ (Degree)
A