Title: Helen Wills
1TOP-DOWN PREFRONTAL CONTROL of SENSORY
PROCESSING Bob Knight Department of
Psychology Helen Wills Neuroscience
Institute UC Berkeley
Helen Wills 8-time Wimbledon champion
2FRONTAL SUBDIVISIONS
Ventromedial BA 10, 32, 33,
Orbitofrontal BA 11, 12, 13, 47
Dorsolateral BA 46, 9, 10
Orbitofrontal Cortex BA 11, 12, 13, 47
Ventrolateral BA 44, 45, 47
3LATERAL LESIONS
FRONTAL STROKE
4FULL FIELD ATTENTION
Target
Standard
Novel
5STANDARDS
6EARLY TOP DOWN MODULATION
?
? Tonic or Attention Dependent Input 100msec
7Target
8TARGETS
N2
N1
-
m
2
V
P3b
0
800
400
ms
m
3
V
FRONTALS
CONTROLS
m
- 3
V
CONTROLS
FRONTALS
9(No Transcript)
10LATE TOP DOWN MODULATION
? Tonic or Attention Dependent Input 100msec
Target Detection 200-800 msec
11HEMIFIELD ATTENTION
Yago et al, in press
12PURE ATTENTION ACTIVITY (Attend-Ignore)
13TOP DOWN MODULATION
? Tonic or Attention Dependent Input 100msec
Tonic Excitatory Input Onset 100msec
Target Detection 200-800 msec
14FRONTAL DEPENDENT LATE ATTENTION
N1
N2
P1
15THREE TOP DOWN MECHANISMS
Tonic Excitatory Input Onset 100 msec
Selective Attention 150- 350 msec
Template Match 200-800 msec
16INFERIOR PARIETAL EARLY ATTENTION
N1
N2
P1