V1

1
Functional integration and the modulation of
specific pathways
Stimulus-free contextual inputs - u2 e.g.
cognitive set or time
BA39
Stimulus-bound perturbations - u1 e.g. visual
words
y
STG
V4
y
V1
BA37
y
y
y
2
Set u2
Stimuli u1
latent connectivity
induced connectivity
Forward, backward self
The bilinear model
3
The hemodynamic model
neuronal input
state variables
hemodynamic response
4
Self connections and temporal scaling
5
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6
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7
Contextual input adaptation
Sensory input
.4
A2
.4
.8
A1
.4
.8
.4
-.4
A3
neuronal saturation
Output
Drifts and noise
Simulated response
8
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9
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10
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11
The effects of noise
12
Conditional CI
Prior CI
a
b
13
The effects of serial correlations
14
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15
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16
a
b
The effects of HRF variability
17
The effects of temporal scaling
18
The effects of signal dropout (in A2)
19
An empirical example single word processing at
different rates
SPMF
20
Estimated architecture
A2
-.62 (99)
.92 (100)
.37 (100)
A1
.47 (98)
.38 (94)
.37 (91)
WA
-.51 (99)
21
a
b
Responses
Kernels
A2
A1
WA
22
Reproducibility
a
Intrinsic connections (A)
Adaptation (B2)
b
23
ReML error variance estimates
24
a
Attention
Photic
.52 (98)
.37 (90)
.42 (100)
.56 (99)
.69 (100)
.47 (100)
..82 (100)
Motion
.65 (100)
b