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Jit Hon Bong1, Shih-Cheng Yen1, Rodrigo F. Salazar2, Charles M. Gray2 .... If the start time was 40 ms, this meant that the modulation indices were computed ...
Neural Representations of Visual Salience in Primary Visual Cortex Jit Hon Bong1, Shih-Cheng Yen1, Rodrigo F. Salazar2, Charles M. Gray2 1 Department of Electrical & Computer Engineering, National University of Singapore, Singapore 117576, Singapore 2 Center for Computational Biology, Montana State University, Bozeman, Montana 59717, USA

All

Correct

500

600 700 Time (ms)

800

0 500 0

Neuron 1

120

0

0

False

Neuron 2

performance

0.5 2 4 1 Contour Rate 0 (n=48) Positive Contour 15 (n=48) 5Contour 30 (n=48) Control 0 (n=48)

1 0.9 0.8 0.7 0.6

bias = 30.073568 0.7

0.45

264

0.6

0.4

162 0.5

0

60

0.4

False

600 0.5 700 800 1 Time (ms) Rate Positive

100

2

4

120 6 0

0

02

204

40 6

0.1 0 60

20

50 40

160

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60 0.8 -1

0.25

1

0.8 56 0.7 54 0.6 52 0.5 0.4 50 0.3 48 0.2 46 0.1

1 0.6 0.9 0.5

-0.5 0 0.5 Correlation Coefficient

0.4 50

0

58

0.6

0.3

0.5 0.4 0.3

80 75 70 65

1

0.8 0.7 0.6 0.5 0.4 0.3

0.2

all0.2trials

60

0.2

0.1

55

0.1

0.1 0

0

1

0.8 0.4 0.7 0.3 0.6 0.5 0.2 0.4 0.1

Conto Contou all Contou trials

0.9

90 85

lowsalience

0.6

0.4

0.2 95 lowsalience

0.8 0.7

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0.4

control

23 Contour 0 (n=37) (n=6) Contour 35 (n=33) (n=10) Contour 22 70 (n=11) (n=33) 1highmiddlesalience salience 0.9

True Positive Rate

Mean Firing Rate (Hz)

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0

50 800 0

500 600 700 02 600 700 800 0 0.5 1 (ms) Time (ms) Contour 0 (n= False False PositiveTime Rate Contour 35 (n= Figure 8. (A) Upper: The mean firing rate 56 and performance plot when the correlation coefficient wasContour 70 (n= -0.9962 (window: response onset ~ reaction time). The mean firing rate in the control condition was significantly larger than the mean firing rate in the high salience condition (KKW, p