. Author manuscript; available in PMC: 2017 Aug 17.

Published in final edited form as: Neuron. 2016 Aug 4;91(4):893–904. doi: 10.1016/j.neuron.2016.07.015

Table 2.

Retinotopy summary from 6 imaging regions. The first four (Regions a–d) are shown in Fig. 4, in the same order. 2^nd column: Animal the region was recorded in. 3^rd column: R² of the fit of a 2D plane to the X-position retinotopy map. Asterisk indicates F-test p-value < 0.01. 4^th column: Same, for Y-position retinotopy map. 5^th column: Average and standard deviation of RF width (2σ), computed from a Gaussian fit along the axis perpendicular to the orientation preference. 6^th column: Relative scatter, computed as the mean of the scatter distribution. Each point of the scatter distribution is the RF’s absolute distance from the X and Y planar fits, divided by the RF width (σ). 7^th column: The inverse of the maximum slope in the X-plane fit. 8^th column: The inverse of the maximum slope in the Y-plane fit. 9^th column: The angle of intersection between the gradients of the X and Y planar fits. 10^th column: Areal magnification factor by computing the inverse of the Jacobian from the X and Y planar fit gradients. 11^th column: Point-image size, computed from RF width, magnification factor, and absolute scatter. The double-asterisk indicates that magnification was computed only from the X-plane, as a significant fit was not identified for the Y-plane fit. 12^th column: Correlation coefficient between pairwise change in orientation preference and distance between RFs (normalized by sum of widths). Asterisk indicates p<0.01. 13^th column: Same pairwise comparison, but after subtracting the planar fits from the X and Y RF positions.

Imaging region

Animal ID

R_{\hat{X}}^{2}

R_{\hat{Y}}^{2}

RF width (deg) (2σ)

Scatter/σ

1/|∇X̄| (mm/deg)

1/|∇Ȳ| (mm/deg)

|∠∇X̄ − ∠∇Ȳ|

Mag. factor (mm²/deg²)

Point-image size (mm)

r (ΔOri vs. ΔPos/σ)

r (ΔOri vs. ΔPos/σ -Plane)

0.69*

0.64*

1.30 +/−0.10

0.13

0.49

0.60

39°

0.47

0.91

0.35*

0.01

0.18*

0.35*

0.54 +/−0.09

0.17

2.78

2.11

97°

5.90

1.35

0.10*

−0.0002

0.51*

0.66*

1.08 +/−0.13

0.11

1.37

0.77

53°

1.33

1.26

0.16*

0.009

0.34*

0.13

1.02 +/−0.12

0.15

1.05

1.07**

0.13*

−0.0007

0.20*

0.27*

0.80 +/−0.06

0.17

1.60

1.37

88°

2.20

1.22

0.08*

0.03

0.62*

0.34*

0.74 +/−0.07

0.16

0.85

2.63

126°

2.78

1.26

0.22*

0.06*