Fitted polar-angle CMF−1 k values for all lower-field and upper-field quadrants of eight visual areasa
| Areas | Lower field: k(−) | Upper field: k(+) | k(−)/k(+) |
|---|---|---|---|
| V1 | 9.0 ± 0.6 | 8.6 ± 1.2 | 1.05 ± 0.16 |
| V2 | 9.5 ± 0.8 | 10.9 ± 1.3 | 0.87 ± 0.14 |
| V3 | 8.1 ± 0.5 | 7.6 ± 0.6 | 1.07 ± 0.10 |
| V4 | 3.6 ± 0.1 | 6.4 ± 0.8 | 0.56 ± 0.08 |
| V4A | 3.5 ± 0.6 | 5.0 ± 0.4 | 0.70 ± 0.19 |
| OTd | 1.8 ± 0.2 | 2.6 ± 0.1 | 0.69 ± 0.12 |
| PITd | 2.0 ± 0.4 | 2.5 ± 0.4 | 0.80 ± 0.24 |
| PITv | 2.4 ± 0.5 | 3.8 ± 0.4 | 0.63 ± 0.22 |
↵aErrors are SEM for k values (n = 3) and Gauss-propagated errors for the ratios. Fit values correspond to the lines Mp−1 = (E + a)/k in Fig. 18D with an average value of amean = 2.7 ± 0.7 (SEM) as determined along the HM in area V1 of the individual subjects. The ratio k(−)/k(+) represents the ratio of LF to UF k values and indicates the presence of asymmetries in the k values for areas V4,V4A, OTd, and PITv.