In fact, the differential activation (reflected by Cohen’s d) we observed in V1 was not exceeded by those in V2 and V3 and did not reach statistical significance in a respective ANOVA.
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Nonetheless, based on the magnitude of R 2 , a negative trend in the task-effect with both MD (V1: 0.29; V2: 0.49) and the percentage of VF loss (V1: 0.18; V2: 0.38) in V1 and V2 was indicated, but not for V3.
This effect was also significant in glaucoma V3 ( t = 10.2; p = 0.006), while the same trend in V2 ( t = 2.8; p = 0.069) failed to reach significance ( Figures 2B,C ).
While there was an overall trend for smaller cortical thickness in the patient group [cortical thickness controls vs. patients (mm) mean ± SEM: 1.76 ± 0.03 vs. 1.65 ± 0.02 (V1); 1.99 ± 0.05 vs. 1.93 ± 0.05 (V2); 2.31 ± 0.07 vs. 2.08 ± 0.05 (V3)], this did not reach significance.