Table 1.

Statistical analyses performed

Analysis	Statistical test	Power
Distribution significantly shifted from a point	One-sampled Wilcoxon signed-rank test	p < 0.05
Comparison between models	Brown–Forsythe test	p = 100 = 1; the best model
Comparison between distributions	Mann–Whitney U test	p < 0.05
Transformation between the visual and the motor responses for VM neurons	Wilcoxon matched-pairs signed-rank test	p < 0.05
Spatial tuning test for a neuron	CI (see above in the section ‘Testing for spatial tuning’)	p < 0.05
Comparison between VM and motor neurons in SEF and FEF	Three-factor ANOVA analysis	p < 0.05
Correlation between T-G and T-T’	Spearman correlation	p < 0.05