highly significantp < 0.001
We found a highly significant effect of electrode site on saccade direction (p ≪ 0.001, F = 84.14, d.f. = 3, see Fig. 2 ), but also the stimulation current impacted the direction (p < 0.001, F = 16.39, d.f. = 1) as well as the interaction of current and electrode (p < 0.001, F = 6.94, d.f. = 3), indicating that the rotational change induced by a higher current was not consistent across electrodes.