Experimental conditions. An initial baseline period of fixation was followed by visual exploration (VE). A letter array of 24 × 35 cm2 (~9° × 13°) was presented consisting of about 370 letters set in Arial font with a vertical size of 0.95 cm (~0.36°) per letter at a viewing distance of 150 cm. In the saccade block with visual background (VEC), a cross of red circles was presented in front of the same letter field. In the saccade block without visual background (SC), the same cross was presented, but without the letter field. Each line consisted of 9 dots of a size of 0.5 cm (0.2°) at a distance of 2.75 cm (1°) from each other. A cycle consisting of these three conditions interleaved with baseline periods was repeated 5 times during each of the three experimental runs.