Figure 1.

Task and behavioral results. a, The six pictures represent the task at three different stages. First, a white ball appeared at the left side of the screen and moved diagonally across the screen in seven steps (its previous trajectory is indicated by the dashed line). After reaching the gray occluding band, the ball disappeared underneath for one step. When the ball reappears, it contains either an upright (50%) or a tilted (50%) cross. Temporal expectations were induced by the rhythm of the balls during the preocclusion period. b, A bar graph indicating the mean reaction time averaged over subjects for targets in valid, neutral, or invalid trials appearing after the short or long occlusion intervals (n = 20). Error bars indicate the SEM.