Figure 1 Eye movement recording. (A) Eye movements during fixation of a stationary target. The ocular flutter clearly increased when the target was turned on (vertical arrow). (B) Horizontal visually guided saccades. Note that ocular flutter increased in frequency and amplitude on rightward gaze. (C) Horizontal smooth pursuit. Note that the initial saccade within a saccadic oscillation was systematically directed to the right. Here, an upward deflection corresponds to a rightward eye position. (D) Saccadic oscillations on a large time scale.