Representative Eye Traces During Fixation and During Smooth Pursuit.

<p>(Left) Representative record showing horizontal (H) and vertical (V) eye movements over time during 5 seconds of fixation of the stationary target. Participant ASD7. (Right) Representative record showing horizontal (H) and vertical (V) eye movements during 1.3 seconds of smooth pursuit of the disc moving down the tube; cued condition. The disc entered the right oblique branch at time = 0. Participant ASD4. The vertical lines represent computer-generated markers showing beginning and end of saccades. Upward deflections indicate movements to the right or up. The separation between tic marks on the ordinate are 1 degree (60 min arc). Horizontal anticipatory smooth eye movements to the right, in the direction of cued motion, can be seen prior to time = 0 in the graph on the right.