Fig. 9.

Some trials in the sedative groups showed alterations in the post-saccadic profiles, with clear post-saccadic backward drifts, the largest affecting the primary saccade (arrow). In these trials, the primary saccade was always hypometric and followed by two or more corrective saccades. Smaller backward drifts were often present also after the corrective saccades, but the subject was able to hold the eye position at the end of the sequence indefinitely. The asterisk indicates the first intrasaccadic interval, which duration was 108 ms. 15° rightward trial, propofol group, subject 060MB, trial 1447, target concentration 1.60 μg/ml; estimated concentration 1.13 μg/ml. Vertical axis: target position (grey trace); horizontal right eye position (continuous black trace); horizontal right eye velocity (dotted black trace). Position and velocity scales reported on the y-axis. Horizontal axis: time in ms.