Effects of spatial cues on eye position offsets and eye velocity gain. (A) Eye position offsets during the probe interval measured during leftward pursuit (left-filled diamonds), fixation (open cicles), and rightward pursuit (right-filled diamonds). Data from these trials were sorted according to the cue condition, as indicated along the x-axis. Symbols show group means, with 95% confidence intervals, which in each case are smaller than the height of the symbol. (B) Gain of eye velocity during the probe interval during leftward and rightward pursuit, sorted according to cue condition. Conventions as in (B).