Figure 6.

A. Gap thresholds for Experiment 2, with stimulus conditions (unflanked, horizontal flankers, and vertical flankers) tested in three motion conditions: no motion, motion-fixation and motion-following. The green bars represent the unflanked condition, blue bars represent horizontal flankers and the red bars represent vertical flankers. Gap thresholds are shown on the left-hand y-axis in minutes of arc and on the right-hand axis with corresponding logMAR values. Dashed colored lines plot average thresholds for the nystagmus participants for each condition in Experiment 1. * = significant and ns = not significant, error bars represent the SEM. (B–D) Horizontal flanker gap thresholds for each individual plotted on the x-axis against vertical flanker gap thresholds on the y-axis, separately for the three motion conditions. The black line represents perfect correspondence between horizontal and vertical flanker thresholds. Purple circles represent individual participants, note the individual X and Y scales.