FIG. 1.

(A) Fixation breaks displayed by group during pro‐ (filled) and anti‐ (empty) saccade task. (B) Percent of express saccades during pro‐saccade trials (saccadic reaction time [SRT] >90 ms <140 ms). (C) Median SRTs during the pro (filled) and anti‐ (empty) saccade task. (D) Median amplitude of primary saccades initiated during correct pro‐saccade trials. (E) Percent of direction errors made during the express latency epoch (SRT >90 ms <140 ms) made across groups, and (F) percent of direction errors made during the regular latency epoch (SRT >140 ms) made across groups. One‐way ANOVA with a post hoc Tukey's honest significant difference (HSD) revealed significance between groups *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001. CTRL, healthy, age‐matched controls; RBD, rapid eye movement sleep behavior disorder; PD, Parkinson's disease. [Color figure can be viewed at wileyonlinelibrary.com]