Figure 3.

Distribution of the amplitude of slow waves during early and late NREM sleep. Proportion of slow waves in each amplitude range in early (first cycle, horizontal striped bars) and late sleep (last cycle, filled bars), in each group. Repeated-measure ANOVA with factors “time” (early—late) and “group” (RBD, NMC, MC) were performed for each amplitude bins. # indicate a significant (p < 0.01) main effect of “time” and Bonferroni-corrected post-hoc tests *indicate an effect of “time” only in control groups (“group” × “time” p = 0.021).