Fig. 2

Graphical representation of ANOVA among SCI, MCI, mAD, msAD, and control groups. Box and whisker plots show the median (lines), 25th to 75th percentiles (boxes), and full spread (whiskers) of all the variables. a REM sleep. b Stage 1 of non-REM sleep (N1). c Stage 3 of non-REM sleep (N3)