Fig. 3 –
A. The majority of REM sleep bouts show a pattern of decreasing theta power from the early epochs to the later epochs (*=different from 1st epoch, #=different from 2nd epoch, +=different from mid epoch); B. 26.6% of REM sleep bouts show significantly higher theta power in the last epoch compared to the first (*) and 2nd to last (&) epochs (p<0.01).