Figure 1
From: Sleep loss impairs cognitive performance and alters song output in Australian magpies
Temporal distribution of NREM and REM sleep of Australian magpies over 72-h EEG recordings for the undisturbed sleep (US), 6-h sleep deprivation (6SD), and 12-h sleep deprivation (12SD) protocols; values are hourly means (%) ± standard error. Significant differences between sleep protocols are shown by asterisks (lmer model and Tukey post hoc test, p < 0.05). The horizontal bars along the top of the figure indicate the photoperiod with daytime in yellow and nighttime in black, and the corresponding nomenclature for each day/night of the experiments, and whether cognitive testing (CT) or song recording (SR) took place.
