Figure 1.

Overview of the 4-day inpatient part of the study protocol. Black bars (0 lux) indicate the sleep episodes and white bars the wake episodes (< 8 lux). The hatched bars indicate controlled posture (semi-recumbent during wakefulness and supine during sleep). BL = baseline night, RC = recovery night (modified from Munch et al., 2005¹⁸).