Figure 4.

Hour-by-hour minutes of sleep for baseline and device in the sham condition. The baseline and sham lines represent the median ± first and third quartile minutes per hour of sleep across the night for the baseline and sham device nights for subjects in the sham condition. The “Normal” line is a hypothetical hour-by-hour minutes per hour of sleep reference line for a good sleeper defined as 85% sleep efficiency with sleep latency of 15 minutes and assuming 45 of 60 minutes of sleep for hour 8.