Uninterrupted sleep for the amount of time your brain requires, gives you the opportunity to move through all the sleep stages to receive the amount of slow-wave sleep that is key to feeling restored when you awaken. Frequent sleep disruptions is a relatively common occurrence among new parents, health care personnel who are on-call, and individuals with insomnia. A common symptom of insomnia involves negative mood changes, although the biological reasons for this have been unclear. A study by researchers at Walter Reed Army Institute of Research and Johns Hopkins University School of Medicine decided to investigate the link between insomnia and a depressed mood. To do this, they brought three groups of healthy participants into the sleep lab for three nights. The results of the study were reported in the journal Sleep.
- The First group were allowed to sleep normally
- The Second group had their usual bedtime delayed
- The third group were awakened on purpose throughout the night