- Circadian Rhythms
The circadian rhythm, commonly known as the biological clock, takes place in 24-hour cycles
- Sleep phase synchronization
The synchronization of body functions that take place during the different phases of sleep.
- Sleep latency
Number of minutes before onset of measurable sleep cycles
- Sleep/REM cycles
REM Rapid eye movement (REM) sleep, is the mentally active period of sleep during which dreaming occurs and the brain processors information.