Sleep Physiology

• 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.