American Sleep Research Institute

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.