Characteristics of sleep

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Across
  1. 3. The slow, large brain waves characteristic of deep sleep.
  2. 4. The stage of sleep where dreaming occurs.
  3. 6. Brainwaves seen when someone is awake and alert.
  4. 9. Strengthened during REM sleep, this process helps learning and recall.
  5. 10. Moving about or performing actions while in deep NREM sleep.
  6. 13. These brainwaves occur when we are drowsy and just starting to fall asleep
  7. 14. A device that detects, amplifies and records electrical activity of the brain.
  8. 15. A mental experience most commonly occurring during REM sleep.
Down
  1. 1. The part of the body whose electrical activity is recorded by an EMG to measure tone and movement.
  2. 2. Released during NREM sleep, especially in babies and children.
  3. 5. A state of very low muscle tone during REM sleep that prevents acting out dreams.
  4. 7. A sudden muscle contraction that may occur as a person drifts into Stage 1 sleep.
  5. 8. The brain wave pattern seen during light sleep in Stage 1 and 2 NREM.
  6. 11. A device that measures the electrical activity of the muscles controlling eye movement.
  7. 12. The collective term for the first three stages of sleep, dominated by slower brain activity.
  8. 14. A device that detects electrical activity of the heart to monitor heart rate and rhythm.