full transcript

From the Ted Talk by Sara C. Mednick: How long should your naps be?

Unscramble the Blue Letters

As you fall asleep, you enter Stage 1: the first two to five minutes of sleep. satge 2 comes next, for about 30 minutes. In Stage 2, body temperature drops, muscles relax, and bhtiearng and heart rate become more regular. Your neurons start to fire in unison, creating wevas of activity that sweep across the cortex, punctuated by rpaid bursts of neural activity caelld sleep spindles. As you enter Stage 3, or slow wave sleep, the rolling waves insrcaee as your nuroens fire in coordination. This phase lasts about 20 to 30 minutes and is where your deespet sleep ocucrs. Then, you enter REM sleep, which lasts about 10 to 20 minutes in a nap. In REM, the brain becomes more active, more like your brain activity while awkae. The end of REM signals the completion of a sleep cycle.

Open Cloze

As you fall asleep, you enter Stage 1: the first two to five minutes of sleep. _____ 2 comes next, for about 30 minutes. In Stage 2, body temperature drops, muscles relax, and _________ and heart rate become more regular. Your neurons start to fire in unison, creating _____ of activity that sweep across the cortex, punctuated by _____ bursts of neural activity ______ sleep spindles. As you enter Stage 3, or slow wave sleep, the rolling waves ________ as your _______ fire in coordination. This phase lasts about 20 to 30 minutes and is where your _______ sleep ______. Then, you enter REM sleep, which lasts about 10 to 20 minutes in a nap. In REM, the brain becomes more active, more like your brain activity while _____. The end of REM signals the completion of a sleep cycle.

Solution

  1. stage
  2. increase
  3. occurs
  4. deepest
  5. awake
  6. neurons
  7. breathing
  8. waves
  9. rapid
  10. called

Original Text

As you fall asleep, you enter Stage 1: the first two to five minutes of sleep. Stage 2 comes next, for about 30 minutes. In Stage 2, body temperature drops, muscles relax, and breathing and heart rate become more regular. Your neurons start to fire in unison, creating waves of activity that sweep across the cortex, punctuated by rapid bursts of neural activity called sleep spindles. As you enter Stage 3, or slow wave sleep, the rolling waves increase as your neurons fire in coordination. This phase lasts about 20 to 30 minutes and is where your deepest sleep occurs. Then, you enter REM sleep, which lasts about 10 to 20 minutes in a nap. In REM, the brain becomes more active, more like your brain activity while awake. The end of REM signals the completion of a sleep cycle.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
sleep cycles 2
enter stage 2
sleep stage 2
sleep spindles 2
brain activity 2
minute nap 2
deep sleep 2

Important Words

  1. active
  2. activity
  3. asleep
  4. awake
  5. body
  6. brain
  7. breathing
  8. bursts
  9. called
  10. completion
  11. coordination
  12. cortex
  13. creating
  14. cycle
  15. deepest
  16. drops
  17. enter
  18. fall
  19. fire
  20. heart
  21. increase
  22. lasts
  23. minutes
  24. muscles
  25. nap
  26. neural
  27. neurons
  28. occurs
  29. phase
  30. punctuated
  31. rapid
  32. rate
  33. regular
  34. relax
  35. rem
  36. rolling
  37. signals
  38. sleep
  39. slow
  40. spindles
  41. stage
  42. start
  43. sweep
  44. temperature
  45. unison
  46. wave
  47. waves