States of Consciousness

123456789101112131415161718192021
Across
  1. 3. Deepest stage of sleep with lowest heart rate and breathing
  2. 6. Biological rhythms occurring more than once per day
  3. 7. Brief dreamlike hallucinations occurring in early sleep
  4. 9. The repeating 90-minute pattern of sleep stages
  5. 12. The body's 24-hour biological clock
  6. 13. Brain structure that regulates circadian rhythms
  7. 15. Brain waves associated with being awake and alert
  8. 16. Short bursts of brain activity in Stage 2 sleep
  9. 18. Disorder with sudden sleep attacks and excessive daytime sleepiness
  10. 19. Moving around while still asleep
  11. 20. Intense frightening episodes occurring during deep sleep
  12. 21. Sleep stage making up about 50 percent of total sleep time
Down
  1. 1. Hormone that regulates sleep-wake cycles
  2. 2. A dream where the sleeper is aware they are dreaming
  3. 4. Sleep stage where vivid dreaming occurs
  4. 5. Theory that sleep helps the body repair itself
  5. 8. Brain waves associated with deep sleep
  6. 10. Theory that dreams are the brain making sense of random neural activity
  7. 11. Hidden meaning of a dream according to Freud
  8. 14. Disorder where breathing repeatedly stops during sleep
  9. 17. Measures electrical activity in the brain