Chapter 4 Key Terms

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Across
  1. 2. periods of rest that occur during wakefulness
  2. 5. The _______ rhythm is the biological rhythm that occurs over approximately 24 hours
  3. 8. The underlying or symbolic meaning of a dream, according to Sigmund Freud’s theory of dream function.
  4. 10. and by darting movements of the eyes under closed eyelids
  5. 11. The actual storyline, images, and events that occur in a dream, as described in Freud’s view of dream function.
  6. 12. The stage of sleep characterized by low frequency, high amplitude delta waves.
  7. 14. A dream in which the person realizes they are dreaming and may be able to influence or direct what happens.
  8. 15. The area of the hypothalamus in which the body's biological clock is located
  9. 18. When we have insufficient sleep on a chronic basis we accumulate ___ ___.
  10. 19. A period of sleep characterized by brain waves very similar to those during
  11. 21. type of rbrain wave characteristic during the early part of NREM stage 1 sleep, which has fairly low amplitude and a frequency of 8–12 Hz
Down
  1. 1. awareness of internal and external stimuli
  2. 3. The transitional phase of sleep that occurs when a person drifts off into sleep
  3. 4. The state of consciousness that is characterized by high levels of sensory awareness, thought, and behavior
  4. 6. 2 The stage of sleep that is characterized by the appearance of spindles as the body enters a deep relaxation
  5. 7. The type of brain wave that has a moderately low amplitude and a frequency of 4-7 Hz
  6. 9. a state characterized by decreased physical activity and lowered sensory awareness, making it distinct from waking states.
  7. 11. hormone secreted by the endocrine gland that serves as an important regulator of the sleep-wake cycle
  8. 13. consistent difficulty in falling or staying asleep for at least three nights a week over a month’s time
  9. 16. type of brain wave characteristic during stage 3 NREM sleep, which has a high amplitude and low frequency of less than 3 Hz
  10. 17. type of brain wave characteristic during wakefulness, which has a very low amplitude and a frequency of 13–30 Hz
  11. 20. A period of sleep outside periods of rapid eye movement (REM) sleep