Across
- 2. third stage of sleep; deep sleep characterized by low frequency, high amplitude delta waves
- 3. one of a class of drugs that results in profound alterations in sensory and perceptual experiences, often with vivid hallucinations
- 8. brain’s control of switching between sleep and wakefulness as well as coordinating this cycle with the outside world
- 14. second stage of sleep; the body goes into deep relaxation; characterized by the appearance of sleep spindles
- 15. clearing the mind in order to achieve a state of relaxed awareness and focus
- 16. consistent difficulty in falling or staying asleep for at least three nights a week over a month’s time
- 17. internal cycle of biological activity
- 20. one of a group of sleep disorders characterized by unwanted, disruptive motor activity and/or experiences during sleep
- 22. awareness of internal and external stimuli
- 24. variety of negative symptoms experienced when drug use is discontinued
- 26. first stage of sleep; transitional phase that occurs between wakefulness and sleep; the period during which a person drifts off to sleep
- 28. people become aware that they are dreaming and can control the dream’s content
- 29. sleep disorder in which the sleeper experiences a sense of panic and may scream or attempt to escape from the immediate environment
- 31. sleep disorder in which the sufferer has uncomfortable sensations in the legs when trying to fall asleep that are relieved by moving the legs
- 33. result of insufficient sleep on a chronic basis
- 34. sleep disorder defined by episodes during which breathing stops during sleep
- 35. device used to treat sleep apnea; includes a mask that fits over the sleeper’s nose and mouth, which is connected to a pump that pumps air into the person’s airways, forcing them to remain open
- 36. state of extreme self-focus and attention in which minimal attention is given to external stimuli
- 37. hidden meaning of a dream, per Sigmund Freud’s view of the function of dreams
- 38. storyline of events that occur during a dream, per Sigmund Freud’s view of the function of dreams
- 39. (also, somnambulism) sleep disorder in which the sleeper engages in relatively complex behaviors
Down
- 1. characterized by high levels of sensory awareness, thought, and behavior
- 4. sleep-deprivedindividuals will experience shorter sleep latencies during subsequent opportunities for sleep
- 5. theoretical repository of information shared by all people across cultures, as described by Carl Jung
- 6. biological rhythm that occurs over approximately 24 hours
- 7. period of sleep characterized by brain waves very similar to those during wakefulness and by darting movements of the eyes under closed eyelids
- 8. infant (one year old or younger) with no apparent medical condition suddenly dies during sleep
- 9. sleep disorder in which the sufferer cannot resist falling to sleep at inopportune times
- 10. endocrine structure located inside the brain that releases melatonin
- 11. collection of symptoms brought on by travel from one time zone to another that results from the mismatch between our internal circadian cycles and our environment
- 12. work work schedule that changes from early to late on a daily or weekly basis
- 13. sleep disorder with periods of interrupted breathing due to a disruption in signals sent from the brain that regulate breathing
- 18. sleep disorder defined by episodes when breathing stops during sleep as a result of blockage of the airway
- 19. tendency to maintain a balance, or optimal level, within a biological system
- 21. hormone secreted by the endocrine gland that serves as an important regulator of the sleep-wake cycle
- 23. lack of muscle tone or muscle weakness, and in some cases complete paralysis of the voluntary muscles
- 25. drug that tends to suppress central nervous system activity
- 27. rapid burst of high frequency brain waves during stage 2 sleep that may be important for learning and memory
- 30. state marked by relatively low levels of physical activity and reduced sensory awareness that is distinct from periods of rest that occur during wakefulness
- 32. period of sleep outside periods of rapid eye movement (REM) sleep