Snooze Clues

5. Evolutionary theory suggesting that periods of activity and inactivity evolved as means of energy conservation
7. gradually lose responsiveness to stimuli and experience drifting thoughts and images
10. serves as a time cue to the biological clock and promotes sleep anticipation
12. result from diseases, trauma, blow in the head, or medical anesthesia
14. during stage 3 and 4 you are in a ______ sleep
15. Lag physiological condition resulting from alterations to body's circadian rhythms caused by long-distance trans-meridian travel
16. In the morning, eyes and brain are signaled that it is time to wake-up by ________
17. biological clock regulating physiological responses within 24 hours time period
20. Restorative theory stating sleep allows the body to repair and replete cellular components necessary for biological functions

1. Circadian clock also referred as midnight-snack clock
2. difficulties in either going to sleep or staying asleep through the night
3. requires low level of awareness, often occurs during automatic processes that involves fantasizing
4. Different levels of awareness
6. Each cycle of sleep has _______ stages
8. arouses and alerts the forebrain and prepares it to receive information from all the senses
9. stage in sleep that is highly associated with dreaming
11. we go to sleep several hours after a fall in body _______________ and get up when it starts to rise
13. effect of sleep deprivation causing someone to experience unreal events
18. theory that dreaming occurs because brain areas that provide reasoned cognitive control during the waking state are shut down
19. chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep