Sleep

2. Images, scenes, motions, feelings, etc. that mostly occur involuntarily during REM sleep
5. Stage of sleep where sleepers are harder to awaken, and there is loss of muscle activity & conscious awareness of external environment gone
6. Feeling of being conscious (awake) but unable to move or speak. Occurs when someone passes between the stages of sleep and wakefulness
8. Refers to physical, mental, and behavioral changes that follow a 24 hour cycle
11. Model that areas of the brain involved in emotions and memories (amygdala & hippocampus) are activated during REM. Brain attempts to find meaning in these signals = dreams
13. Theory that dreams facilitate info-processing, one of the reasons why we sleep. Allow us to prepare for change or rehearse for things to come
14. Stage of sleep is also called slow-wave sleep (SWS) or deep sleep. Thought to be most restful state
15. This theory states that sleep allows physiological & psychological functioning to be maintained

1. Stage of sleep when most muscles are paralysed and other aspects unregulated. People typically have their most vivid dreams during this stage
3. This theory states that periods of activity & inactivity evolved as a way to conserve energy
4. Behavior disorder occurs during deep sleep. Involves walking and/or performing behaviors while asleep
5. Stage of sleep that occurs between sleep & wakefulness, and often involves some twitching & other movement
7. Screaming, intense fear, and/or flailing during sleep. Differs from a nightmare in that you do not wake up and usually do not remember anything about it
9. Rare sleep disorder that causes sudden attacks of sleep
10. An altered state of consciousness when one is more open to suggestion and instruction
12. Theory that dreams represent our unconscious desires, feelings, and thoughts that we normally suppress. Dreams provide an outlet for our real feelings
13. This theory states that sleep allows us to learn from and process the day