Psych Exam 2 Study Guide

Psych Exam 2 Study Guide - PSY 1000 EXAM 2 STUDY GUIDE...

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PSY 1000 EXAM 2 STUDY GUIDE Fall, 2006 Chapter 4 1. Consciousness --Everything of which we are aware at any given time, our thoughts, feelings, sensations, and perceptions of the external environment. 2. Altered states of consciousness --Changes in awareness produced by sleep, meditation, hypnosis, and drugs. 3. Circadian rhythm --The regular fluctuations from high to low points of certain bodily functions and behaviors over a 24 hours period. 4. Jet lag --When traveling, you reach your destination at a time when it is daylight there, but it would have been time to go to sleep at the place you started. 5. Functions of sleep – restorative theory, circadian theory --Restorative theory —Being awake produces wear and tear on the body and the brain, while sleep serves the function of restoring body and mind. --Circadian theory ---Sleep evolved to keep humans out of harms way during the dark of night, possibly from becoming prey for some nocturnal predator. 6. Microsleep --A momentary lapse from wakefulness into sleep, usually occurring when a person has been sleep-deprived. 7. NREM sleep --Sleep in which there are no rapid eye movement; heart rate and respiration are slow and regular, there is little body movement, and blood pressure and brain activity are at their lowest points of the 24-hour period. 8. REM sleep – what it is, why it’s important --Is a type of sleep characterized by intense brain activity including rapid eye movements, paralysis of large muscles, fast and irregular heart and respiration rates, increased brain-wave activity, and vivid dreams. --Researchers say that REM sleep aids in information processing, helping people sift through daily experience, to organize and store in memory information that is relevant to them. 9. REM rebound --An increase in the amount of REM sleep that occurs after REM deprivation --Often associated with unpleasant dreams or nightmares --Alcohol, amphetamines, cocaine, and LSD suppress REM sleep, and withdrawal from these drugs results in a REM rebound. 10. Sleep cycle – sequence of stages --Stage 1 ---Transition stage between waking and sleeping --Stage 2 ---Puts a person somewhat more deeply asleep and harder to awaken. --As sleep gradually becomes deeper, brain activity slows, and more delta waves appear in the EEG --Stage 3 ---Entered when the EEG registers 20% delta waves; this is the beginning of slow-wave sleep.
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--Stage 4 ---Occurs when delta waves reach more than 50% ---This is the deepest sleep and when the person is the hardest to wake. 11. Slow-wave sleep --Deep sleep associated with stage 3 and stage 4 sleep. 12. Delta waves --Slowest brain wave pattern --Associated with Stage 3 and 4 NREM sleep 13. Dream theories – Freud’s theory vs. activation-synthesis theory --Freud ---Believed that dreams function to satisfy unconscious sexual and aggressive wishes. --Activation-synthesis
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This note was uploaded on 04/20/2008 for the course PSYCH 1000 taught by Professor Karsten during the Fall '05 term at Western Michigan.

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Psych Exam 2 Study Guide - PSY 1000 EXAM 2 STUDY GUIDE...

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