psych study guide 2

psych study guide 2 - STUDY GUIDE Test 2 CH 7 What is...

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STUDY GUIDE Test 2 CH 7 What is consciousness? Consciousness is our awareness of ourselves and our environment. What are the types of mental processing without awareness we covered? Priming research - exposing someone to something before an experiment (ex. feet/feat… mention “that was a great feat” more likely to spell it feat not feet) Mere-exposure effect - our tendency to like things that we’re familiar with Blindsight - Consciously blind, subconsciously can process info (ex. Guess what color was flashed in front of them, they mostly will guess correctly.) What is sleep? What is a circadian rhythm? What is the suprachiasmatic nucleus and where is it located? Does everyone have the same rhythm of alertness? During sleep, we are in an altered consciousness. (Body is not active, but mind is very active.) Circadian rhythm is your body’s natural (biological) clock. (Sleep/hormones/temperature- ex. Body’s temperature rises as morning approaches, peaks during the day, drops again when we go to sleep.) Suprachiasmatic nucleus of hypothalamus - body cycle, it is genetic. Ex. Some people are morning/night people, etc. No, everyone does not have the same rhythm of alertness. (see above) What are the stages of sleep? How does the EEG change during the stages of sleep? EEG- Electro esepherogram, measures electrical activities in the brain, changes in the stage of sleep. Stages 1-4- gets deeper into sleep, EEG waves get higher amplitude the higher level of sleep. Slow-wave sleep- levels 3-4, most likely to sleep walk How does one progress through the sleep stages during a night’s sleep? Level 1, 2, 3, 4, 3, 2, 1, REM, 1, 2, 3, 4, 3, 2, 1, REM, 1, 2, 3, 2, 1, REM…etc Sleep cycles=90 mins, more REM as the night progresses. Why is REM sleep paradoxical? REM= Rapid eye movement sleep, where most dreaming takes place. Body paralyzed during REM, mind awake. What happens when someone goes without sleep? It depends on the person; some people need more sleep than others. When people go without sleep experiments have shown: Increased errors on visual tasks, suppression of the immune system, irritability, impaired communication, etc. After staying awake too long, people will enter microsleeps (sleep for seconds at a time) What are some of the proposed functions of sleep?
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Amount we need depends on genetic influence… we don’t know why we sleep, we spend 1/3 of our lives asleep. Theories (of why we sleep): Restorative - Neurons repair themselves, body makes proteins, etc. Restores the body. Learning & memory - Sleep helps us consolidate new memories, we’re better at solving problems after sleeping. Who dreams? Everyone, some people just don’t remember their dreams. What is REM rebound?
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This note was uploaded on 04/06/2008 for the course PSYC 100 taught by Professor Wyland during the Spring '08 term at Tulane.

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psych study guide 2 - STUDY GUIDE Test 2 CH 7 What is...

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