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PSY100: week 4 class notes 9/22/16

by: Lorren Roberts

PSY100: week 4 class notes 9/22/16 PSY 100

Marketplace > Central Michigan University > Psychology (PSYC) > PSY 100 > PSY100 week 4 class notes 9 22 16
Lorren Roberts

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Chapter 4: Consciousness and its variations
Introduction to Psychology
Mark A Deskovitz
Class Notes
Intro to Psychology, Psychology
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This 2 page Class Notes was uploaded by Lorren Roberts on Monday September 26, 2016. The Class Notes belongs to PSY 100 at Central Michigan University taught by Mark A Deskovitz in Fall 2016. Since its upload, it has received 15 views. For similar materials see Introduction to Psychology in Psychology (PSYC) at Central Michigan University.


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Date Created: 09/26/16
Chapter 4: consciousness and its variation Consciousness  Immediate awareness of thoughts, sensations, memories, and what is going on around  you  Allows you to tell past, present and future behaviors, and gives you the abilities to be able to plan and communicate with others  Attention­ the capacity to focus all awareness on a particular stimuli o Characteristics: 1. Limited capacity­ cannot pay attention to all things in our environment so we  focus on things relevant to our immediate or long term goals 2. Selective­ focus on a particular external stimuli or internal thought (past  experiences/who we are) ­ Ex: focusing on having a conversation with one person at a party and  ignoring all the other conversations around you (cocktail party effect) 3. Can be “blind” ­ Misdirection­ drawing attention away from something (i.e. a magician) ­ Inattentional blindness­ occurs when we don’t notice an object or  event in our direct field of vision (inattentional deafness­ not hearing a  person talking to you) ­ Change blindness­ not noticing when something changes o Multi­tasking (divided attention)­ paying attention to 2 or more sources of stimuli  at once   Can’t actually process 2 things simultaneously Sleep  NREM (non­rapid­eye­movement) sleep­ body functions and brain activity slow down  for quiet sleep o Divided into 4 stages: 1. Transitional stage where you gradually fade from conscious awareness  (mixture of alpha and theta brainwaves) ­ Alpha brainwaves­ associated with relaxed wakefulness and  drowsiness ­ Theta brainwaves­ slower brainwaves than alpha 2. Brain activity continues to slow down, breathing becomes rhythmical, slight  muscle twitches may occur (mixture of sleep spindles, k complexes, theta  brainwaves, and beginning of delta brainwaves ­ Sleep spindles­ short bursts of brain activity ­ K complex­ single, high voltage spikes of brain activity ­ Delta brainwaves­ larger, slower brainwaves than theta 3. Delta waves represent more than 20% of brain activity (mixture of theta and  delta waves) 4. Heart rate, blood pressure and breathing drop to lowest levels, delta waves  represent 50­100% of brain activity  REM (rapid­eye­movement) sleep­ associated with heightened body and brain activity,  dreaming occurs o Brain becomes more active, generating smaller and faster brainwaves  Changing patterns o Percentage of time spent in NREM sleep gradually increases from childhood  through late adulthood o Percentage of time spent in REM sleep increases during childhood and  adolescence, remains stable through adulthood, and decreases during late  adulthood  Sleep disorders o Insomnia­ a condition in which a person regularly experiences an inability to fall  asleep, stay asleep, or to feel adequately rested by sleep  Causes daytime sleepiness, fatigue, impaired social or occupational  performance, and mood disturbances o Obstructive sleep apnea­ when a person repeatedly stops breathing during sleep  Causes daytime grogginess, poor concentration, memory and learning  problems, and irritability o Narcolepsy­ excessive daytime sleepiness and brief, uncontrollable episodes of  sleep  Cataplexy­ sudden loss of voluntary muscle strength and control  Factors of development include chromosomal, brain, neurotransmitter, and immune system abnormalities o The parasomnias­ collection of sleep disorders characterized by undesirable  physical arousal, behaviors, or events during sleep or sleep transitions  Sleep terrors­ characterized by an episode of increased physiological  arousal, intense fear and panic, frightening hallucinations, and no recall of  the episode the next morning  Sleepsex­ involves abnormal sexual behaviors and experiences during  sleep  Sleepwalking­ characterized by walking or performing other actions  during sleep  Sleep related eating disorder­ sleepwalking and eating compulsively  during sleep  REM sleep behavior disorder (RBD)­ characterized by the brains inability  to suppress voluntary actions during REM sleep, resulting in the sleeper  verbally and physically responding to the dream


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