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