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Chapter 5 States of Consciousness California Dreaming – The Mamas and the Papas
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Why is the study of consciousness important? Consciousness can take many forms, while other mental processes occur simultaneously outside our awareness
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What Consciousness Does For Us Restricts our attention Combines sensation with learning and memory Allows us to create a mental model of the world that we can manipulate
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Levels of Consciousness Conscious Preconscious Unconscious Nonconscious Subconscious Present Awareness No Conscious Processing Just below awareness Past awareness No awareness
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What Cycles Occur in Everyday Consciousness? Consciousness changes in cycles that correspond to our biological rhythms and the patterns of stimulation in our environment
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What Cycles Occur in Everyday Consciousness? Daydreaming – A common variation of consciousness in which attention shifts to memories, expectations, desires, or fantasies and away from the immediate situation
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Sleep and Dreaming Circadian rhythms – Psychological patterns that repeat approximately every 24 hours The sleep cycle involves: ____________ _____________ REM-sleep deprivation leads to __________
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The Sleep Cycle
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The Function of Sleep Possible functions of sleep include: ______________________ _______________________
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The Need for Sleep Over the years, the need for REM sleep decreases considerably, while the need for NREM sleep diminishes less sharply
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Sleep Debt vs. The Circadian Clock Sleep debt – Deficiency caused by not getting the amount of sleep that one requires for optimal functioning
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Why do we dream? Sigmund Freud believed dreams served the following two functions: To __________________ To ___________________ Dream content Varies by culture, gender, and age Frequently connects with recent experience May help us form memories
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Dreams as Random Brain Activity Activation-synthesis theory – Theory that dreams begin with random electrical activation coming from brain stem; dreams are brain’s attempt to make sense of this random activity
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Sleep Disorders Insomnia – Involves insufficient sleep, the inability to fall asleep quickly, frequent arousals, or early awakenings Sleep apnea – Respiratory disorder in which person intermittently stops breathing while asleep
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Sleep Disorders Narcolepsy – Involves sudden REM sleep attacks accompanied by cataplexy
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Sleep Disorders Night terrors – The screaming of a child in deep sleep, who, once awakened, has no memory of what mental events might have caused the fear
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What Other Forms Can Consciousness Take? An altered state of consciousness occurs when some aspect of normal consciousness is modified by mental, behavioral, or chemical means
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What Other Forms Can Consciousness Take? Hypnosis Meditation Psychoactive drug states
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Hypnosis Hypnosis – Induced state of altered awareness, characterized by heightened suggestibility and deep relaxation Hypnotizability – Degree to which an individual is responsive to hypnotic suggestions
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Hypnosis As an Altered State Experts disagree about whether hypnosis involves A distinct state of consciousness Heightened motivation Social processes such as role playing A dissociate state (Hilgard’s “hidden observer” view)
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Practical Uses for Hypnosis Hypnosis can have practical uses for ___________________________ ____________________________ Hypnotic analgesia – Diminished sensitivity to pain while under hypnosis
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Meditation Meditation – Form of consciousness change induced by focusing on a repetitive behavior, assuming certain body positions and minimizing external stimulation
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