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Transcript of AP PSYCHOLOGY: UNIT IV Introductory Psychology: Consciousness Topic: States of Consciousness.
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AP PSYCHOLOGY: UNIT IV
Introductory Psychology:Consciousness
Topic: States of Consciousness
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Activity: Fact or Falsehood?
Consciousness has an unlimited capacity False
Most university students are “evening” persons whose performance improves throughout the day True
People who sleep seven to eight hours a night tend to outlive those who are chronically sleep deprived True
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Activity: Fact or Falsehood?
The most common dreams are those with sexual imagery False
The majority of characters in men’s dreams are female False
Most psychologists believe that dreams provide a key to understanding our inner conflicts False
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Activity: Fact or Falsehood?
Under hypnosis, people can be induced to perform feats they would otherwise find impossible False
Under hypnosis, people can be induced to perform feats they would otherwise find immoral False
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Activity: Fact or Falsehood?
Those given morphine to control pain often become addicted to the drug False
In large amounts, alcohol is a depressant; in small amounts, it is a stimulant False
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PART ONE
Consciousness: The Basics
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Consciousness: The Basics
Consciousness Awareness of oneself
and one’s environment Both internal & external
stimuli Contents are continuously
changing Consciousness rarely comes
to a standstill Allows for organization,
reflection and planning
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Consciousness: The Basics
Includes… Your awareness of external events
“Oh crap! My professor just asked me a question about medieval history…that I know NOTHING about…”
Your awareness of sensations “My heart is racing & I’m starting to sweat…”
Your awareness of yourself as the unique being that is having these experiences “Why me??”
Your awareness of your thoughts regarding these experiences “I’m going to make a fool out of myself!”
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Consciousness: The Basics
Waking Consciousness State in which thoughts, feelings & sensations
are clear and organized; person feels alert Theories of Waking Consciousness
The Stream of Consciousness • William James
“Sweeping or scanning”40 times per second; each sweep results in a single
image or “moment of consciousness” Iceberg Theory
• Sigmund FreudConsciousness is NOT an all-or-nothing
phenomenon
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The conscious mind processes information sequentially; it is slow and limited
The unconscious mind processes information simultaneously on multiple tracks
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Consciousness: The Basics
Altered States of Consciousness State in which there is a shift in the quality or
pattern of mental activity as compared to waking consciousness Is it possible to divide one’s conscious awareness? YES!
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Consciousness: The Basics
SOME OCCUR SPONTANEOUSLY Daydreaming Drowsiness Dreaming
SOME ARE PHYSIOLOGICALLY
INDUCEDHallucination
sOrgasm
Food or oxygen
starvation
SOME ARE PSYCHOLOGICALL
Y INDUCED
Sensory deprivation Hypnosis Meditation
Altered States of Consciousness
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Consciousness: The Basics
Most common altered state? Sleep; humans spend
approximately one-third of their lives sleeping Do humans maintain
awareness during sleep? YES; some stimuli are
able to penetrate awareness during sleep
Examples?
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Consciousness: The Basics
Where does consciousness come from? Most psychologists believe that it arises from
activity in networks of neural pathways in the brain
How do scientists “measure” consciousness? Electroencephalograph (EEG)
Summarizes electrical activity in terms of brain waves Brain waves vary in:
• Amplitude (height) • Frequency (cycles per second, cps)
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Consciousness: The Basics
EEG Pattern Frequency Typical States of Consciousness
Beta 13-24 Normal waking thought, alert problem solving
Alpha 8-12 Deep relaxation, blank mind, meditation
Theta 4-7 Light sleep
Delta Less than 4 Deep sleep
Chicken-or-Egg Puzzle: If you become drowsy while reading your textbook (which I’m sure you never do), your brain-wave activity will probably change. But are these changes causing your drowsiness, or is your drowsiness causing the changes in brain-wave activity?
Brain Wave Patterns
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Reading Quiz
1. Provide an example of a biological rhythm, other than sleep, that is found in humans.
2. During which stage of sleep do humans often experience the sensation of falling or sudden jerking movements?
3. In stage 3 and 4, humans experience _____ waves.
4. Explain why REM is often referred to as paradoxical sleep.
5. Does REM increase or decrease as the night goes on?
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PART TWO
Consciousness: Biological Rhythms & Sleep
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Consciousness: Biological Rhythms
Biological Rhythms Periodic fluctuations in
physiological functioning thatthe body MUST go through Impact body temperature, blood
pressure, production of certain hormones, effectiveness of medications, etc. Annual cycles 28 day cycles 24 hour cycles 90 minute cycles
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Consciousness: Biological Rhythms
Annual Cycles On an annual cycle, geese migrate, grizzly bears
hibernate & humans experience seasonal variations in appetite, sleep and mood…
Example Seasonal Affective Disorder (SAD)
Mood disorder; dark winter months
28-day Cycles Menstrual cycle Also known as an Infradian Rhythms
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Consciousness: Biological Rhythms
24-hour cycles 24-hour cycles of varying
alertness (sleep-wake cycle), body temperature and growth hormone secretion
Also known as Circadian Rhythms; controlled by the brain
90-minute cycles Humans experience various stages of sleep in a
90-minute cycle
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Function Typical Circadian Rhythm
Peak mental alertness and memory functions
Two peaks; 9:00am & 9:00pm
Lowest/highest body temperature 97◦F at 4:00am/99◦F at4:00pm
Peak physical strength Two peaks; 11:00am & 7:00pm
Peak hearing, visual, taste and smell sensitivity
Two peaks; 3:00am & 6:00pm
Lowest/highest sensitivity to pain 4:00pm/4:00am
Peak degree of sleepiness Two peaks; 3:00am & 3:00pm
Peak allergic sensitivity to pollen and dust Between 1:00pm and 1:00am
***All approximations; some variation does exist!!
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Consciousness: Biological Rhythms
The Hypothalamus’ Role The Suprachiasmatic Nucleus (SCN)
A structure located deep within the hypothalamus; sensitive to changes in light; internal clock As daylight fades the SCN tells the pineal gland to
secrete melatonin; SLEEPINESS! Melatonin
A hormone that helps regulate daily biological rhythms
Others? Serotonin? Body temperature? (both correlational…)
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Consciousness: Biological Rhythms
Sleep, the “Gentle Tyrant” Two Kinds of Sleep
REM Sleep (Rapid Eye Movement) NREM Sleep (Non-REM)
Stage 1 Stage 2 Stage 3 Stage 4
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Consciousness: Biological Rhythms
Why do we spend a third of our lives sleeping? Preservation & Protection Theory
Elimination of waste products Repair of cells and brain tissue Strengthens immune system Preserves energy
Restoration Theory General wear & tear; recuperation; muscles & brain
relax Memory
Strengthens/rebuilds fading memories
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PART THREE
Consciousness: Hypnosis
Altered consciousness or role playing?
8 out of 10 people can be hypnotized4 out of 10 people will make “good”
subjects
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Consciousness: Hypnosis
Hypnosis State of consciousness in which the subject is
especially susceptible to suggestion Four Steps in Hypnosis
Focus on what is being said Relax and feel tired “Let go” and accept suggestions Use vivid imagination
Alternate Definition: “Merely a blend of conformity, relaxation, imagination, obedience, suggestion and role-playing…”
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Consciousness: Hypnosis
Posthypnotic Suggestion Suggestion made during session; carried out
after hypnosis Has been shown to help to alleviate headaches,
asthma, skin disorders etc.
Dissociation A split of mental processes into two separate,
simultaneous streams of awareness Has been shown to provide hypnotic pain relief
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Consciousness: Hypnosis
Hypnosis CAN… Hypnosis CANNOT…
Create amnesia for anything that happens during the
session, at least for a brief period of time…
Give people superhuman strength…
Relieve pain by allowing a person to remove conscious
attention from the pain…
Reliably enhance memory…
Alter sensory perceptions such as smell, hearing, vision
and time sense…
Regress people back to childhood…
Help people relax in situations that would normally
cause them stress…
Regress people to some “past life”…
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PART FOUR
Consciousness:Theories of Hypnosis
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Theory: Divided Consciousness
Ernest Hilgard (1994) Also know as The Hidden Observer Theory Hypnosis is a special state of dissociated, or
divided consciousness Hypnosis works on the immediate consciousness,
while another part of the subject’s mind (the “hidden observer”) remains aware of all that is going on
Similar to behavior that occurs on autopilot
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Theory: Social-Cognitive
Irving Kirsch (2000) Also known as Social Influence Theory People who are hypnotized are not in an altered
state consciousness, but rather playing the role expected of them in the given situation Subjects might actually believe that they are
hypnotized; often unaware that they are role-playing
Highlights the power of social influences
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PART FIVE
Consciousness:Meditation
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Consciousness: Meditation
Meditation A family of practices
that train attention to heighten awareness and bring mental processes under greater voluntary control A deliberate effort to alter
consciousness Rooted in what?
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Consciousness: Meditation
Two Primary Approaches Focused Attention
Attention is concentrated on a specific object, image, sound or bodily sensation
Intent is to narrow attention & clear mind of its clutter
Open-Monitoring Attention is directed to one’s moment-to-moment
experience; nonjudgmental Intent is to become a detached observer
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PART THREE
Consciousness: The Sleep Stages
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Consciousness: Sleep Stages
Stage 1: Light Sleep Brain Activity
Alpha waves decrease; theta waves increase
Characteristics Breathing slows; brain
waves become irregular Occasional twitching Hypnagogic images Hypnic jerks Non-REM
Easy to wake an individual in Stage 1 sleep; will insist
that he or she WAS NOT sleeping!
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Consciousness: Sleep Stages
Stage 2: Sleep Spindles Brain Activity
Brain wave (theta) cycle slows EEG sleep spindles
develop; last 1-2 seconds Characteristics
Sleep-talking The first time through
Stage 2 lasts approximately 20 minutes
Non-REM
Still relatively easy to wake an individual in
Stage 2 sleep
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Consciousness: Sleep Stages
Stages 3 & 4: Deep Sleep Brain Activity
Delta waves increase (larger & slower waves) Stage 3: 20-50% of total brain activity Stage 4: 50%+ of total brain activity; deepest
stage Characteristics
Growth hormones are released & peak during Stage 4
The body is at its lowest level of functioning Non-REM
Very difficult to wake an individual in Stage
4 sleep; will be confused and disoriented…
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Consciousness: Sleep Stages
REM Sleep (Rapid Eye Movement) Brain Activity
Brain waves resemble beta (waking) waves Characteristics
Body temperature rises to near-waking levels Eyes move rapidly & heart rate increases REM Paralysis
Voluntary muscles are paralyzed during this stage 90% of dreams take place during REM Sleep
***Sometimes referred to as paradoxical sleep
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Consciousness: Sleep Stages
Within any given night, humans generally pass through several 90-minute sleep cycles Stage 1 Stage 2 Stage 3 Stage 4 Stage 3 Stage 2 REM
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Consciousness: Sleep Stages
NREM versus REM? NREM – physical needs REM – emotional needs
Potential function of REM dreams? Age and time spent in REM sleep? Age and differences in REM sleep?
REM Rebound?
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PART FOUR
Consciousness: Sleep Issues
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Quiz: Are you Sleep Deprived?
I need an alarm clock to ensure that I wake up at the appropriate time
I struggle to get out of bed in the morningI hit the snooze button several times before I get
upI feel tired, irritable and stressed out during the
weekI have trouble concentrating and rememberingI frequently feel slow with regards to critical
thinking, problem solving and being creativeI often fall asleep while watching TVI often fall asleep during meetings or in warm
rooms
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Quiz: Are you Sleep Deprived?
I often fall asleep after heavy mealsI often fall asleep while relaxing after dinnerI often fall asleep within five minutes of getting
into bedI often feel drowsy while drivingI often sleep extra hours on weekend morningsI often need a nap to get through the dayI have dark circles under or around my eyes
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Consciousness: Sleep Issues
Sleep Deprivation… Decreases the efficiency of the immune system Decreases productivity & the efficiency of
memory Increases safety and accident issues Contributes to hypertension, impaired
concentration, irritability, etc. Potential impact on weight?
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Consciousness: Sleep Issues
Insomnia Chronic problems in getting adequate sleep Three basic patterns
Difficulty in falling asleep Difficulty in remaining asleep Persistent early morning awakening
Causes? Anxiety, depression, health issues, drugs, etc.
1 in 10 adults complain of insomnia Common (though unhelpful) “treatments”
Effect of alcohol and sleeping pills?
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Consciousness: Sleep Issues
Nightmares Anxiety-arousing dreams that lead to awakening,
usually from REM sleep Difficulty in going back to sleep Usually occur in the early morning hours Generally associated with stress
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Consciousness: Sleep Issues
Night Terrors Abrupt arousal from NREM sleep (generally
Stage 4) accompanied by intense autonomic arousal (e.g. rapid heart rate, perspiration, etc.) and feelings of panic Victims may scream or bolt upright & then stare
into space; do not recall a coherent dream Panic fades quickly Most common in children ages 3 to 8 Night terrors are NOT nightmares!
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Consciousness: Sleep Issues
Somnambulism (Sleep-Walking) Occurs when a person
arises and wanders about while sleeping; 15 seconds to 30 minutes Generally occurs during the
first three hours of sleep 15% of children and 3% of adults exhibit persistent
sleepwalking Generally goes away as one ages…
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Consciousness: Sleep Issues
Narcolepsy Periodic and overwhelming sleepiness that leaves
individuals falling asleep while talking or standing up May collapse directly into REM sleep; can last up to
5 minutes
Sleep Apnea Failure to breathe when asleep; many repeated
awakenings Most prominent in overweight males Loud snoring
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Consciousness: Sleep Issues
Bruxism Teeth grinding
Enuresis Bed wetting