Myers’ EXPLORING PSYCHOLOGY (4th Ed) Chapter 5 States of Consciousness James A. McCubbin, PhD...
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Transcript of Myers’ EXPLORING PSYCHOLOGY (4th Ed) Chapter 5 States of Consciousness James A. McCubbin, PhD...
![Page 1: Myers’ EXPLORING PSYCHOLOGY (4th Ed) Chapter 5 States of Consciousness James A. McCubbin, PhD Clemson University Worth Publishers.](https://reader035.fdocuments.us/reader035/viewer/2022062322/56649e365503460f94b266a0/html5/thumbnails/1.jpg)
Myers’ EXPLORING PSYCHOLOGY (4th Ed)
Chapter 5
States of Consciousness
James A. McCubbin, PhDClemson University
Worth Publishers
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States of Consciousness
Consciousness our awareness of ourselves and
our environmentSelective Attention
the focusing of conscious awareness on a particular stimulus
cocktail party effect
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Sleep and DreamsFantasy Prone Personality
imagines and recalls experiences with lifelike vividness
spends considerable time fantasizingCircadian rhythm
the biological clock cyclical bodily rhythms
wakefulness body temperature
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Sleep and DreamsREM (Rapid Eye Movement) Sleep
recurring sleep stage vivid dreams commonly occur also know as paradoxical sleep
muscles are generally relaxed, but other body systems are active
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Brain Waves and Sleep Stages
Alpha Waves slow brain waves of a relaxed,
awake stateDelta Waves
large, slow waves of deep sleep Hallucinations
false sensory experiences
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Typical Nightly Sleep Stages
0 1 2 3 4 5 6 7
4
3
2
1
Sleepstages
Awake
Hours of sleep
REM
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Typical Nightly Sleep Stages
Hours of sleep
Minutesof Stage 4 and REM
1 2 3 4 5 6 7 80
10
15
20
25
5
Decreasing Stage 4
Increasing REM
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Sleep DeprivationEffects of Sleep Loss
fatigue impaired concentration immune suppression irritability slowed performance
accidents• planes• autos and trucks
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Sleep Deprivation
2,400
2,700
2,600
2,500
2,800
Spring time change(hour sleep loss)
3,600
4,200
4000
3,800
Fall time change(hour sleep gained)
Less sleep,more accidents
More sleep,fewer accidents
Monday before time change Monday after time change
Accident frequency
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Sleep Disorders
Insomnia persistent problems in falling or
staying asleepNarcolepsy
uncontrollable sleep attacks sufferer may lapse directly into REM
sleep, often at inappropriate times
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Sleep Disorders
Sleep Apnea characterized by temporary cessations
of breathing during sleep and consequent momentary reawakenings
Night Terrors high arousal- appearance of being
terrified usually in Stage 4, within 2-3 hours of
falling asleep
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Dreams- FreudSigmund Freud- The Interpretation of
Dreams (1900) dreams viewed as wish fulfillment discharge otherwise unacceptable feelings
Manifest Content remembered story line of a dream
Latent Content underlying, censored meaning of a dream
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Dreams
Information Processing View of Dreams the notion that dreams help
consolidate the day’s memories stimulates neural development
REM Rebound tendency for REM sleep increases
following REM sleep deprivation
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Hypnosis
Hypnosis a social interaction in which one
person (the hypnotist) suggests to another (the subject) that certain perceptions, feelings, thoughts or behaviors will spontaneously occur
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Hypnosis
Posthypnotic Amnesia supposed inability to recall
what one experienced during hypnosis
induced by the hypnotist’s suggestion
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Hypnosis and RecallMemory
sometimes a relaxed, focused state can improve recall
“hypnotically refreshed” memories are unreliable
false memories or pseudomemories can be implantedintentionallyunintentionally
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Hypnosis
Unhypnotized persons can
also do this
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Hypnosis
Orne & Evans (1965) control group instructed to “pretend” unhypnotized subjects performed the same
acts as the hypnotized onesPosthypnotic Suggestion
suggestion to be carried out after the subject is no longer hypnotized
used by some clinicians to control undesired symptoms and behaviors
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Hypnosis and Pain
Dissociation a split in consciousness allows some thoughts and behaviors to
occur simultaneously with othersHidden Observer
Hilgard’s term describing a hypnotized subject’s awareness of experiences, such as pain, that go unreported during hypnosis
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HypnosisDivided Consciousness or Social
Phenomenon?
In some way attentionis being diverted from a very aversive stimulus.
How?
Divided-consciousnesstheory:hypnosis has caused a split in awareness
Social influencetheory:The subject is so caught up in the hypnotized Role that she can Ignore the odor
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Drugs and Consciousness
Psychoactive Drug a chemical substance that alters perceptions
and alters mood
Physical Dependence a physiological need for a drug marked by unpleasant withdrawal symptoms
Psychological Dependence a psychological need to use a drug for example, to relieve negative emotions
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Drug Tolerance
Tolerance diminishing effect
with regular use of the same dose of a drug
Withdrawal discomfort and
distress that follow discontinued use of an addictive drug
After repeatedexposure, moredrug is needed to produce same effect
Drug dose
Drug effect
Response tofirst exposure
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Psychoactive Drugs
Depressants drugs that reduce neural activity and
slow body functions alcohol, barbiturates, opiates
Stimulants drugs that excite neural activity
and speed up body functionscaffeine, nicotine, amphetamines
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Psychoactive Drugs
Hallucinogens psychedelic (mind-
manifesting) drugs that distort perceptions and evoke sensory images in the absence of sensory inputLSD
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Psychoactive Drugs
Barbiturates drugs that depress the
activity of the central nervous system, reducing anxiety but impairing memory and judgement
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Psychoactive Drugs
Opiates opium and its derivatives
(morphine and heroin) depress neural activity,
temporarily lessening pain and anxiety
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Psychoactive Drugs
Amphetamines drugs that stimulate neural
activity, causing accelerated body functions and associated energy and mood changes
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Psychoactive Drugs
LSD lysergic acid diethylamide a powerful hallucinogenic drug also
known as acidTHC
the major active ingredient in marijuana
triggers a variety of effects, including mild hallucinations
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Psychoactive Drugs
A Guide to Selected Psychoactive Drugs Drug Type Pleasurable Effects Adverse Effects
Alcohol Depressant Initial high followed by Depression, memory loss, relaxation and disinhibition organ damage, impaired reactions
Heroin Depressant Rush of euphoria, relief Depressed physiology, from pain Agonizing withdrawal
Cocaine Stimulant Rush of euphoria, Cardiovascular stress, confidence, energy suspiciousness, depressive crash
Nicotine Stimulant Arouses and relaxes, sense Heart disease, cancer of well-being (from tars)
Marijuana Mild Enhances sensation, Lowered sex hormones, hallucinogen relieves pain, distorts time, disrupted memory, lung relaxed high damage
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Trends in Drug Use
‘76 ‘78 ‘80 ‘82 ‘84 ‘86 ‘88 ‘90 ‘92 ‘94 ‘960
10
20
30
40
50
60
70
80
Year
Percentage of high schoolseniors reporting use
Alcohol
Marijuana/hashish
Cocaine
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Near Death Experiences
Near Death Experience an altered state of
consciousness reported after a close brush with death
often similar to drug-induced hallucinations