myers’ psychology (5th ed) chapter 7 states of consciousness james a. mccubbin, phd clemson...
TRANSCRIPT
Myers’ PSYCHOLOGY
(5th Ed)
Chapter 7
States of Consciousness
James A. McCubbin, PhDClemson University
Worth Publishers
States of Consciousness
Consciousness our awareness of ourselves and our
environments
Fantasy Prone Personality imagines and recalls experiences
with lifelike vividness spends considerable time fantasizing
Sleep and Dreams
Circadian rhythm the biological clock regular bodily rhythms that occur
on a 24 hour cycle wakefulness body temperature
Sleep and Dreams
REM (Rapid Eye Movement) Sleep recurring sleep stage vivid dreams paradoxical sleep
muscles are generally relaxed, but other body systems are active
Brain Waves and Sleep Stages
Alpha Waves slow waves of a relaxed, awake
brainDelta Waves
large, slow waves of deep sleep Hallucinations
false sensory experiences
Typical Nightly Sleep Stages
0 1 2 3 4 5 6 7
4
3
2
1
Sleepstages
Awake
Hours of sleep
REM
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
Sleep Deprivation
Effects of Sleep Loss fatigue impaired concentration immune suppression irritability slowed performance
accidents• planes• autos and trucks
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
Sleep Disorders
Insomnia persistent problems in falling
or staying asleep
Narcolepsy uncontrollable sleep attacks
Sleep Disorders
Sleep Apnea cessation of breathing often associated with snoring repeatedly awakes sufferer
Night Terrors high arousal- appearance of being
terrified usually in Stage 4, within 2-3 hours of
falling asleep
Night Terrors and Nightmares
Night Terrors occur within 2 or
3 hours of falling asleep
during Stage 4
Nightmares occur toward
morning during REM sleep
0 1 2 3 4 5 6 7
4
3
2
1
Sleepstages
Awake
Hours of sleep
REM
Dreams- FreudSigmund Freud- The Interpretation of
Dreams (1900) wish fulfillment discharge otherwise unacceptable
feelingsManifest Content
remembered story lineLatent Content
underlying, uncensored meaning
Dreams
Information Processing helps consolidate day’s memories stimulates neural development
REM Rebound REM sleep increases following REM
sleep deprivation
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
a relaxed state
HypnosisPosthypnotic Amnesia
supposed inability to recall what one experienced during hypnosis
induced by the hypnotist’s suggestionSuggestibility
related to subject’s openness to suggestion
ability to focus attention inwardly ability to become imaginatively absorbed
Hypnosis
Memory sometimes a relaxed, focused state can
improve recall “hypnotically refreshed” memories are
unreliable false memories or pseudomemories can
be implantedintentionallyunintentionally
Hypnosis
Unhypnotized persons can
also do this
HypnosisOrne & 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
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
Drugs and ConsciousnessPsychoactive Drug
a chemical substance that alters perceptions and alters mood
Physical Dependence physiological need for a drug marked by unpleasant withdrawal
symptomsPsychological Dependence
a psychological need to use a drug for example, to relieve negative emotions
Dependence
Tolerance need for
progressively larger doses to achieve same effect
Withdrawal discomfort and
distress with discontinued use
After repeatedexposure, moredrug is needed to produce same effect
Drug dose
Drug effect
Response tofirst exposure
Psychoactive DrugsDepressants
drugs that reduce neural activity slow body function
alcohol, barbiturates, opiates
Stimulants drugs that excite neural activity speed up body function
caffeine, nicotine, amphetamines
Psychoactive Drugs
Hallucinogens psychedelic (mind-
manifesting) drugs that distort perceptions and evoke sensory images in the absence of sensory inputLSD
Psychoactive DrugsBarbiturates
drugs that depress the activity of the central nervous system, reducing anxiety but impairing memory and judgement
Psychoactive Drugs
Opiates opium and its derivatives
(morphine and heroin) opiates depress neural
activity, temporarily lessening pain and anxiety
Psychoactive Drugs
Amphetamines drugs that stimulate neural
activity, causing accelerated body functions and associated energy and mood changes
Cocaine Euphoria and Crash
Psychoactive Drugs
LSD lysergic acid diethylamide a powerful hallucinogenic drug also known as acid
THC the major active ingredient in
marijuana triggers a variety of effects, including
mild hallucinations
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
Near Death Experiences
Near Death Experience an altered state
of consciousness reported after a close brush with death
often similar to drug-induced hallucinations
Near Death Experiences
Dualism the presumption that mind and body
are two distinct entities that interact
Monism the presumption that mind and body
are different aspects of the same thing