Myers’ Psychology for AP* Unit 5: Consciousness David G. Myers Some PowerPoint Presentation Slides by Kent Korek Germantown High School Worth Publishers, © 2010 *AP is a trademark registered and/or owned by the College Board, which was not involved in the production of, and does not endorse, this product. OBJECTIVES: The student will know and understand the States of Consciousness explores varying stages of awareness, including sleep, reactions to drugs, daydreaming, and controlled conscious processes. After completing their study of this chapter, students should be able to: 1) discuss the nature of consciousness and its significance in the history of psychology 2)contrast conscious and subconscious information processing 3) discuss the content and potential functions of daydreams and fantasies 4) discuss the importance of seasonal, monthly, and daily biological rhythms 5) describe the cyclical nature and possible functions of sleep 6) identify the major sleep disorders 7) discuss the content and possible functions of dreams 8) discuss hypnosis, noting the behavior of hypnotized people and claims regarding its uses 9) discuss the controversy over whether hypnosis is an altered state of consciousness 10) discuss the nature of drug dependence and identify some common misconceptions about addictions 11) describe the physiological and psychological effects of depressants, stimulants, and hallucinogens 12) discuss the factors that contribute to drug use 13) describe the near-death experience and the controversy over whether it provides evidence for a mind-body dualism. Unit 5: States of Consciousness Unit Overview Sleep and Dreams Hypnosis Drugs and Consciousness Consciousness *our awareness of ourselves and our environments *the process by which the brain creates a model of internal and external experience. Introduction States of consciousness Sleep Wake Altered states CORE CONCEPT: Consciousness can take many forms, while other mental processes occur simultaneously outside our awareness. STATES OF CONSCIOUSNESS Some occur spontaneously Some are physiologically induced Daydreaming Hallucinations Some are psychologically Sensory induced deprivation Drowsiness Dreaming Orgasm Food or oxygen starvation Hypnosis Meditation Consciousness is not good at multitasking: So, if you try to drive while talking on the cell phone, you have to shift your attention back and forth between tasks. WHAT DOES CONSCIOUSNESS DO FOR US? *Restricts our attention --limits what you notice and think about *Provides mental “meeting place” where sensation can combine with memory, emotions, motives, and a host of other psychological processes. *Allows us to create a mental model of the world that we can manipulate --using past and present memories to think and plan. The NONCONSCIOUS MIND *Preconscious: defined as memories of events (i.e. a wedding) and facts (i.e. Lansing is the capital of Michigan) that have once been the focus of attention *Unconscious: defined as many levels of processing that occur without awareness, including brain systems and others that can have subtle influences on behavior. Try to fill in the blanks to make a word from the following stem: D E F __ __ __ (write it on a piece of paper) PRIMING: a technique that has an influence on answers people give without their being conscious that they were influenced. There are many possible answers to this question, but I increased the probability that you would chose the word, DEFINE, by using it twice in the previous slide. SLEEP and DREAMS Sleep and Dreams Biological Rhythms periodic physiological fluctuations Circadian Rhythm the biological clock regular bodily rhythms that occur on a 24-hour cycle, such as of wakefulness and body temperature Biological Rhythms and Sleep Circadian Rhythm Circadian rhythm 24 hour cycle Temperature changes Suprachiasmatic nucleus (SCN) melatonin Biological Rhythms and Sleep Circadian Rhythm Biological Rhythms: Premenstrual Syndrome 3 Recalled mood is worse than earlier reported Negative mood score 2 1 Premenstrual Actual Menstrual Intermenstrual Menstrual phase Recalled mood Sleep and Dreams Sleep *periodic, natural, reversible loss of consciousness Daydreaming *mildly, altered state of consciousness *attention inward to memories, expectations, and desires often with vivid mental imagery REM (Rapid Eye Movement) Sleep *recurring sleep stage *vivid dreams “paradoxical sleep” muscles are generally relaxed, but other body systems are active Sleep and Dreams Measuring sleep activity Brain Waves and Sleep Stages Alpha Waves slow waves of a relaxed, awake brain Delta Waves large, slow waves of deep sleep Hallucinations false sensory experiences Brain Waves and Sleep Stages Hypnagogic Sensations Transitional state between wakefulness and sleep Includes lucid dreaming, hallucinations, out of body experiences, and sleep paralysis. Stages in a Typical Night’s Sleep Awake Sleep stages 1 2 3 REM 4 0 1 2 3 4 Hours of sleep 5 6 7 Biological Rhythms and Sleep REM Sleep REM sleep vs NREM sleep REM sleep: rapid eye movement sleep; a recurring sleep state during which vivid dreams commonly occur. Also known as paradoxical sleep, because the muscles are relaxed (except for minor twitches) but other body systems are active. NREM sleep: non-rapid eye movement sleep; encompasses all sleep stages except for REM sleep. Typical nights sleep 90 minute cycle Stages in a Typical Night’s Sleep Minutes of Stage 4 and REM Decreasing Stage 4 25 20 15 Increasing REM 10 5 0 1 2 3 4 5 Hours of sleep 6 7 8 Dreams As Information Processing helps facilitate memories REM Rebound REM sleep increases following REM sleep deprivation Why Do We Sleep? Variations in sleeping patterns Cultural influences Sleep debt Why Do We Sleep? The Effects of Sleep Loss Why Do We Sleep? The Effects of Sleep Loss Why Do We Sleep? The Effects of Sleep Loss Why Do We Sleep? The Effects of Sleep Loss US Navy and NIH studies Age and sleep loss Chronic sleep loss Spring and fall time changes Sleep Deprivation Effects of Sleep Loss fatigue impaired concentration depressed immune system greater vulnerability to accidents Sleep Deprivation Sleep Across the Lifespan Those who sleep longer on average tend to be more nervous, worrisome, artistic, creative and nonconforming. Short sleepers tend to be more energetic and extroverted How much sleep we need depend on several factors: *genetics--different for each species *circadian rhythms *personal characteristics and habits *exercise influences the need for sleep (however, strenuous physical activity increase the amount of slow-wave stage 4 sleep) Older People Sleep Less. Now we know why. (article Huffinton Post, 8/26/2014 by Anna Almendrala) . . . . . .a new study from Beth Israel Deaconess Medical Center and University of Toronto researchers offers, for the first time, a neurological reason for the phenomenon: namely, that a specific cluster of neurons associated with regulating sleep patterns, called the ventrolateral preoptic nucleus, may slowly die off as you get older. "The more of these cells you lose from aging, the harder time you have sleeping," lead researcher Clifford Saper, M.D., Ph.D., chairman of neurology at the Beth Israel Deaconess Medical Center, told HuffPost. Saper noted that by the time people are in their 70s, they’re generally sleeping an hour and a half less than they did when they were in their 20s. "They’re not feeling rested -- they're getting up because they can't sleep anymore, but they're still tired during the day," he said. "It’s sort of a chronic insomnia state." Older People Sleep Less. Now we know why. (article Huffinton Post, 8/26/2014 by Anna Almendrala) CONTINUED . . . . . "The surprise finding was that people with Alzheimer's disease lose these cells particularly quickly," said Saper. "Those were the ones with the very fewest neurons and the most disrupted sleep.” Because people with Alzheimer's disease often end up being institutionalized over the issues that can stem from disrupted sleep (like nighttime wandering), Saper said his Alzheimer's finding may be "key" to figuring out how to keep those patients home with family members. "If we could develop medications that helped Alzheimer's patients sleep through the night, without causing them to have increased risk of falling, this could keep some people out of nursing homes," he said. Why Do We Sleep? Sleep Theories Sleep theories Sleep protects Sleep helps recuperation Memory storage Sleep and creative thinking Sleep and growth DREAMS Dreams: Freud Sigmund Freud--The Interpretation of Dreams (1900) wish fulfillment discharge otherwise unacceptable feelings Manifest Content remembered story line Latent Content underlying meaning Dreams: Freud Dreams *sequence of images, emotions, and thoughts passing through a sleeping person’s mind *hallucinatory imagery *discontinuities *incongruities *delusional acceptance of the content *difficulties remembering Dreams Why We Dream To satisfy our own wishes To file away memories To develop/preserve neural pathways To make sense of neural static To reflect cognitive development Critical Considerations: Critical Considerations: Lacks any scientific support; dreams may be interpreted in many different ways. Critical Considerations: But why do we sometimes dream about things we have not experienced? Critical Considerations: This may be true, but it does not explain why we experience meaningful dreams. Critical Considerations: The individual’s brain is weaving the stories, which still tells us something about the dreamer. Critical Considerations: Does not address the neuroscience of dreams. Dreams vary by Culture, Gender and Age *women everywhere commonly dream of children *men more commonly dream of aggression, weapons, tools *children more likely dream of animals and they are more likely to be large, threatening, and wild *college students dream of small animals, pets and tame creatures *reports from Ghana, dreams feature attacks by cows (Barnouw, 1963) *Americans find themselves embarrassed by public nakedness *Mexican American college students dream of images of death more often than AngloAmerican college students. Dreams tend to reflect life events that are important to the dreamer…..(Rosalind Cartwright research) ACTIVATION-SYNTHESIS THEORY Dreams result when the sleeping brain tries to make sense of its own spontaneous bursts of activity. In this view, dreams originate when their own periodic neural discharges emitted by the brain stem. When the energy sweeps over the cerebral cortex, the sleeper experiences impressions of sensation, memory, motivation, emotion and movement. (Hobson, McCarley 1977) Show What are Dreams (Nova) SLEEP DISORDERS Sleep disorders Insomnia: recurring problems in falling or staying asleep. Narcolepsy: a sleep disorder characterized by uncontrollable sleep attacks. The sufferer may lapse directly into REM sleep, often at inopportune times. Sleep disorders Sleep apnea: a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings. Night terrors: a sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during Stage 4 sleep, within two or three hours of falling asleep, and are seldom remembered. Sleepwalking/sleeptalking Night Terrors and Nightmares Night Terrors occur within 2 or 3 hours of falling asleep, usually during Stage 4 high arousal-appearance of being terrified Sleep stages Awake 1 2 3 REM 4 0 1 2 3 4 5 6 Hours of sleep 7 Nightmares Occur in REM sleep during the early morning hours What interferes with sleep? *Exercise increases endorphins and activity in your system. It is best to exercise in the early morning or late afternoon. *Eating activates the digestive system. It is best to eat prior to 6 or 7:00 pm. *Alcohol depresses activity in the brain that control our self-monitoring behaviors. While it will initially induce relaxation, overuse will interfere with REM sleep and cause insomnia and infrequent sleep patterns. HYPNOSIS Introduction Hypnosis Hypnotic induction Hypnosis as an altered state? 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 Posthypnotic Amnesia supposed inability to recall what one experienced during hypnosis induced by the hypnotist’s suggestion Hypnosis Orne & Evans (1965) control group instructed to “pretend” unhypnotized subjects performed the same acts as the hypnotized ones Posthypnotic Suggestion suggestion to be carried out after the subject is no longer hypnotized used by some clinicians to control undesired symptoms and behaviors Hypnosis Unhypnotized persons can also do this Facts and Falsehoods Can Anyone Experience Hypnosis? Postural sway Susceptibility Can Hypnosis Enhance Recall of Forgotten Events? Age regression Facts and Falsehoods Can Hypnosis Force People to Act Against Their Will? Can Hypnosis Be Therapeutic? Hypnotherapists Posthypnotic suggestion Can Hypnosis Alleviate Pain? Explaining Hypnosis Hypnosis Dissociation a split in consciousness allows some thoughts and behaviors to occur simultaneously with others Hidden Observer Hilgard’s term describing a hypnotized subject’s awareness of experiences, such as pain, that go unreported during hypnosis Uses of hypnosis: *Research--can induce temporary mental conditions (anxiety, hallucinations, depression) *Treatment--phobias, eliminating unwanted behaviors (smoking, eating) *Anesthesia--medical & dental practices (not everyone can do this) How does hypnosis relieve pain? Two theories: *Hilgard’s hidden-observer explanation: Ostensibly, a person undergoing hypnosis to manage pain, for example, feels no conscious pain. That does not mean the pain is not there, however; nor does it mean that the patient's subconscious is not registering the pain. When their "hidden observers" were tapped into, however there were reports of pain and discomfort *Gate-Control Theory-- pain depends on the relative amount of traffic in two different sensory pathways which carry information from the sense organs to the brain. Traumatic pain travels the slower-paced nerve paths. DRUGS and CONSCIOUSNESS Drugs and Consciousness Psychoactive Drug a chemical substance that alters perceptions and mood Physical Dependence 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 Dependence and Addiction Big effect Tolerance Response to first exposure Drug effect diminishing effect with regular use Withdrawal After repeated exposure, more drug is needed to produce same effect Little effect Large Small Drug dose discomfort and distress that follow discontinued use Dependence and Addiction Dependence Physical dependence: a physiological need for a drug, marked by unpleasant withdrawal symptoms when the drug is discontinued. Psychological dependence: a psychological need to use a drug, such as to relieve negative emotions. Psychoactive Drugs Three types of psychoactive drugs Depressants Stimulants Hallucinogens Psychoactive Drugs Depressants Depressants *drugs that reduce neural activity, inhibits the transmission of messages in CNS *slow body functions alcohol, barbiturates, opiates, benzodiazepines Psychoactive Drugs Depressants - Alcohol Disinhibition Slowed neural processing Memory disruption Reduced self-awareness and selfcontrol Expectancy effects Alcohol + Sex = The Perfect Storm Psychoactive Drugs Barbiturates drugs that depress the activity of the CNS, reducing anxiety but impairing memory and judgement Side effect of reducing REM sleep time; withdrawal from barbituates results in REM rebound and unpleasant dreams Sedatives, sleep, anesthetic, anticonvulsant Opiates opium and its derivatives (morphine and heroin) opiates depress neural activity, temporarily lessening pain and anxiety Similar to body’s pain relieving chemicals, the endorphines Opium, morphine, heroin, codeine, methadone Psychoactive Drugs Stimulants Stimulants *drugs that excite neural activity in CNS *Dangers include frightening hallucinations, paranoid delusions; children born to users at at increased risk for cognitive problems, emotional difficulties and behavior-control disorders. *speed up body functions, increase concentration, reduce behavior in ADHD. caffeine, nicotine, amphetamines, cocaine, methamphetamine, MDMA (ecstacy), Psychoactive Drugs Amphetamines drugs that stimulate neural activity, causing speeded-up body functions and associated energy and mood changes Weight control, counteract anesthesia Methamphetamines Speed (crystal meth) Weight control 5Addicted brain [clipnabber.com].mp4 5Drugs Make You Ugly [clipnabber.com].mp4 Psychoactive Drugs Stimulants - Nicotine Psychoactive Drugs Stimulants - Cocaine Psychoactive Drugs Stimulants - Cocaine Psychoactive Drugs Hallucinogens psychedelic (mind-manifesting) drugs that distort perceptions and evoke sensory images in the absence of sensory input Most hallucinogens work at the receptor sites for the neurotransmitter serotonin LSD, mescaline, psilocybin, PCP, cannabis Psychoactive Drugs Ecstasy (MDMA) synthetic stimulant and mild hallucinogen both short-term and long-term health risks 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 Psychoactive Drugs Influences of Drug Use Biological Influences Psychological and Social-Cultural Influences Perceived Marijuana Risk 100% Percent of twelfth graders Perceived “great risk of harm” in marijuana use 90 80 70 60 50 40 Used marijuana 30 20 10 0 ‘75 ‘77 ‘79 ‘81 ‘83 ‘85 ‘87 ‘89 ‘91 ‘93 Year ‘95 ‘97 ‘99 Levels of Analysis for Drug Use GO TO http://learn.genetics.utah.edu/content/addiction/mouse/ http://learn.genetics.utah.edu/content/addiction/methmouse// NEAR-DEATH EXPERIENCES 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 QUESTIONS FOR REVIEW 1) RECALL Who objected most strenuously to defining psychology as the science of consciousness? a) The behaviorists b) The cognitive psychologists c) The Freudians d) The humanists e) The neurologists 2) RECALL According to cognitive neuroscience a) Consciousness has no relationship to the brain b) Consciousness is a product of the brain c) Creativity arises from altered states of consciousness d) Consciousness does not exist e) The conscious mind has little access to the larger world of mental activity in the unconscious 3) APPLICATION Suppose you wanted to sample the contents of preconsciousness in a group of volunteers. Which technique would be most appropriate? a) Ask them to recall specific memories to consciousness b) Ask them to recall a dream c) Do a priming experiment d) Have them undergo psychoanalysis e) Give them MRI scan 4) UNDERSTANDING THE CORE CONCEPT Which of the following is a description of consciousness suggested by the core concept for this section? a) Consciousness processes information serially b) Consciousness allows us to respond reflexively, without thinking. c) Consciousness controls our autonomic nervous system d) Consciousness makes us more alert e) Consciousness is just an abstract concept. 5) RECALL Which statement is true about daydreaming? a) Daydreams help focus your attention b) Most people daydream every day c) Daydreams are usually more vivid than night dreams d) Daydreams usually serve as an escape from the concerns of real life e) Most people can easily suppress unwanted thoughts 6) RECALL All of the following are related to our circadian rhythms, except a) Daydreaming b) Waking c) Dreaming d) Sleep e) Jet lag 7) RECALL Suppose that you are working in a sleep laboratory, where you are monitoring a subject’s sleep recording during the night. As the night progresses, you would expect to see that a) Dreaming becomes less frequent b) The four-stage cycle gradually lengthens c) Stage 3 and 4 sleep periods lengthen d) REM periods become longer e) Stage 1 keeps reappearing 8) RECALL According to the activation-synthesis theory, dreams are a) Replays of events during the previous day b) Wish fulfillments c) Mental garbage d) Storylike episodes that provide clues about problems in the unconscious mind e) An attempt by the brain to make sense of random activity in the brain stem. 9) APPLICATION Which of the following symptoms suggests the presence of a sleep disorder? a) Needing nine hours of sleep each night in order to feel rested b) Napping during the day c) Not remembering your dreams d) A REM period at the beginning of sleep e) A brief cessation of breathing once or twice a night 10) UNDERSTANDING THE CORE CONCEPT Our core concept states that consciousness changes in cycles that normally correspond to our biological rhythms and to the patterns of our environment. Which of the following illustrates this concept? a) The Crick-Mitchison view b) Priming c) Consciousness, preconsciousness, and the unconscious d) Sleep and dreaming e) REM rebound 11) RECALL Hypnosis is sometimes used by psychological researchers to a) Cure patients suffering from severe mental disorder b) Improve memory c) Create mental states, such as anxiety or euphoria d) Student the effects of psychoactive drugs e) Induce amnesia for traumatic experiences. 12) RECALL Psychoactive drugs usually create their effects by ____ in the brain a) Causing delayed stress reactions b) Stimulating reward circuits c) Rewiring neural pathways d) Disabling dendrites e) Altering memories 13) RECALL Which of the following statements is true? a) Research has proven conclusively that addiction is a brain disease b) The reinforcing nature of drugs ensures low addiction rates. c) Some psychologists suggest that treating addiction as a disease ignores the social and economic factors that surround the problem d) The cycle of addiction is most efficiently broken with a combination of punishment for relapses and drugs that counteract the effects of psychoactive drugs. e) Most public health professionals view addiction as a character weakness. 14) APPLICATION Which of the following groups of drugs have the opposite effects on the brain? a) Stimulants and depressants b) Depressants and opiates c) Hallucinations and sedatives d) Opiates and sedatives e) Hallucinogens and stimulants. 15) UNDERSTANDING THE CORE CONCEPT An altered state of consciousness occurs when some aspect of normal consciousness is modified either by mental, behavioral, or chemical means. This suggests that a) Some states of consciousness are mystical phenomena that cannot ever be explained b) Altered states of consciousness are the primary source of creativity in our minds c) Consciousness is immutable d) All states of consciousness are controlled by unconscious needs, desires and memories e) Psychologists can study altered states of consciousness with scientific methods. 16) APPLICATION What was the objection by Watson and other behaviorists to the study of consciousness? a) Consciousness is the result of an inner life force, which they did not have the tools to study b) Consciousness is an essential component of learning c) Consciousness could not be accessed by introspection d) Consciousness is not affected by rewards and punishments. e) Conscious processess cannot be directly observed and measured. 17) RECALL Imaging techniques, such as MRI and PET scans, allow cognitive scientists to connect mental activity with a) Cognition b) Behavior c) Learning d) Brain activity e) Priming 18) RECALL Which of the following is not one of the functions of consciousness cited by your text? a) Manipulating a mental image of the world b) Relinquishing control to enhance self-awareness c) Combining sensation with memory d) Selecting pertinent information for further processing e) Restricting attention to what is relevant 19) RECALL Which one of the following did Freud believe to be a function of the unconscious mind? a) Regulation of sleep, wakefulness, blood pressure, heart rate, body temperature and habit patterns b) The construction of grammatically correct sentences, without having to think consciously about the grammatical rules c) Logical thinking d) The unconscious mind serves no purpose e) Protecting consciousness from sexual desires and traumatic experiences. 20) RECALL Rapid Eye movements are reliable behavioral signs that a) A person is very low in hypnotizability b) A sleeper is dreaming c) One has achieved a genuine meditative state d) An individual has reached the deepest level of sleep e) An individual is under the influence of alcohol or other drugs 21) RECALL Which one of the following is a sleep disorder characterized by brief interruptions when the sleeper stops breathing, wakens, resumes breathing, and falls back asleep? a) Analgesia b) Night terrors c) Apnea d) Daytime sleepiness e) Insomnia 22) RECALL Which of the following statements about hypnosis is true? a) Anyone can be hypnotized if the hypnotists know the most effective techniques to use b) Hypnosis has no medical value c) Hypnotizability relies on a person’s ability to respond to suggestion d) Hypnosis is actually a form of NREM sleep e) The less intelligent of educated a person is, the more hypnotizable he or she will be 23) RECALL Psychology has verified that meditation can be useful for producing a) Heightened cognitive arousal b) A deeper understanding of oneself c) Enlightenment d) Increased metabolic rates e) A state of relaxation 24) RECALL Which of the following drugs would be most likely to produce hallucinations (sensory experiences with no basis in reality)? a) Benzodiazepines b) Mescaline c) Amphetamines d) Alcohol e) Nicotine 25) RECALL Three major effects sought by users of _____ are increased alertness, greater self-confidence, and euphoria. a) Barbituates b) Stimulants c) Depressants d) Opiates e) Hallucinogens Show Zimbardo #13 The Mind Awake and Asleep Zimbardo #14 The Mind Hidden and Divided Zimbardo #24, Applying Psych in Life The Meth Epidemic (PBS) Also The Mind, #2, #22, #29, #30