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Module 4.1States of Consciousness� Consciousness: a stream of thoughts; our awareness of ourselves and our environments� Focused awareness� Drifting consciousness� Daydreaming� Divided consciousness� Automatic pilotStates of Unconsciousness� States in which we are relatively unaware of our external surroundings� Examples� Head trauma� General anesthesia� Coma� Altered states of consciousness� Daydreaming, meditation, hypnosis, drugsModule 4.2Sleeping and DreamingCircadian Rhythms and Sleep� Difficulties with circadian rhythm� Jet lag� Shift workSLEEP: Why do we sleep?SLEEP:� periodic, natural, reversible loss of consciousness� Repair and restoration theory� Evolutionary Theory a) Energy conservation version b) Predatory avoidance versionMEASURING SLEEPBrain Wave Patterns (Figure 4.1)Stages of Sleep� Stages 1 to 4� Stage 1: small irregular brain waves, light sleep� Stage 2: sleep spindles� Stages 3 & 4: delta or slow-wave sleep, deep sleep� REM sleep� Rapid eye movements occur� Full dreams occur� Paradoxical sleepSleep time for humans as a� function of ageDreams and Dreaming� Why do we dream?� Consolidate memories and learning� Problem solving� Activation-synthesis hypothesis� Wish fulfillment (Sigmund Freud)� Manifest and latent content� Symbolic nature of dreamsSleep Deprivation� Impact of sleep deprivation� Slowed reaction times� Impaired concentration, memory, problem solving� Difficulty learning new information� Impaired academic performance� Accidents� Weakened immune systemSleep Disorders� Insomnia� Hypersomnia� Narcolepsy: �sleep attacks�� Sleep apnea� Nightmare disorder� Sleep terror disorder� Sleepwalking disorder� Sleep talking� Periodic Limb Movement Disorder (Myoclonic Jerks)Module 4.3Altering Consciousness Through Meditation and HypnosisMeditation� Focused attention inducing a relaxed, contemplative state� May focus on single object or idea� Mantra: repeating phrase or sound� Practice varies between cultures� Varied goals� Relax body and mind� Expand consciousness, awareness, peacefulnessHypnosis� 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.� Altered state of consciousness with:� Focused attention� Deep relaxation� Suggestibility� Varied techniques, such as:� Focus on hypnotist�s voice� Focus on object� SuggestionsHypnosis� Hypnotic suggestion� Age regression� Analgesia� Distortions of reality (positive and negative hallucinations)� Posthypnotic amnesia� Posthypnotic suggestionTheories of Hypnosis� Trance state characterized by suggestibility� Role-playing model� Neodissociation theory (Hilgard)� Dissociated consciousness:� 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.� Cold pressor test.Competing views of hypnosisHypnosis and Personality� Characteristics of highly hypnotizable people� Well-developed fantasy life� Vivid sense of imagination� Forgetfulness� Positive attitude toward hypnosisModule 4.4Altering Consciousness Through DrugsPsychoactive Drugs� Act on brain to affect emotional or mental states� Examples� Heroin, cocaine, marijuana� Alcohol, nicotine, caffeineConcepts of Drug Use� Psychoactive Drug� a chemical substance that alters perceptions and alters 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 emotionsDependenceClasses of Psychoactive Drugs� Depressants� drugs that reduce neural activity� slow body function� alcohol, barbiturates, opiates� Stimulants� drugs that excite neural activity� speed up body function� caffeine, nicotine, amphetamines� Hallucinogens� psychedelic (mind-manifesting) drugs that distort perceptions and evoke sensory images in the absence of sensory input� LSDDepressants� Alcohol: disinhibiting intoxicant� Most widely used and abused depressant� Disturbs balance and motor skills, slurred speech, impairs judgment, concentration, and attention� Accounts for 100,000 deaths per year in US� Alcoholism� Binge drinkingDepressants� Barbiturates� Calming or sedating effects� Drowsiness, slurred speech, impairment� Examples: Amobarbital, pentobarbital, phenobarbital� Tranquilizers� Treat anxiety, insomnia� Reduce arousal, induce calm feelings� Examples: Valium, Xanax, HalcionDepressants� Opioids� Narcotics: addictive, pain-relieving, sleep-inducing� Produce euphoric �rush,� dampen awareness� Examples� Derivatives of poppy: morphine, heroin, codeine� Synthetics: Demerol, Percodan, Darvon� Legitimate medical uses� Popular illicit street drugsStimulants� Heighten activity of CNS� Types� Amphetamines� Cocaine� MDMA (Ecstasy)� Nicotine� CaffeineHallucinogens� Alter perceptions, distortions, hallucinations� Types� LSD� Mescaline, psilocybin, and PCP� MarijuanaDrug Abuse� Social and cultural factors� Genetic factors� Neurotransmitters, biochemistry, endorphins� Psychological factors� Cognitive factorsDrug abuse across culturesDrug Treatment� Most effective treatment: use a wide variety of approaches� Detoxification� Follow-up services, counseling� Therapeutic drugs� Self-help programsModule 4.5Application: Getting Your Z�sInsomnia� Common sleep problem� Difficulty getting enough sleep� May reflect underlying psychological or physiological disorder� Often reflects unhealthy sleep habitsHealthy Sleep Habits� Regular sleep schedule� Don�t try to force sleep� Regular bedtime routine� Proper cues for sleeping� Avoid tossing and turning� Avoid daytime naps� Don�t take problems to bed� Use mental imagery� Regular exercise� Limit caffeine� Rational �self-talk�What drugs distort perceptions and evoke sensory images?Hallucinogens are psychedelic (mind- manifesting) drugs that distort perceptions and evoke sensory images in the absence of sensory input.
Are a category of drugs that distort perceptions and evoke sensory images in the absence of sensory input?Hallucinogens are psychedelic (mind-manifesting) drugs that distort perceptions and evoke sensory images in the absence of sensory input.
Which of the following would produce sensory images in the absence of sensory input?Psychedelic (mind manifesting) drugs, such as LSD, that distort perceptions & evoke sensory images in the absence of sensory input.
Which type of drug is best known for altering a person's sense of perception?Psychedelics (also known as hallucinogens) are a class of psychoactive substances that produce changes in perception, mood and cognitive processes. Psychedelics affect all the senses, altering a person's thinking, sense of time and emotions.
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