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PSYCH: CH 5 - Variations in Consciousness Flashcards

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1758164879Consciousnessawareness of ext and int stimuli0
1758164880nature of consciousness (4)1. awareness of ext. events 2. awareness of int. sensations 3. awareness of yourself and exp. 4. awareness of thoughts about exp.1
1758164883consciousness result of activity indistributed networks of neural pathways; does not arise from any distinct structure in brain2
1758164884most commonly used indicator of variations of consciousnessEEG (electroencephalograph)3
1758164885EEGdevice that monitors electrical activity of brain over time by means of recording electrodes attached to surface of scalp4
1758164886EEG essentially summarizesrhythms of cortical brain activity in terms of line tracings (brain waves)5
1758164888four types of brain wavesbeta, alpha, theta, and delta6
1758164889beta waves(13-24 cps) normal waking, alert problem solving7
1758164890alpha waves(8-12 cps) meditation and deep relaxation, blank mind8
1758164891theta waves(4-7 cps) light sleep indicator9
1758164892delta waves(<4 cps) deep sleep indicator10
1758164893variations in consciousness shaped in part bybiological rhythms11
1758164894biological rhythmsperiodic fluctuations in physiological functioning12
1758164895significance of biological rhythmsorganisms have internal "biological clocks" that monitor the passage of time13
1758164896circadian rhythm24 hr biological cycles found in humans and other species14
1758164897what are circadian rhythms particularly influential over?sleep regulation, physical functions, and cognitive performances15
1758164898relationship between sleep and temperature^ temperature = awake, vice versa16
1761557363in short, consciousness ispersonal awareness that cont. changing and shifting17
1761557364james recognizedconsciousness fluctuates cont.18
1761557365james namedstream of consciousness19
1761557366freud discoveredfeelings and behavior influenced by unconscious needs, wishes, and conflicts20
1761557367freud said that stream of consciousness hasdepth; not an all-or-none phenomenon21
1761557368freud said that conscious and unconscious process havediff. "levels of awareness"22
1761557369research of why ppl maintain awareness during sleepselective sensitivity of some stimuli remain aware of external events23
1761557370EEG records activity fromswaths of cortex24
1761557371brain waves vary withamplitude and frequency25
1761557372each individual may have "ideal" timefor sleep26
1761557373how day-night cycle resets human biological clockslight > retina receptors > input > hypothalamus [suprachiasmatic nucleus (SCN)] > pineal glands > melatonin hormone27
1761557374ignoring circadian rhythms examplesjet lag (easier to fly W; takes 2/3 of day for readjustment) and shift rotation (most detrimental; prone to accidents and health risk)28
1761557375realigning rhythms (2)1. hormone melatonin (does crucial) 2. reduce severity of circadian disruption OR longer periods between shifts29
1761557376past theory on sleep and waking cyclesleep is single, uniform state of physical and mental inactivity; brain "shuts down"30
1761557377present theory on sleep and waking cyclesleep includes physical and mental activities; landmark discovery of REM sleep (1950s)31
1761557378EMG electromyographmuscular activity and tension32
1761557379EOG electrooculographeye movement33
1761557380EKG electrocardiographcontraction of heart34
1761557381other instruments of sleep-recording devicesbreathing, pulse rates, and body temperature35
1761557382onset of sleep isgradual36
1761557383no obvious transition points betweenwakefulness and sleep37
1761557384stages (1-4) average time to fall asleep25 min38
1761557385non-REM sleepabsence of rapid eye movement; little dreaming; varied EEG activity39
1761557386stage (1)brief transitional stage of light sleep (10-12 min)40
1761557387stage (1) physical symptomsdecrease in breathing, heart rate, muscle tension, and body temperature41
1761557388prominent waves in stage (1)transition from alpha > theta waves (small, irregular waves - lower EEG activity)42
1761557389stages (2,3,4) physical symptomsdecrease respiration, heart, muscle tension, and body temperature43
1761557390brain waves trend in stages (2,3,4)gradually become higher amplitude and slower in frequency44
1761557391stages (3,4) characterized asslow-wave sleep45
1761557392slow wave sleep EEG recordinglow frequency delta waves become prominent(30 min)46
1761557393stage (5)REM sleep47
1761557394REM sleep coined byWilliam DEment48
1761557395REM sleep characteristicsirregular breathing and pulse rate; muscle tone relaxed; dreaming most frequent, vivid, and memorable49
1761557396"deep" stage of sleepREM sleep50
1761557397REM EEG recordingshigh frequency beta waves - resembling awake stage51
1761557398repetition of cycle: 1st REM periodshort, few min52
1761557399repetition of cycle: REM and non-REM period over timegets progressively longer; shorten and shallow53
1761557400most slow-wave sleep occurearly in cycle (15-20%)54
1761557401REM pilessecond 1/2 of cycle (20-25%)55
1761557402newborns sleep cycle6-8 times a day; most REM: 50% 1st month; 30% 1st year56
1761557403elders sleep cycle% decrease in slow wave; % increase in stage (1); average amount of sleep decrease57
1761557404reasons why elders have less sleep (2)1. increase frequency of nighttime awakenings 2. adults less sleep during day b/c tolerant of sleep deprivation58
1761557405culture diff. with NO enjoyment of night's sleep: whites, blacks, hispanics, and asians20, 18, 14, 959
1761557406lower income and education equivocatemore sleep complaints60
1761557407siesta cultures1-2 hr napping period because hottest duration of day61
1761557408industrialized society emphasize productivity and philosophy that"time is money" therefore less sleep for individuals62
1761557409partial sleep deprivation also calledsleep restriction63
1761557410americans no longer know what it feels like tobe fully alert (Dement)64
1761557411sleep restriction leads toimpaired attention, reaction time, motor coordination, decision making, function of endocrine and immune system65
1761557412selective deprivation results in"rebound effect:" spontaneous shift in sleep for more REM sleep66
1761557413results of selective deprivation suggestsppl need specific needs for REM and slow-wave sleep67
1761557414theories of importance of sleep (3)1. firm up learning 2. neurogenesis 3. creative performance68
1761557415health effects of sleep restrictionincrease hunger, obsesity impaired immune functioning69
1761557416health effects of prolonged sleepdepression70
1761557417sleep studies depend on participant'sself report estimates; therefore, inaccuracy factor71
1761557418insomniachronic problems getting adequate sleep72
1761557419insomnia conditions (3)1. difficulty sleeping 2. difficulty falling asleep 3. early-morning awakening73
1761557420nearly every one suffers insominia b/cstress, disrupted biological rhythms74
1761557421insomnia increases withage75
1761557422insomnia is 50% common infemale76
1761557423chronic insomnia % of population30-35%77
1761557424severe insomnia % of population50-75%78
1761557425drug solutions to insomnia (2)1. benzodiazepine (relieve anxiety) 2. nonbenzodiazepine sedatives79
1761557426insomnia drugs are poor long-range solutions becauseoverdose, increase dependency, tolerance, withdrawal symptoms, and increase insomnia severity80
1761557427narcolepsysudden, irresistible onsets of sleep during normal waking periods81
1761557428REM period in narcolepsy10-20 min82
1761557429% of population that has narcolepsy0.05%83
1762825353sleep apneagasping air that awakens and disrupts sleep84
1762825354sleep apnea occurs greater withelders, obese, postmenopausal female85
1762825355most serious effects of sleep apneastroke, hypertension, and coronary disease86
1762825356treatment for sleep apnealifestyle modifications (drug therapy, special masks87
1762825357somnambulismalso known as sleepwalking88
1762825358% of somnambulism in children and adults15%, 3%89
1762825359somnambulism occurs during firstthree hours of SWS90
1762825360Dreams to Western Societiesunimportant91
1762825361Dreams to Non-Western Societieschange the world; have dramatic influence on all aspects of culture and history92
1762825362calvin hall: the content of most dreams aremundane (familiar cast of characters)93
1762825363popular dream themessex, aggression, and misfortune94
1762825364what's the threat of dreams?it can be negative and potentially traumatic, especially self-centered95
1762825365Freud: content of dreamscontents of waking life tend to spill into dreams (day residue)96
1762825366Dement: content of dreamsdreams affected by external stimuli (ie: water spurts)97
1762825367Theories of DreamsFreud, Cartwright, and Hobson98
1762825368Freud Theory of DreamWish-fulfillment99
1762825369Wish-fulfillment theoryppl fulfill unmet needs from waking hours through wishful thinking in dreams100
1762825370Why wish-fulfillment theory may not be obviousmay not be obvious b/c unconscious attempts to censor and disguise true meaning of dreams101
1762825371Was Freud's dream theory accepted?It was popular, not scientifically supported though102
1762825372Cartwright Theory of DreamProblem-Solving view103
1762825373Problem-Solving View theoryconsiderable continuity between waking and sleeping because dreams allow ppl to engage in creative thinking about problems not restrained by logic of realism104
1762825374Was Cartwright's dream theory accepted?Credibility increased when research on REM sleep showed enhancement of learning105
1762825375Hobson Theory of DreamActivation-Synthesis model106
1762825376Activation-Synthesis modeldreams side effects of neural activiation that produces beta brain waves during REM sleep that associate with wakefulness107
1762825377Pathway of Activation-Synthesis modelneurons fire periodically in lower brain centers > send random signals to cortex > cortex synthesizes dream to make sense of signal108
1762825378what does Hobson's theory downplaythe role of emotional factors as determinants of dreams109
1762825379Franz Anton Mesmerclaimed to cure ppl's illnesses through "laying on hands" and "animal magnetism;" he inspired "mesmerism" followers110
1762825380James Braidpopularized hypnotism (1843)111
1762825381Braid thought hypnotism can be used foranesthesia; but chemical anesthetics took over as general practice112
1762825382hypnotism dual existence (2)1. clinical tool as treatment of psychological and physical ailments 2. assortment of entertainers and quacks113
1762825383hypnosissystematic procedure that produced heightened state of suggestibility; also leads to passive relaxation, narrowed attention, and enhanced fantasy114
1762825384popular hypnotic inductionswinging pendulum, hypnotists suggests subject is relaxing or feeling drowsy115
1762825385% ppl that don't respond to hypnosis10-20116
1762825386% ppl that are exceptional responders to hypnosis10-15117
1762825387prominent hypnotic phenomena (4)1. anesthesia 2. sensory distortions and hallucinations 3. disinhibition 4. post-hypnotic suggestions and amnesia118
1762825388anesthesia hypnotic phenomenatreatment of acute and chronic pain119
1762825389sensory distortions and hallucinations hypnotic phenomenareduce inhibitions that would normally prevent subjects from acting weird120
1762825390why does disinhibition occurbecause hypnotized ppl feel that they cannot be held responsible for actions taken while hypnotized121
1762825391post hypnotic suggestions and amnesia hypnotic phenomenasuggestions made during hypnosis may influence participant's later behavior122
1762825392theories of hypnosis (2)1. patients place in special, altered state of consciousness (hypnotic trance) 2. role playing123
1762825393no reliable studies suggest alterations in brain activity (theory 1); therefore:hypnosis is normal state of consciousness characterized by dramatic role playing124
1762825394role playing theory evidence (2)1. affects of hypnosis duplicated by non-hypnotized ppl, suggesting no special state of consciousness 2. hypnotized participants act out role; inaccurate and invented memories are in highly cooperated manners125
1762825395altered state of conscious theory evidence (2)1. cooperative subjects unlikely to endure surgery without anesthetic to please physicians and live up to expected role 2. hypnotized participants cont. to display hypnotic responses when they thought they were alone and unobserved126
1762825396mots influential explanation of hypnosis as alt. stateErnest Hilgard: dissociation127
1762825397dissociationsplitting of mental processes into two separate, simultaneous streams of awareness128
1762825398two streams from dissociationone: communication with hypnotized ext. world two: difficult-to-detect "hidden observer"129
1763097501meditationfamily of practices that train attention to heighten awareness and bring mental processes under greater voluntary control130
1763097502NA most widely practices meditation associated with - from - religionsyoga, zen, and TM Hinduism, zen Buddhism, and Taoism131
1763097503mindfulness meditationopen monitoring from zen buddhism132
1763097504types of approach to meditation (2)1. focused attention 2. open monitoring133
1763097505focused attention meditationconcentrates on specific objects, images, sounds, or bodily sensations134
1763097506open monitoring meditationattention is directed to contents of one's moment-to-moment experience in a nonjudgmental and nonreactive way135
1763097507intent on expanding attentionbecome detached observer of the flow of one's own sensations, thoughts, and feelings136
1763097508what waves are dominant in the meditative statealpha and theta137
1763097509meditative state leads to potentially benefiticalphysiological states characterized by suppression of bodily arousal138
1763097510debate on meditationwhether there are physiological changes associated with meditation that are unique to special state of consciousness139
1763097511psychoactive drugschemical substances that modify mental, emotional, or behavioral functioning; recreational use140
1763097512types of drugs (6)narcotics, suppressants, stimulants, hallucinogens, cannabis, and alcohol141
1763097513narcoticscapable of relieving pain142
1763097514sedativessleep inducing drugs that decrease CN activation and behavioral activity143
1763097515stimulantsincrease CN activation and behavioral activity144
1763097516hallucinogensdiverse group of drugs that wave powerful effects on mental and emotional functioning, marked most notably by distortions in sensory and perceptual experience145
1763097517cannabishemp plant derives marijuana, hashish, and THC146
1763097518alcoholbeverage with ethyl alcohol147
1763097519mechanism of drugsneurotransmitters are excessively uptake by synaptic clefts148
1763097520theory of neural pathway affected by all drugsreward pathway; mesolimbic doppamine pathway149
1763097521reward pathwayneural circuit from midbrain > nucleus accumbens > prefrontal cortex150

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