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Myers 9 Chapter 3

Bell West / Consciousness and the Two-Track Mind

consciousness our awareness of ourselves and our environment.
cognitive neuroscience the interdisciplinary study of the brain activity linked with cognition (ijncluding perception, thinking, memory, and language).
dual processing the principle that information is often simultaneously processed on seperate conscious and unconscious tracks.
selective attention the focusing of conscious awareness on a particular stimulus.
inattentional blindness failing to see visible objects when our attention is directed elsewhere.
change blindness failing to notice changes in the environment.
circadian rhythm the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle.
REM sleep rapid eye movement sleep, a recurring sleep stage during which vivid dreams commonly occur. Also known as paradoxial sleep, because the muscles are relaxed (except for minor twitches) but other body systems are active.
alpha waves the relatively slow brain waves of a relaxed, awake state.
sleep periodic, natural, reversible loss of consciousness-as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation.
hallucinations false sensory experiences, such as seeing something in the absence of an external visual stimulus.
delta waves the large, slow brain waves associated with deep sleep
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 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.
dream a sequence of images, emotions, and thoughts passing through a sleeping person's mind. Dreams are notable for their hallucinatory imagery, discontinuities, and incongruities, and for the dreamer's delusional acceptance of the content and later difficultie
manifest content according to Freud, the remembered story line of a dream ( as distinct from its latent, or hidden, content).
REM rebound the tendency for REM sleep to increase following REM sleep deprivation (created by repeated awakening during REM sleep).
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 suggestion a suggestion, made during a hypnosis session, to be carried out after the subject is no longer hypnotized; used by some clinicians to help control undesired symptoms and behaviors.
dissociation a split in consciousness, which allows some thoughts and behaviors to occur simultaneously with others.
psychoactive drug a chemical substance that alters perceptions and moods.
tolerance the diminishing effect with regular use of the same dose of a drug, requiring the user to take larger doses before experiencing the drug's effect.
withdrawal the discomfortand distress that follow discontinuing the use of an addictive drug.
physical dependence a physiological need for a drug, marked by unpleasant withdrawl symptoms when the drug is discontinued.
psychological dependence a psychological need to use a drug, such as to relieve negative emotions.
addiction complusive drug craving and use, despite adverse consequences.
depressants drugs (such as alcohol, barniturates and opiates) that reduce neural activity and slow body functions.
barbiturates drugs that depress the activity of the central nervous system, reducing anxiety but impairing memory and judgment.
opiates opium and its derivatives, such as morphine and heroin; they depress neural activity, temporarily lessening pain and anxiety.
stimulants drugs (such as caffeine, nicotine, and the more powerful amphetamines, cocaine, and Ecstasy) that excite neural activity and speed up body functions.
amphetamines drugs that stimulate neural activity, causing speeded-up body functions and associated energy and mood changes.
metamphetamine a powerfully addictive drug that stimulates the central nervous system, with speeded-up body functions and associated energy and mood changes; over time, appears to reduce baseline dopamine levels.
Ecstasy a synthetic stimulant and mild hallucinogen. Produces euphoria and social intimacy, but with short-term health risks and longer-term harm to serotonin-producing neurons and to mood and cognition.
hallucinogens psychedelic ("mild-manifesting") drugs, such as LSD, that distort perceptions and evoke sensory images in the absence of sensory input.
LSD a powerful hallucinogenic drug; also known as acid (lysergic acid diethylamide).
THC the major active ingredient in marijuana; triggers a variety of effects, including mild hallucinations.
near-death experience an altered state of consciousness reported after a close brush with death (such as through cardiac arrest); often similar to drug-induced hallucinations.
latent content according to Freud, the underlying meaning of a dream (as distinct from its manifest content).
Created by: rkratina