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25 Cards in this Set
- Front
- Back
consciousness
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Our awareness of ourselves and our environment.
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selective attention
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The focusing of conscious awareness on a particular stimulus,as in the cocktail party effect.
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circadian rhythm
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The biological clock; regular bodily rhythms that occur on a 24-hour cycle.
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REM sleep
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Rapid eye movement sleep; a recurring sleep stage during which vivid dreams commonly occur.
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alpha waves
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The raltively slow brain waves of a relaxed, awake state.
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delta waves
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The large, slow brain waves associated with deep sleep.
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insomnia
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A sleep disorder involving recurring problems in falling or staying asleep.
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narcolepsy
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A sleep disorder characterized by uncrontrollable sleep attacks in which the sufferer lapses directly into REM sleep,often at inopportune times.
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sleep apnea
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A sleep disorder characterized by temporary cessations of breathing during sleep and consequent momentary reawakenings.
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night terrors
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A sleep disorder characterized by high arousal and an appearance of being terrified.
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manifest content
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According to Freud,the remembered story line of a dream(as distinct from its latent content)
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latent content
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According to Freud, the underlying but censored meaning of a dream(as distinct from its manifest content).Fred believed that a dream's latent content functions as a safety valve.
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REM rebound
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The tendency for REM sleep to increase following REM sleep deprivation.
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hypnosis
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An apparently heightened suggestibility in which some people narrow their focus of attention and claim to experience imaginary happenings as if they were real.
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dissociation
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A split in consciousness,which allows some thoughts and behaviors to occur simulataneously with others.
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psychoactive drug
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A chemical substance that alters mood and perceptions.
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tolerance
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The diminishing of a drug's effect with regular use of the same dose, requiring the user to take larger and larger doses before experiencing the drug's effect.
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withdrawal
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The discomfort and distress that follow the discontinued use of addictive drugs.
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depressants
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Drugs taht reduce neural activity and slow body functions.
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stimulants
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Drugs that excite neural activity and speed up body functions.
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barbiturates
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drugs that depress the activity of the central nervous system,remducing anxiety but impairing memory and judgment.
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Opiates
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Depresses neural activity, temporarily lessening the painand anxiety.
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amphetamines
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Drugs that stimulate neural activity,causing speeded-up body functions and associated energy and mood changes.
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hallucinations
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False sensory experiences, such as seeing something without any external visual stimulus.
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near-death experience
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An altered state of consciousness reported after a close brush with death;often similar to drug-induced hallucinations.
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