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psyc Key Terms ch 4 - Key Terms activation-information-mode...

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Key Terms activation-information-mode model (AIM) revised version of the activation-synthesis explanation of dreams in which information that is accessed during waking hours can have an influence on the synthesis of dreams. activation-synthesis hypothesis explanation that states that dreams are created by the higher centers of the cortex to explain the activation by the brain stem of cortical cells during REM sleep periods. adaptive theory theory of sleep proposing that animals and humans evolved sleep patterns to avoid predators by sleeping when predators are most active. alcohol the chemical resulting from fermentation or distillation of various kinds of vegetable matter. alpha waves brain waves that indicate a state of relaxation or light sleep. altered state of consciousness state in which there is a shift in the quality or pattern of mental activity as compared to waking consciousness. amphetamines stimulants that are synthesized (made) in laboratories rather than being found in nature. barbiturates depressant drugs that have a sedative effect. benzodiazepines drugs that lower anxiety and reduce stress. caffeine a mild stimulant found in coffee, tea, and several other plant-based substances.
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