| amphetamine psychosis | (s?¯-ko¯´sis) A prolonged reaction to the excessive use of stimulants, characterized by disordered thinking, confused and rapidly changing emotions, and intense suspiciousness.
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| amphetamines | (am-fet´ah-minz) Powerful stimulants that produce a conscious sense of increased energy and a euphoric high.
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| consciousness | (kon´shus-nes) A state of awareness.
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| day residue | Dream content that is similar to events in the person's waking life.
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| daydreams | Relatively focused thinking about fantasies.
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| depressants | Drugs that reduce the activity of the central nervous system, leading to a sense of relaxation, drowsiness, and lowered inhibitions.
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| divided consciousness | The splitting off of two conscious activities that occur simultaneously.
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| electroencephalogram (EEG) | (e-lek´´tro¯-en-sef´ah-lo-gram) A measure of electrical brain activity.
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| hallucinogens | (hah-lu¯´si´´no-jenz) Drugs that alter perceptual experiences.
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| hypnagogic state | (hip´´nah-goj´ik) A relaxed state of dreamlike awareness between wakefulness and sleep.
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| hypnosis | (hip-no¯´sis) An altered state of consciousness in which the individual is highly relaxed and susceptible to suggestions.
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| inhalants | (in-ha¯´lants) Toxic substances that produce a sense of intoxication when inhaled.
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| latent content | According to Freud, the true meaning of dreams that is found in the symbols in their manifest content.
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| manifest content | According to Freud, the obvious, but superficial, meaning of dreams.
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| myoclonia | (mi´´o-klo¯´ne¯-ah) An abrupt movement that sometimes occurs during the hypnagogic state in which the sleeper often experiences a sense of falling.
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| narcotics | Powerful and highly addictive depressants.
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| opiates | (o¯´pe¯-ats) Narcotic drugs derived from the opium poppy.
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| psychotropic drugs | (s?¯´´ko-tro¯p´pik) The class of drugs that alters conscious experience.
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| REM sleep | Rapid-eye-movement sleep, characterized by movement of the eyes under the lids; often accompanies dreams.
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| sedatives | Depressants that in mild doses produce a state of calm relaxation.
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| stimulants | Drugs that increase the activity of motivational centers and decrease activity of inhibitory centers in the central nervous system, providing a sense of energy and well-being.
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| stimulus incorporation | Stimuli that occur during sleep that are incorporated into dreams either directly or in altered form.
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| unconscious mind | Mental processes that occur without conscious awareness.
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2002 McGraw-Hill Higher Education