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14 Cards in this Set

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  • Back
Psychoactive drug
a chemical substance that alters moods and perceptions
Tolerance
the diminsihing effect with regular use of the same dose of a drug, requiring the user to take larger and larger doses before experiencing the drug's effect
Withdrawal
the discomfort and distress that follow discontinuing the use of an addictive drug
Physical dependence
a physiological need for a drug, marked by unpleasant withdrawal symptoms when the drug is discontinued
Psychological dependence
a psychological need to use a drug, such as to relieve negative emotions
Barbiturates
drugs that depress the activity of the CNS, reducing anxiety but impairing memory and judgment
Opiates
opium and its derivatives, such as morphine and heroin; thet depress neural activity, temporarily reducing pain and anxiety
Stimulants
drugs that excite neural activity and speed up bodily functions
Methamphetamine
a powerfully addictive drug that stimulates the central nervous system, with speeded-up bodily functions and associated energy and mood changes; over time, appears to reduce baseline dopamine levels
Ecstasy
a synthetic stimulant and mild hallucinogen. Produces euphoria
Hallucinogens
psychedelic drugs, such as LSD that distort perceptions
LSD
a powerful hallucinogenic drug known as acid
Near-death experience
an altered state of consciousness reported after a close brush with death
THC
the major active ingredient in MJ, triggers a variety of effects, including mild hallucinations