| A | B |
|---|
| psychoactive drugs | drug or other substance that affects how the brain works and causes changes in mood, awareness, thoughts, feelings, or behavior. |
| agonists | a drug that produces a similar response to the intended chemical and receptor. (MORE!) |
| antagonists | a drug that binds to the receptor which stops the receptor from producing a response. (STOPS!) |
| tolerance | more a person uses a substance, the more tolerant their body becomes, causing them to have to take more and more of the substance to achieve the same high. |
| dependence | means that withdrawal symptoms appear if they stop the addictive substance or behavior. |
| withdrawal | the process of cutting out, or cutting back on, addictive substances, such as drugs or alcohol, or behaviors, such as gambling. |
| stimulants | drugs that are known to excite neural activity |
| depressants | drugs that reduce or slow our neural activity |
| hallucinogens (psychedelics) | distort perception and evoke sensory images without any actual sensory input: |
| Examples of hallucinogens | THC (marijuana) and LSD |
| Examples of stimulants | caffeine, nicotine, cocaine, methamphetamine, amphetamines, and ecstasy |
| Examples of depressants | alcohol, barbiturates, and opiates |
| opiates | depress neural activity, temporarily lessening pain and anxiety as well: stop the body's production of endorphins |
