Which term refers to sleep-inducing drugs that tend to decrease central nervous system activation and behavioural activity

Question

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Sedatives are drugs that have a calming effect on the nervous system and can induce sleep. They tend to decrease central nervous system activation and behavioural activity. Cannabis and stimulants have opposite effects, while opiates are pain relievers and can have sedative effects but their primary function is not inducing sleep.

Which Term Refers to Sleep-Inducing Drugs That Tend to Decrease