Cocaine addiction, alcoholism, obesity, normal brain scans

Cocaine addiction, alcoholism, obesity, normal brain scans

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The qualifier “psychoactive” means that the drug crosses the blood-brain barrier and causes changes in neurochemical function, resulting in amplifying effects on mood, thought, perception and behavior.

Neither of these drugs are hallucinogens like LSD. Hallucinogens are psychoactive drugs, but not all psychoactive drugs are hallucinogens — the primary difference being that hallucinogens induce changes in perception that are significantly different than normal consciousness, not merely an amplification of conscious states we already experience.