1 Hallucinogens (Psychedelics). 2 Hallucinogens substances that alter sensory processing in the brain, causing perceptual disturbances, changes in thought.
Chapter 12 Hallucinogens
1 Hallucinogens By Kasey Andrews Kelly McDowell. 2 Statistics 1965-1971: Hallucinogen use rose tenfold from 90,000 to 900,000 new users. 1990-2000:
