We all have particular experiences or particular things -- a favorite song, for example -- that mean much more to us than others. Now, researchers who've studied how perceptions of meaning change when ...

New research out of Switzerland used LSD to uncover how exactly the brain attributes emotional meaning to different aspects of life. Their findings have important implications for psychiatric ...

Lysergic acid diethylamide (LSD), psilocybin (the psychoactive compound in “magic mushrooms”) and mescaline are three of the most widely studied classic psychedelics. Each has a long history of ...

Marijuana has been classified since 1970 as a so-called "Schedule I" drug along with heroin, ecstasy and LSD, meaning it is deemed to have no accepted medical use and a high potential for abuse. The ...