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Psychedelic scans show LSD's effect on the brain for first time
The images show the remarkable neurological activity produced by the powerful psychoactive during a "trip," indicating users "see" with their eyes closed.
The team of scientists, in collaboration with the Beckley Foundation, took brain scans of 20 volunteers who were administered 75 micrograms of LSD (Lysergic acid diethylamide) using fMRI (functional magnetic resonance imaging) and magnetoencephalography (MEG). A control group was given a placebo. The images enabled researchers to look at electrical activity and blood flow throughout the entire brain.
LSD users typically experience complex visual hallucinations. And while the visual cortex located in the back of the head processes information from our eyes under normal conditions, the researchers found that during LSD use, a number of other brain areas also contribute to visual processing.