Investigating the Mechanisms of Hallucinogen-Induced Visions Using 3,4-Methylenedioxyamphetamine (MDA): A Randomized Controlled Trial in Humans
PLoS ONE December 2, 2010 Gantt P. Galloway, Jennifer D. Siegrist, Lynn C. Robertson et al. 22 citations
A double-blind placebo-controlled study found that the hallucinogen MDA increases closed-eye visions and mystical-type experiences. People who had more intense visions tended to perform worse on tests of contour integration and object recognition, suggesting that drug-induced hallucinations may be stronger in individuals with poorer perceptual processing. This points to possible shared mechanisms with hallucinations in psychiatric and neurological conditions.