White, ClaireBrown, JohnEdwards, Mark2015-12-130033-3158http://hdl.handle.net/1885/74088Rationale: The present study investigated the long-term consequences of ecstasy use on visual processes thought to reflect serotonergic functions in the occipital lobe. Evidence indicates that the main psychoactive ingredient in ecstasy (methylendioxymethKeywords: 3,4 methylenedioxymethamphetamine; alcohol; amphetamine; cannabis; cocaine; adult; alcohol abuse; article; behavior change; cannabis addiction; clinical article; cocaine dependence; cohort analysis; contour detection threshold; controlled study; drug depe Amphetamines; Contour integration; Ecstasy; Lateral inhibition; MDMA; Occipital lobe; Orientation; Serotonin; Visual perception201310.1007/s00213-013-3094-92016-02-24