title: Does heavy marijuana use impair human cognition and brain function?
authors.forename: R I
authors.initials: RI
authors.lastname: Block
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging / Q000187:drug effects; D003071:Cognition / Q000187:drug effects*; D006801:Humans; D002189:Marijuana Abuse / Q000503:physiopathology*; D014055:Tomography, Emission-Computed