Neuropsychopharmacology textbook: this is your brain on drugs
I discovered (thanks to Mind Hacks) that the American College of Neuropsychopharmacology put online a text book on, well, Neuropsychopharmacology. An enormous source of information on how drugs affect the brain. Here is (from p. 120) a schema of dopaminergic systems:
(click to enlarge)
Visit the link below to read the online text book: