Hi: I was just cruising the Web and stumbled on an interesting web page (still in progress) at Ohio Northern University. The URL is: http://www.onu.edu/Pharmacy/t-faulkner/drugs.html It discusses in gory detail the actions of drugs on the CNS with a lot of concentration of acetylcholine and dopamine. It leads to a lot of interesting, somewhat technical material (some with neat pictures) on chemical reactions in the brain. I believe that it is being set up by the Pharmacy dept at ONU for the use of students. Ron Reiner ([log in to unmask]) 48 + 7mosPD