Scott, this isn't precisely on the mark, more psychedelic than psychotic...but it sounds like there were a few psychotic episodes by the creative team during the making of the film, so perhaps it's a fit. Will keep looking... – Altered States (1980), written for the screen by Sidney Aaron, novel by Paddy Chayefsky http://www.youtube.com/watch?v=40FiMy-ak0k No dialogue. And CGI wasn't invented yet. At 4:58 min., this is one of director Ken Russell's most noted depictions of an hallucinogenic / psychotic episode. (Perhaps a more accurate and scientific term than "psychotic" would be "a long strange trip.") Trivia: Author Paddy Chayefsky disowned this movie. Even though the dialogue in the screenplay was almost verbatim from his novel he reportedly objected to the general tone of the film and the shouting of his precious words by the actors, this conflicting with director Ken Russell typical style of wanting heightened performances. Paddy Chayefsky had not seen the film before he took his name off the credits, the script being credited to "Sidney Aaron", a pseudonym for Chayefsky, the two names being Chayefsky's real first and middle names. Director Ken Russell and Chayefsky fought constantly during production, Russell maintaining that almost nothing was changed from Chayefsky's script and stating that he was "impossible to please." • Arthur Penn was originally slated to direct but resigned. Then special effects whiz John Dykstra also resigned from the film. • Paddy Chayefsky's novel was partially based on the work of neuroscientist and dolphin researcher John Cunningham Lilly, who invented the isolation tank, and first started taking drugs while "tanking". Lilly's work had inspired Mike Nichols' earlier dolphin movie The Day of the Dolphin. Lilly was an uncredited scientific researcher on both pictures.