More than likely its "Altered States". http://www.imdb.com/title/tt0080360/ **edit**Actually, here's the 'trip' near the beginning of the film. http://www.youtube.com/watch?v=40FiMy-ak0k There are plenty more psychadelic segments in the film so just go to youtube and you'll find the rest(see if anything looks familiar). Adding 'solved' to your post is a RECOMMENDATION not a rule. Get a life, board nazis.

Altered States I marvel that I paid money to see CREATURE and LIFEFORCE at the theater, but strangely enough I find I have them on DVD... I think Spacehunter: Adventures in the Forbidden Zone (1983) was the last 3D movie I saw; you see it had an effect on me. -Bill