(a tit-head's reference guide)
What you'll need for this adventure:
- A pair of headphones (preferably sound-canceling)
- An MP3 player of some sort
- White noise music files
- A blindfold
- A place with no light whatsoever (dark bathroom, closet, etc...)
If you can stop your thoughts for a long enough period (it won't really be that hard to shut down for two minutes at least), all you have to do is wait for the images or sounds to come on. Some people won't be affected, and others will hallucinate their asses off. If it does work, you will have visions of random things, maybe hear voices or ethereal sounds, and possibly feel physical sensations you wouldn't normally. If you're having trouble hallucinating, you can try a different white noise file.
Oh, and if you're having difficulty finding appropriate files... I, uh... Found a reputable site for acquiring such things: Reputable Site. In order of recommendation, I would say: Nitrous (best - really fucking intense), Hand of God (OMFG), Out of Body, and uh... Orgasm (if you catch my drift).
I would finally like to turn you on to a movie about sensory deprivation. It's kind of an oldie, but if you're into psychedelic adventures, there's nothing like watching some guy turn into an ape, and then a giant morphing mass of radioactivity while on hallucinogenic mushrooms. It's called Altered States.