Before I begin, I'll explain what the Ganzfeld experiment is. The Ganzfeld experiment was used as a technique to test for ESP (extrasensory perception). It was used in the field of parapsychology which was big in the 1970's. The point of the Ganzfeld effect is to put you into sensory deprivation (removal of stimuli to the senses). This is usually done by putting half-ping pong balls over a subject's eyes and having red light shone over them. The subject also wears a pair of noise-isolating headphones and has white or pink noise played. This whole thing creeped me out - not anymore, however.