The Science of Creativity
Float tanks are an ideal environment to naturally shift your brainwave output from typical beta brainwaves (normal day-to-day operations dealing with the outside world) and gradually shift them toward achieving theta state (associated with a quieting of the body and busy thoughts while allowing the more interesting, creative, unrecognized parts of the brain to come to consciousness).
Achieving theta state is something that happens naturally while in the float tanks as the body and the “monkey-mind” start to quiet, giving way to more profound modes of consciousness. One characteristic of theta state is what is called hypnogogic imagery (hip-nuh-gog-ick). Hypnogogic imagery is that fleeting moment before you fall asleep when your minds eye visualizes vivid scenes and images. Theta brainwaves and the hypnogogic images therein have been closely likened to the zen mindset of yogis, master meditators, and individuals with elevated consciousness.
Thats just a drop in the bucket too – there are infinite possibilities of consciousness within the float tank and within the theta state. Floaters need not (at least in the beginning) have knowledge of any method or technique for achieving these states… they only need to lie back and relax into the water.