The History of Floatation

History of Floatation

The American neurophysiologist Professor Dr. John C Lilly developed the first floatation tank in the 1950’s, perfecting it in the 1970’s. He designed the float tank as a system to help him investigate conscious activity in the brain.

While working at the national institute of Mental Health (NIMH) in Bethesda, Maryland, Dr. Lilly and his colleague Dr. Jay Shirley commenced experiments with physical isolation. They wanted to know if the brain needed external stimuli to keep its conscious states active. So, they began devising a system that would restrict environmental stimulation as much as possible.

In the first tank Dr. Lilly developed, the floater was suspended upright and completely submerged, with their head covered by an underwater breathing apparatus and mask.

Over the years, Dr. Lilly continued his floatation experiments, simplifying and improving the general design of the tanks. He found that he could float in a more relaxing lying down position if he used salt water (which is more buoyant).

In time he added other improvements such as:

  • Water heaters with thermometers to keep the water at a perfect temperature
  • An air pump to keep the air in the tank fresh
  • A water filter for re-using the Epsom salts.

By the early 1970’s Dr. Lilly had perfected his floatation tank. The design was largely the same as that of modern-day float tanks.

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