Neuroscientists have recently discovered the brain is an endocrine organ that secretes numerous neurochemicals that can influence our behavior. Our brains secrete hormones that help create our emotions. Each of us creates different amounts of these various neuro chemicals, and those who create, for example, more endorphins (natural opiates) experience more pleasure as a result of a given experience than those who create fewer endorphins.
Tests indicate that floating increased the secretion of endorphins at the same time as it reduces the levels of a number of stress–related neuro chemicals, such as adrenaline, nordpinephrine, ACTH, and cortisol . These substances that can cause tension, anxiety, irritability and are related to ailments such as heart disease, hypertension and high levels of cholesterol.
FOR THE SPIRIT
More interesting than the well known alpha waves generated by the brain in moments of relaxation, are the slower theta waves which are accompanied by vivid memories, free association, sudden insights, creative inspiration, feeling of serenity and ‘oneness with the universe’. It is a mysterious, elusive state, potentially highly productive and enlightening; but experimenters have had a difficult time studying it and it is hard to maintain, since people tend to fall asleep once they begin generate theta waves. One way of learning to produce theta waves is to perfect the art of meditation.
Floaters quickly enter the theta state while remaining awake, consciously aware of all the vivid imagery and creative thoughts that pass through their minds, and after getting out of the floatation environment, they can continue to generate larger amounts of creativity–promoting theta waves for up to three weeks.