Alpha-Stim is non-invasive brain stimulation that applies a small, pulsed electric current across the head and is used to treat anxiety, depression, insomnia and chronic pain. By changing the electrical and chemical activity of certain nerve cells in the brain, Alpha-Stim amplifies activity in some neurological systems, and diminishes activity in others. This neurological ‘fine tuning’ is called modulation, and occurs either as a result of, or together with the production of a certain type of electrical activity pattern in the brain known as an alpha state. Such alpha rhythms bring about feelings of calmness, relaxation, and increased mental focus. The neurological mechanisms that occur during the alpha state appear to decrease stress-effects, reduce agitation, stabilize mood, and regulate both sensations and perceptions of particular types of pain.