"foc.us is a consumer transcranial stimulator. It is designed to produce a very small electrical current suitable for stimulating parts of the brain via electrodes. By targeting different parts of the brain with electricity you can change the way that part of the brain responds, temporarily. There have been hundreds of different studies conducted at universities around the world with some amazing results. Studies often use novel electrode placements or different electrical current profiles such as alternating current or random noise current. foc.us is designed to give you access to these options in a safe easy to use device." - That's So CAJ!