It's called the LORETA neurofeedback, and how it works is you wear a cap and it has all the sensors on it and it monitors the electrical activity in your brain. You either listen to music or you watch a screen where the screen grows large or small, or the music volume goes up and down.
It creates pathways, because when your brain gets damaged from PTSD and this “mef tox”, the normal pathways in the brain are damaged and they don't communicate. LORETA neurofeedback teaches the brain to communicate around the damaged area and creates new pathways.