EEG Neurofeedback is a safe, non-invasive, painless procedure during which sensors called electrodes are placed on the surface of the patient's head. These sensors record and give the patient information about his/her brain activation level. It is important to understand that the instruments used in this process serve only as a source of information. They read and record the activity in the brain, much like a thermometer would tell one's temperature. The information is displayed on a computer screen, together with sounds which change according to the brain's activity levels. Therefore, the patient can read, understand and influence his or her brainwave activity. Once the patient learns to access and activate the brain more effectively, symptoms of the disorder begin to dissipate.