<p>Slow Cortical Potentials are slow shifts in the EGE that last from 0.3 seconds to several seconds. These are shifts in the EEG that reflect the depolarization of large groups of pyramidal cells in the cortex. These slow shifts are caused by the burning of blood glucose, that makes up the hemodynamics of the glial cells. These cells create large electro-negative swings when they depolarize. Sheets of cortical neurons are depolarized in the creation of SCPs. IT has been hypothezised that in autism spectrum cases, the threshold of depolarization is too high and in ADHD cases, the threshold of depolarization is too low. Additionally, in patients with seizure conditions, large negative potential shifts have been observed moments before a seizure. (ADHD children are taught to increase the negativity of the SCP, while autistic and seizure cases are taught to decrease the negativity of the SCP).</p><p>In Europe this method is taught by Ute Strehl, who uses a visual to reflects higher arousal (in electro-negative potentials, that is, going up) and lower arousal (in electro-positive potentials, going down). In clinical thresholding, it is important to verbally encourage and reward the patient, especially if they are children.</p><p>Ute Strehl has published extensively on her work, for which she has used a slow-wave filter and a 500-millisecodn interval moving window. This methodology is available using thought technology equipment and screens (www.thoughttechnology.com)</p><p>In America, this method is being taught by the Othmers and by Mark Smith. Smith has reported clinical results including increased relaxation, better sleep, profound changes in physiology, and a renewed sense of well-being in daily life. ISF neurofeedback was put to the test by using Biofeedback equipment that measured a subject’s physiological response to the training. What was found during that training was blood pressure normalized, heart rate slowed, hands became warm and dry, breathing became deeper and slower and the big muscles in the shoulders (Trapezius) relaxed. All direct indications of the relaxation response.</p>