For the general public for CNS tissue of the head a reduction factor of 5 is applied, giving a basic restriction of 10 mV m1 between 10 and 25 Hz. Above and below these values, the basic restrictions rise. At 1,000 Hz it intersects with basic restrictions that protect against peripheral and central myelinated nerve stimulation. Here, the reduction factor of 10 results in a basic restriction of 400 mV m1, which should be applied to the tissues of all parts of the body.