Patent ID: 6853864

Claim:
Apparatus for establishing a plurality of electromagnetic (EM) fields to provide a region of bio-effectiveness in a human or animal body, the apparatus comprising; means to generate a first EM field encompassing in part a region in a human or animal body wherein bio-effectiveness is to be achieved, means to generate at least one additional EM field also in part encompassing in part said region, means for modulating the first field to cause it to be at a first magnitude for a first period of time and at a second magnitude for a following period of time, with changes occurring with approximately 10 second intervals, means for modulating the additional field to cause it to be at a first magnitude for a first period of time and at a second magnitude for a following period of time, with changes occurring within approximately 10 second intervals, means for controlling said modulation means to cause the magnitude of the first EM field and the magnitude of the additional field at all given times to be complementary in respect of time, whereby within said region the respective fields will provide a combined field having a predetermined pattern of limited differences in magnitudes but outside the region the respective fields will alternate between said first and second magnitudes.