| 摘要 |
Apparatus for establishing a region of bio-effectiveness in a human or animal body, comprising: means for generating a first EM field encompassing in part a body region, means for generating one additional EM field, means for modulating the first and the additional fields to cause them to be at a first magnitude for a first period of time and at a second magnitude for a following period of time, whith changes occurring within 10 second intervals, and means for controlling said modulation means to cause the magnitude of the first EM field and the magnitude of the additional field to be complementary, 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.
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