Resonance is a principle that was discovered by Galileo Galilei in 1602 while he studied pendulums. Resonance is the tendency of a system to oscillate with maximum amplitude at certain frequencies.
A common example of a resonance frequency is a playground swing, which acts as a pendulum. If you push a child on a swing in time with the natural interval of the swing (its resonance frequency) the swing will go higher and higher (it's maximum amplitude). Applying a pushing force at any other time will interfere with (or dampen) the resonance frequency and the swing will be disrupted and go lower or stop all together. The energy absorbed by the swing is maximized when it is in phase (or "in resonance") with the swing's oscillations.
The cell's of the human body vibrate, or oscillate. This can be seen in video footage red blood cells traveling through vessels under high magnification, or macrophages chasing bacteria. Electromagnetic impulses of the appropriate frequencies can produce cellular resonance – vibration at maximum amplitude. As with the cell, electromagnetic impulses produce resonant vibrations of these membrane receptors (neuropeptides) to stimulate a variety of functions within the cell. There are approximately 75 trillion cells in the human body. Each cell membrane has over 1 million neuropeptide receptors. An electromagnetic field applied within the biological window signals all of these receptors simultaneously at the speed of light. One can picture the cellular resonance produced – all cell's vibrating and oscillating in phase. This is the essence of magnetic resonance stimulation. The profound beneficial effects in human physiology through magnetic resonance may be produced through improved intercellular communication and intracellular interactions produced through the induction of resonance in the body.
The higher the frequency, the more difficult it is to gauge the effect on the cell. Importantly, this applies to "unnatural" frequencies in the KHz and MHz range used by wireless phones, cell phones and many common household electrical devices. The new generation of magnetic field therapy systems targets the extremely low frequency range – matching known tonic oscillatory frequencies of the body's cells. iMRS systems are examples of the use of advanced computerized stochastic resonance modeling to achieve maximum cellular resonance.
Subtle energies, such as extremely low frequency (ELF) magnetic waves, have profound effects on human physiology. One dramatic effect is the positive influence of pulsed magnetic fields on depleted bone density. To understand how this happens, we need to understand that we are dealing with waves. Waves have amplitude (strength) and frequency (which is determined by wavelength). Waves summate (adding together to become larger in amplitude) and they can also negate one another, thereby reducing amplitude. A simple example of this is the physics of sound waves. Harmony is the matching of two separate tones along the same wavelength. Two tones are combined. When their wavelengths and frequencies are in synchrony, we experience a pleasant sensation: a harmonic chord. Disharmony (e.g., music that is hard to listen to and "off key") occurs when separate tones have different wavelengths and don't match up with one another.
Carrying this musical example further, a musical "overtone" occurs when harmonies are added upon one another in perfect mathematical relation. The harmonic chord is heard, and the overtone is heard as well. The overtone is heard, but has not been sung or played by an instrument. This is an example of "resonance," or more precisely, "stochastic resonance." The overtone is not produced directly; it is derived through the frequency of sound waves vibrating (or oscillating) in harmony. This principle is fundamental to a proper understanding of magnetic waves and magnetic field therapy. Synchronous oscillation of electromagnetic waves is called resonance. Resonance is not produced directly, but is derived through a summation of electromagnetic vibrations within the cells of the body. The induction of cellular resonance – synchronous biomagnetic vibrations in the body – creates the biological window necessary to produce a healing response in the tissues. Using a proper dosage of pulsed magnetic waves a biological harmonic "overtone" is created and membrane receptors of poorly functioning cells in the body begin to vibrate at the frequency of health. Through a variety of physiological mechanisms circulation is improved, the cellular regenerative response is enhanced, healthy cell function is restored, and overall health is improved.
Harmonic oscillations are frequencies that develop as a multiple of the fundamental (or tonic) frequency – similar to the upper harmonics (or "overtones") in music. For example, rectangular impulses with a fundamental oscillation of 1 Hz simultaneously create upper harmonics of 3, 5 and 7 Hz etc. Upper harmonics to the 2nd upper harmonic has the same strength as the fundamental oscillation.
In order to create resonance, the field strengths (electromagnetic amplitude) and pulse frequencies (wavelengths) utilized must match the biological window being accessed. Mathematical calculations of probability are used to determine which field strengths and amplitudes are likely to induce the greatest resonance and therefore the most beneficial biological window for magnetic resonance stimulation.
To restate the principle of resonance yet another way, if the intensities and field strengths used in applying magnetic resonance stimulation are similar to those of the biological window, a stochastic amplification creates a more profoundly beneficial biological effect. In plain English, if the frequency is right, the human body loves it and responds nicely to it!
Rectangular impulses have a steep ascending and descending phase (sharp rise time and fall time). They create harmonics at odd-numbered frequencies (e.g., 3, 5, 7 and 9 Hz). The result is that they produce greater energetic resonance of the cells and body tissues.