References / Physics and formulas
The induced stimulus tracks how fast the field changes
Established physicsWhat reaches tissue depends on how fast the field changes, not on how strong it gets at its peak. That rate of change is what the report measures. Slew rate, Peak dB/dt, and Stimulation Intensity all rest on it.
Where it appears in the report: Slew Rate, Peak dB/dt Analysis, Stimulation Intensity
The evidence
By Faraday's law, a changing magnetic field induces an electric field in nearby tissue, and that induced field scales with the rate of change (dB/dt). It's the coupling the foundational PEMF bone-repair work was built on. Rate of change is the primary driver here, not the only one, since field strength and waveform shape the response too.
Primary sources
- Bassett CAL, Pawluk RJ, Pilla AA. Augmentation of Bone Repair by Inductively Coupled Electromagnetic Fields. Science. 1974;184(4136):575-577. view