The electrical signals and potentials naturally generated by biological cells and tissues. Every cell maintains a resting membrane potential (typically -70 to -90 mV) created by ion concentration gradients across the membrane, and this voltage is central to how cells function and communicate. When cells are injured or stressed, this resting voltage can change. Because PEMF induces small electrical currents in tissue, one proposed mechanism is that it interacts with these natural bioelectric processes. That is a proposed coupling between the field and the cell, not a claim of a specific repair outcome.
A living cell holds a small voltage across its membrane, more positive on one side than the other. Channels in the membrane let charged ions cross, which shifts that voltage. This is the electrical side of a cell that a changing magnetic field can interact with. It is background biology, not a claim about any specific outcome.
