Final answer:
Transcranial magnetic stimulation (TMS) is a CAM category that involves the use of magnetic fields to treat brain disorders. It operates on the principle of electromagnetic induction to restore normal brain function. Medical diagnostics also use magnetic field measurements, such as MCG and MEG.
Step-by-step explanation:
The type of Complementary and Alternative Medicine (CAM) category that involves the use of energy fields such as magnetic fields is often referred to as biofield therapy or electromagnetic therapy. One prominent example is transcranial magnetic stimulation (TMS), where rapidly varying and localized magnetic fields are used to stimulate certain areas of the brain to treat disorders like depression.
This treatment is founded on the principle of inducing weak electric currents in the brain to potentially restore normal electrical functioning in brain tissue. Moreover, magnetic fields are also measured in medical diagnostics like magnetocardiograms (MCG) and magnetoencephalograms (MEG), which record the magnetic activity of the heart and brain, respectively. While some claims about magnetic therapies, such as magnetic bracelets and mattresses, lack scientific verification, the medical application of magnetism, as seen in TMS and diagnostic imaging such as MRI, is a growing field of scientific research and healthcare.