sentences:  Directing the magnetic field pulse at a targeted area in the brain causes a localized electrical current which can then either depolarize or hyperpolarize neurons at that site.The magnetic flux generated by the current causes its own electric field, as explained by the Maxwell-Faraday equation,
  formula_2 .This electric field causes a change in transmembrane currents resulting in depolarization or hyperpolarization of neurons, causing them to be more or less excitable, respectively.