System for inducing electric field pulses in a body organ

Systems and methods for providing controllable pulse parameter magnetic stimulation are described. One aspect is directed to a magnetic stimulation system for inducing approximately rectangular electric field pulses in a body organ, comprising an electrical energy storage device, a stimulating coil, and a switching means for electrically coupling said electrical energy storage device to said stimulating coil to produce current pulses in said stimulating coil which generates, in response to the current pulses, magnetic field pulses that can induce approximately rectangular electric field pulses in the body organ.