One method employs an electronic circuit with at least two electrical switches and at least one electrical energy store, wherein at least one control unit transmits electrical signals for controlling the at least two electrical switches, directed as coded electrical signals to at least one decoder, and decoded by the at least one decoder into a respective switch state to be set of an individual one of the switch control signals describing at least two switches, wherein the respective switch control signals are directed to the respective at least two switches and there correspondingly converted, wherein at one output of the electrical switch for excitation of at least one stimulation coil current pulses with a total length of less than 5 ms are provided, so that the at least one stimulation coil generates magnetic field pulses with a magnetic flow density of 0.1 to 10 Tesla.
