Electromagnetic device for stimulating a particular encephalic area comprising at least a current generator and characterized in that it is provided with at least a coil of circular shape for stimulating a portion of the brain lobes in a localized way and in that it generates an electric power between 0 and 50 Watt at a frequency between 3 and 20 Hz adjustable in continuum to determine a brain synchronization effect in response to an applied magnetic field.