The mechanisms of the physiological and therapeutic effects of broadband modulation currents, the peculiarities of their impact on the main functional and regulatory systems of the human body, as well as therapeutic techniques, indications and contraindications for therapeutic use, the fundamentals of physics and biophysics of medium-frequency electrical exposure have been studied. The technique and methods of carrying out medical procedures using the modern domestic apparatus "Nadezhda" for treatment with broadband modulation currents are presented.