Research on Electric Stimulation System from the Angle of Control Mode

Although a single open-loop electrical stimulation system has achieved relatively good results in the field of rehabilitation treatment, it does not meet people's requirements in terms of comfort, effectiveness, and intelligence. Nowadays, closed-loop control electrical stimulation systems with biofeedback signals are rapidly developing. In this paper, we introduce the principle of electrical stimulation and biofeedback mechanism, and then the research and application of the combination of electrical stimulation system with the EMG signal, the EEG signal, and an impedance signal are described in recent years. This paper does not describe the previous literature according to the type of electrical stimulation, but innovatively describes the development of the electrical stimulation system from open-loop control to closed-loop control in terms of control methods. In various fields of medicine, electrical stimulation systems based on bioelectric signal feedback will be developed better and better in the future.