Advances in Sensory Feedback Based on Transcutaneous Electrical Stimulation

Upper limb sensory dysfunction is the main problem in the follow-up rehabilitation of stroke patients. With the increasing demand for human-computer interaction, sensory feedback has become more and more important. Rehabilitation therapy is often accompanied by multi-sensory assisted therapy, which also has obvious benefits for the clinical treatment of stroke patients. TENS can stimulate sensory nerves in damaged areas, helping to improve sensory disorders in stroke patients by activating specific neural pathways that promote brain plasticity and functional reorganization. This paper presents the research progress and prospects of electrical stimulation for the output of sensory stimulation, classifies and discusses the characteristics and treatment difficulties of sensory disorders in stroke patients. The technical theory and application of electrical stimulation are introduced. Electrical stimulation technology is divided into the following categories, electrical stimulation principle, electrode and electrical stimulation site selection, electrical stimulation model parameters. The application of electrical stimulation is divided into the following categories, such as electrical stimulation for sensory replacement, sensory recovery, bionic electrical stimulation and sensorimotor recovery. The current state of the art has demonstrated the effectiveness of this approach and the flexibility of electro haptic feedback. However, the establishment of complex electrical stimulation model parameters and resolution limitations pose challenges for accurate electrohaptics. The in-depth understanding and breakthrough innovation of the action mechanism of electrical stimulation provide theoretical support for its application in different rehabilitation fields.