What do electrodes need to effectively deliver electrical stimulation?

For electrodes to effectively deliver electrical stimulation, good contact with the skin or tissue is essential. This contact ensures that the electrical current can flow through the skin and into the underlying tissues with minimal resistance. If the contact is poor, it can result in insufficient current delivery, ineffective stimulation, and potentially cause discomfort to the patient.

Proper electrode placement and ensuring that they are securely attached to the skin allows for optimal transmission of the electrical signal. Factors like skin preparation, the nature of the electrode surface, and the use of conductive gels can further enhance the contact quality between the electrode and the skin, maximizing the therapeutic effects of electrical stimulation.