What is the role of electrodes in electrical stimulation?

Electrodes play a crucial role in electrical stimulation by conducting electrical current between the stimulation device and the body. They serve as the points of interface where the electrical energy generated by the device is delivered to the tissues. This process is essential for therapeutic effects, as the flow of electrical current can stimulate nerves or muscles, potentially leading to pain relief, muscle contraction, or other physiological responses.

In this context, electrodes need to possess good conductivity to minimize resistance and ensure that an adequate amount of current reaches the targeted areas effectively. While it’s important for electrodes not to increase resistance, their primary function is to facilitate the passage of electrical current rather than to generate voltage or convert mechanical energy. This understanding is fundamental in fields such as physiotherapy, where electrical stimulation is applied for rehabilitation purposes.