Techniques and Technologies in Electrical Stimulation for Neuromuscular Rehabilitation

In its simplest form, electrical stimulation is the application of electrical impulses to nerves via electrodes placed over the nerve or muscle or implanted within the body. The aim is to evoke a muscle contraction. People may not be able to activate their own muscles sufficiently to execute effective movement due to damage to the nervous system preventing the signals from the brain reaching the muscles, for example, after a stroke or spinal cord injury, or due to disuse, often because of pain. Electrical stimulation can be used to restore or improve impaired function by initiating or complementing muscle activity. Stimulation can be used either to provide exercise and so improve strength and endurance or timed to a physical activity such as walking to improve quality of movement and function.