Ultrasound strain rate imaging of individual muscle motor units

Skeletal muscle is organized in motor units, each comprising a motor neuron and all its connected muscle fibres. The arrival of an action potential (a neural “impulse”) causes the fibers to contract, they exhibit a twitch. This study aimed for the spatiotemporal detection of individual twitches, which may allow for a more detailed real-time study of muscle physiology and higher fidelity in applications such as prosthesis control.