21. The mechanized tracheotome consisted of a staple, cutting blade, specialized plunger and a motor unit . 22. Despite the debate, orderly recruitment of motor units can be achieved under optical control in vivo. 23. Lindsley ( 1935 ) found that relaxed subjects could suppress motor unit firing without biofeedback training. 24. In SPS patients, motor unit neurons fire involuntarily in a way that resembles a normal contraction. 25. Surface-detected motor unit action potential ( SMUAP ) size is the contribution of individual motor units . 26. It is not possible to use the motor unit or electronic shifters with the 700 model. 27. EMG measures action potentials, called Motor Unit Action Potentials ( MUAPs ), created during muscle contraction. 28. This helped maintain a stock of dynamo and motor units and even chassis, making restorations possible. 29. As more and larger motor units are activated, the force of muscle contraction becomes progressively stronger. 30. Surface-detected motor unit action potential ( SMUAP ) size is the contribution of individual motor units.