This device application and monitoring will be carried out on anesthetized surgical patients at different time points in the procedure, under the same conditions as the currently utilized peripheral nerve stimulators to judge neuromuscular transmission and anesthesia effectiveness. We will also use the system on other anatomical locations that may be easier to gain assess to under certain surgical procedures: e.g., on the bicep, quadriceps, or tibialis anterior muscles. Such locations have been described by anesthesiologists as viable options.