When using NMES, the negative electrode is placed over what area?

• A. Distal tendon
• B. Nerve trunk
• C. Muscle belly
• D. Motor point

Answer: (D)

In NMES, the negative (cathode) electrode is placed over the motor point. This is the spot where the motor nerve fibers enter the muscle closest to the skin, where excitability is highest. Positioning the cathode there lowers the activation threshold, allowing the electric current to depolarize motor neurons efficiently and produce a stronger, more reliable contraction with less current and discomfort. Placing the electrode over a tendon or muscle belly is less efficient for recruiting the muscle, and over a nerve trunk is less targeted and can increase discomfort or unintended activation.