1.   They also have electrodes on either side of those materials that apply the voltages to change the index of refraction.

2.   At one point, Smith had electrodes that had been attached to his left hamstring in his hand.

3.   The device has six electrodes radiating from it, three of which are placed above the spinal injury site, and three below it.

4.   With it, patients taking a simple EKG-monitored treadmill stress test have special electrodes placed on their chests.