Guillaume Duchenne's Electrodes

Is an artifact meant to control people and their actions from Duchenne experimenting on electrophysiology, these being the set that were used in his his experiment with facial expressions. When placed on one person and someone else squeezes another electrode in their fist, they can control the other person's emotions. This does not stimulate their thoughts, but just causes raw human emotion to bubble up at the user's choice, causing them to act by emotion and not thought. People who are affected remember their outbursts; can also be used in reverse.