Cerebration Mentor

The Cerebration Mentor (also known as a Cerebraton Mentor) was device capable of generating emotional impulses. Its inventor, Prof. Watkins, originally devised it as a sophisticated teaching aid. When the Cybermen learned of its existence, they asked their ally, Tobias Vaughn, to destroy it. But Vaughn, eager to use it as a weapon against the Cybermen, kidnapped Prof. Watkins and forced him to perfect the device. Although Vaughn was prevented from mass-producing the Cerebration Mentor, he ended up using Prof. Watkins's prototype against the Cybermen. (DW: The Invasion)