Tic
Motor tics are movement-based tics affecting discrete muscle groups.
Mechanical doping
Motor doping, or mechanical doping, in competitive cycling terminology, is a method of cheating by using a hidden motor to help propel a racing bicycle. The term is an analogy to chemical doping in sport, cheating by using performance-enhancing drugs. As a form of "technological fraud" it is banned by the , the international governing body of cycling.