Since there is no disturbance of the "sense of ownership" of the limb (a concept discussed in the Wikipedia entry on sense of agency) in this situation, and there is no clearly apparent physically ostensible explanation for how the owned limb could be moving in a purposive manner without an associated sense of agency, effectively through its own power, a cognitive dissonance is created which may be resolved through the assumption that the goal-directed limb movement is being directed by an "alien" unidentifiable external force with the capacity for directing goal-directed actions of one's own limb.