You know, I vaguely remember once reading a scientific article about researchers who claimed to have located the neurological basis for consciousness by watching portions of a monkey's brain become excited - neurons firing in the milliseconds before the animal committed an act. I forget what kind of act. I remember it was simple, repetitive. The researchers claimed that these measurable neural firings before an action represented the existence of an a priori impulse or will, the action of pure consciousness, a conscious desire.