Pilotbrain
this was the name used by the Yuuzhan Vong to describe the organism which controlled the operation of one of their coralcraft. Each pilotbrain was linked telepathically to a specific pilot from its "birth", so that the Yuuzhan Vong's mental imprint was a form of key that would restrict access to the coralcraft's controls. The pilotbrain was linked to its pilot via a cognition hood, which relaying information almost simultaneously between pilotbrain and pilot.