 The vestibular system, which is responsible for the sense of balance in humans, consists of the otolith organs and the semicircular canals.Illusions in aviation are caused when the brain cannot reconcile inputs from the vestibular system and visual system.The three semicircular canals, which recognize accelerations in pitch, yaw, and roll, are stimulated by angular accelerations; while the otolith organs, the saccule and utricle, are stimulated by linear accelerations.