That portion of the inner ear and the central nervous system involved with the sense of balance. It includes the semi-circular canals, saccule, utricle and vestibule. This system controls your equilibrium (balance) and stabilizes your eyes in space. It works together with your brain to sense, maintain and regain your balance and a sense of where your body and its part are positioned. It regulates movement (walking, running, etc.) and keep objects in visual focus as the body moves. Many ototoxic drugs can damage your vestibular system. This can give rise to a whole host of balance-related problems.