An apparatus and method in which the portions of the labyrinth associated with the labyrinthine sense and/or the nerves associated therewith are stimulated to perform at least one of the following functions: augment or control a patient's respiratory function, open the patient's airway, induce sleep,...http://www.google.co.uk/patents/US7469162?utm_source=gb-gplus-sharePatent US7469162 - Vestibular stimulation system and method