According to one embodiment, a neurological stimulation system is adapted for implantation into a person's body for electrical, chemical, or combined electrical and chemical stimulation of target nerve tissue in the person's brain stem. For electrical stimulation, the system includes an electrical stimulation...http://www.google.co.uk/patents/US20040186532?utm_source=gb-gplus-sharePatent US20040186532 - System and method for stimulation of a person's brain stem
