Disclosed is a multiple electrode, closed-loop, responsive system for the treatment of certain neurological diseases such as epilepsy, migraine headaches and Parkinson's disease. Brain electrodes would be placed in close proximity to the brain or deep within brain tissue. When a neurological event such...http://www.google.co.uk/patents/US6647296?utm_source=gb-gplus-sharePatent US6647296 - Implantable apparatus for treating neurological disorders