Im not sure who wrote re this subject but this operation is being done in St Vincents hospital in (Darlinghurst?)Sydney Australia. It involves implanting an electrode (powered by a pacemaker battery) implanted in the brain. It can be switched off (why?)at will by the user. These operations have been successful. I'm sorry that I dont have any more to offer, but contact the hospital direct for more info.] Regards Philip __________________________________________________________ Firstname Lastname [log in to unmask] Telephone number and any other information you wish to add ---