Stomach Wall Pacemaker and Bionic Arm

I came across this article which briefly described a woman who lost 84 pounds without breaking a sweat. They implanted a pacemaker with electrodes connected to her stomach wall which sends her signals making her feel full faster and with much less food. I imagine they are closely connected to the mechano receptors which signal when the stomach wall is stretched. The other part of the article discusses a man who lost his arms and now has bionic arms which he can control with his nervous system. Dr. Kuiken took a minimally damaged nerves from the man's original arm and attached them to his chest. When the brain fires a signal to the nerve it activates and electrode which then signal the new arm.

http://www.ivanhoe.com/channels/p_channelstory.cfm?storyid=13673