Apparatus is provided that includes an electrode device, adapted to be coupled to a vagus nerve of a subject, and a control unit, adapted to drive the electrode device to apply to the vagus nerve a current that reduces heart rate variability of the subject. Also provided is a method comprising applying...http://www.google.de/patents/US7778711?utm_source=gb-gplus-sharePatent US7778711 - Reduction of heart rate variability by parasympathetic stimulation
