An implanted electrical signal generator delivers a novel exogenous electrical signal to a vagus nerve of a patient. The vagus nerve conducts action potentials originating in the heart and lungs to various structures of the brain, thereby eliciting a vagal evoked potential in those structures. The exogenous...http://www.google.de/patents/US8150508?utm_source=gb-gplus-sharePatent US8150508 - Vagus nerve stimulation method
