Abstract: Methods of nerve signal differentiation, methods of delivering therapy using such nerve signal differentiation, and to systems and devices for performing such methods. Nerve signal differentiation may include locating two electrodes proximate nerve tissue and differentiating between efferent and afferent components of nerve signals monitored using the two electrodes.

Abstract: Methods for treating a patient and further to devices for performing such treatment, e.g., methods and devices to perturb at least one physiological system and deliver therapy to the patient based on the effects of such perturbation. For example, a method for using an implantable medical device is disclosed that involves delivering electrical stimuli to an efferent nerve associated with the selected organ. Afferent electrical activity is monitored during delivery of electrical stimuli to the efferent nerve, the monitored afferent electrical activity includes an indirect component of a compound action potential (CAP). A status of the selected organ is assessed based upon the indirect component. A determination is made as to whether to deliver therapy to the selected organ in response to assessing the status of the selected organ.

Abstract: Methods for treating a patient and further to devices for performing such treatment, e.g., methods and devices to perturb at least one physiological system and deliver therapy to the patient based on the effects of such perturbation. For example, a method for using an implantable medical device is disclosed that involves delivering electrical stimuli to an efferent nerve associated with the selected organ. Afferent electrical activity is monitored during delivery of electrical stimuli to the efferent nerve, the monitored afferent electrical activity includes an indirect component of a compound action potential (CAP). A status of the selected organ is assessed based upon the indirect component. A determination is made as to whether to deliver therapy to the selected organ in response to assessing the status of the selected organ.

Abstract: An implantable medical device senses atrial depolarizations having associated refractory periods thereafter and delivers electrical stimulation pulses during the associated refractory periods to stimulate the atrioventricular (AV) node to cause a prolonged conduction time of an atrial depolarization to a ventricular chamber. The device delivers a pacing pulse to a first ventricular chamber during the prolonged conduction time to cause a contraction and associated refractory period of the first ventricular chamber, the first ventricular chamber contraction occurring earlier than a contraction of a second ventricular chamber.

Abstract: The disclosure herein relates generally to methods for treating heart conditions using vagal stimulation, and further to systems and devices for performing such treatment. Such methods may include monitoring physiological parameters of a patient, detecting cardiac conditions, and delivering vagal stimulation (e.g., electrical stimulation to the vagus nerve or neurons having parasympathetic function) to the patient to treat the detected cardiac conditions.

Abstract: The disclosure herein relates generally to methods for treating heart conditions using vagal stimulation, and further to systems and devices for performing such treatment. Such methods may include monitoring physiological parameters of a patient, detecting cardiac conditions, and delivering vagal stimulation (e.g., electrical stimulation to the vagus nerve or neurons having parasympathetic function) to the patient to treat the detected cardiac conditions.

Abstract: The disclosure herein relates generally to methods for treating heart conditions using vagal stimulation, and further to systems and devices for performing such treatment. Such methods may include monitoring physiological parameters of a patient, detecting cardiac conditions, and delivering vagal stimulation (e.g., electrical stimulation to the vagus nerve or neurons having parasympathetic function) to the patient to treat the detected cardiac conditions.

Abstract: Methods of nerve signal differentiation, methods of delivering therapy using such nerve signal differentiation, and to systems and devices for performing such methods. Nerve signal differentiation may include locating two electrodes proximate nerve tissue and differentiating between efferent and afferent components of nerve signals monitored using the two electrodes.

Abstract: Methods of nerve signal differentiation, methods of delivering therapy using such nerve signal differentiation, and to systems and devices for performing such methods. Nerve signal differentiation may include locating two electrodes proximate nerve tissue and differentiating between efferent and afferent components of nerve signals monitored using the two electrodes.

Abstract: Methods for treating a patient and further to devices for performing such treatment, e.g., methods and devices to perturb at least one physiological system and deliver therapy to the patient based on the effects of such perturbation. For example, a method for using an implantable medical device is disclosed that involves delivering electrical stimuli to an efferent nerve associated with the selected organ. Afferent electrical activity is monitored during delivery of electrical stimuli to the efferent nerve, the monitored afferent electrical activity includes an indirect component of a compound action potential (CAP). A status of the selected organ is assessed based upon the indirect component. A determination is made as to whether to deliver therapy to the selected organ in response to assessing the status of the selected organ.

Abstract: Methods for treating a patient and further to devices for performing such treatment, e.g., methods and devices to perturb at least one physiological system and deliver therapy to the patient based on the effects of such perturbation. For example, a method for using an implantable medical device is disclosed that involves delivering electrical stimuli to an efferent nerve associated with the selected organ. Afferent electrical activity is monitored during delivery of electrical stimuli to the efferent nerve, the monitored afferent electrical activity includes an indirect component of a compound action potential (CAP). A status of the selected organ is assessed based upon the indirect component. A determination is made as to whether to deliver therapy to the selected organ in response to assessing the status of the selected organ.

Abstract: Methods for treating a patient and further to devices for performing such treatment, e.g., methods and devices to perturb at least one physiological system and deliver therapy to the patient based on the effects of such perturbation. For example, a method for using an implantable medical device is disclosed that involves a method for using an implantable medical device delivering electrical stimuli to an afferent nerve associated with the selected organ. The efferent electrical activity is monitored in an efferent nerve responsive to delivering electrical stimuli to the afferent nerve, the monitored efferent electrical activity includes an indirect component of a compound action potential (CAP). A status of the selected organ is assessed based upon the indirect component.