In dogs, inflating the lungs to pressures of 9 cm H2O or less reflexly increases heart rate, whereas inflating the lungs to pressures of 10-30 cm H2O reflexly decreases heart rate. The afferent fibers responsible for the cardioacceleration travel in the vagus nerves and are believed to be pulmonary stretch receptors, whereas the afferent responsible for the deceleration also travel in the vagus...

Correlation between the brain and the autonomic nerves have been studied by many authors from anatomical as well as physiological stand points, but still many there are left to be clarified. A great number of articles of E.E.G. have been published after the discovery of E.E.G. by Berger, and contributed much both to the brain physiology and clinical medicine. On the other hand, enormous advance...

1. Nicotine, 20 mug/ml, briefly and partially blocked the longitudinal contractions of a chick vagus nerve-oesophagus preparation to nerve stimulation, but potentiated them in the presence of hyoscine, 10 mug/ml.2. Strychnine, 20 mug/ml, antagonized the longitudinal contractions of the chick oesophagus to nerve stimulation, though not to acetylcholine or 5-hydroxytryptamine. Hyoscine, 10 mug/ml...

The CardioFit vagal stimulation system has been developed as a proposed therapy for congestive heart failure (CHF). CardioFit is to be implanted in several hundred CHF patients enrolled in the INOVATE-HF clinical trial, an FDA approved study. The CardioFit stimulation lead (CSL), which is a cuff electrode that delivers stimulation pulses to the right cervical vagus, was designed to recruit effe...

We present a case report to remind surgeons of this unusual complication that can occur in any surgery, even posterior cervical spine surgery under general anesthesia and discuss its causes, treatment methods, and the follow-up results in the literature. The peripheral Tapia's syndrome is a rare complication of anesthetic airway management. Main symptoms are hoarseness of voice and difficulty o...

The purpose of the present study was to modulate the secretion of insulin and glucagon in Beagle dogs by stimulation of nerves innervating the intact and partly dysfunctional pancreas. Three 33-electrode spiral cuffs were implanted on the vagus, splanchnic and pancreatic nerves in each of two animals. Partial dysfunction of the pancreas was induced with alloxan. The nerves were stimulated using...

Schwannomas (neurinomas, neurilemmomas) are benign, single, slow-growing encapsulated tumors that originate in the sheath of cranial or spinal nerves, and that rarely undergo malignant transformation. Descriptions have shown that about 25% of cases occur in the head and neck; there are only 95 references of vagus nerve involvement. These tumors appear mostly between the third and fifth decades ...

objectives:vagal pathways in gastrointestinal tract are the most important pathways that regulate ischemia/reperfusion (i/r).  gastrointestinal tract is one of the important sources of melatonin production. the aim of this study was to investigate probable protective effect of the interaction between vagus nerve and melatonin after i/r. materials and methods:this study was performed in male rat...