The left side of the tongue of the Mongolian gerbil, Meriones unguiculatus, was experimentally innervated with both chorda tympani nerves. While this dual innervation did not increase the number or volume of fungiform taste buds on the left side, at least half of the taste buds were dually innervated since they could be neurotrophically maintained by either chorda tympani nerve. Impulse dischar...

The chorda tympani is an important anatomical structure in the tympanic cavity. It may have some anatomic variations. Its anatomic variations are of interest in certain otologic surgical procedures. There are limited reports in the literature about the variations of the chorda tympani. A 49-year-old female patient was refered to our clinic because of conductive hearing loss and tympanic membran...

BACKGROUND Chorda tympani nerve is a branch of the facial nerve which enables perception of taste of 2/3 anterior part of tongue and it is responsible for unilateral parasymphatetic nerve supplying of the submandibular and sublinqual salivary glands. MATERIAL AND METHODS Prospective analysis of patients operated on middle ear in ENT Department Jagiellonian University of Krakow between 2004-20...

1 The regulation of the benzamil (Bz)-insensitive salt taste receptor was 2 investigated by intracellular Ca ([Ca]i), protein kinase C (PKC) and the Ca3 dependent serine-threonine phosphatase, calcineurin (PP2B), by monitoring chorda 4 tympani taste nerve responses to 0.1M NaCl solutions containing Bz (5x10 M) and 5 resiniferatoxin (RTX; 0-10x10 M) in Sprague-Dawley rats and in wildtype (WT) an...

Neural competition among multiple inputs can affect the refinement and maintenance of terminal fields in sensory systems. In the rat gustatory system, the chorda tympani, greater superficial petrosal, and glossopharyngeal nerves have distinct but overlapping terminal fields in the first central relay, the nucleus of the solitary tract. This overlap is largest at early postnatal ages followed by...

The regulation of the benzamil (Bz)-insensitive salt taste receptor was investigated by intracellular Ca2+ ([Ca2+]i), protein kinase C (PKC), and the Ca2+-dependent serine-threonine phosphatase, calcineurin (PP2B), by monitoring chorda tympani taste nerve responses to 0.1 M NaCl solutions containing Bz (5x10(-6) M) and resiniferatoxin (RTX; 0-10x10(-6) M) in Sprague-Dawley rats and in wild-type...

Facial nerve schwannomas (FNS) are a rare entity that are poorly reported in literature. Although the estimated prevalence is extremely low, FNS are the most common primary tumor of the facial nerve. FNS occur throughout the course of the facial nerve and its branches, and chorda tympani schwannomas are quite rare. In 2010, Huoh and Cheung reported that seven additional chorda tympani schwannom...

Sweet taste sensitivity in obese rats with lesions of the ventromedial hypothalamus (VMH) was studied by examining chorda tympani nerve responses to various taste stimuli including sugars. In the early progressive phase of obesity (2 wk after creating VMH lesions), there was no significant difference in the nerve responses to any taste stimulus between sham-operated and VMH-lesioned rats. In co...

Studies using anesthesia provide insights into oral phantoms. The chorda tympani nerve is accessible for anesthesia at two sites. First, the chorda tympani leaves the tongue with the lingual nerve (CN V) and the two travel through the pterygomandibular space. The inferior alveolar nerve, which conveys pain from the lower teeth, passes through the same space; thus dental anesthesia abolishes tas...