Click here to close
Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly.
We suggest using a current version of Chrome,
FireFox, or Safari.
Efferent neurons of the lateral-line system and the VIII cranial nerve in the brainstem of anurans. A comparative study using retrograde tracer methods.
Will U
.
???displayArticle.abstract???
The octavo-lateral efferent system of several anuran species was studied by means of retrograde transport of horseradish peroxidase. This system is organized similarly in all larval anurans and in all adult aglossids. All have two groups of efferent neurons in the nucleus reticularis medialis between the VIIIth and the IXth motor nucleus. The caudal group consists of efferent neurons that supply the posteriorlateral-line nerve (NLLp) and a considerably smaller group of neurons supplying both the NLLp and the anteriorlateral-line nerve (NLLa). The rostral group is composed of efferent neurons supplying the NLLa, neurons projecting to the inner ear and neurons supplying both the inner ear and the NLLa. Efferent neurons of the VIIIth cranial nerve exhibit a rostrocaudal cytoarchitectonic differentiation. Caudal perikarya, which are rounder in shape than those of the rostral part, have a dendritic projection to the superior olive. It is suggested that this differentiation reflects a functional differentiation of acoustic and vestibular efferent neurons. Labeled neurons were ipsilateral to the site of application of HRP. None were found in the vestibular nuclei or in the cerebellum. Efferent axons projecting to neuromasts of the NLLa leave the medulla with the VIIth nerve, axons projecting to neuromasts of the NLLp exit via the IXth nerve. Cell counts and the observation of axonal branching revealed that efferent units of both the lateral-line and the VIIIth-nerve system supply more than one receptor organ. In contrast to the lateral-line system, dendrites of efferent neurons of the VIIIth nerve project dorsally onto its nuclei, and afferents of the VIIIth nerve project onto efferent neurons. These structures most probably represent a feedback loop between the afferent and efferent systems of the VIIIth cranial nerve.
Bell,
Central distribution of octavolateral afferents and efferents in a teleost (Mormyridae).
1981, Pubmed
Bell,
Central distribution of octavolateral afferents and efferents in a teleost (Mormyridae).
1981,
Pubmed
Claas,
Common efferents to lateral line and labyrinthine hair cells in aquatic vertebrates.
1981,
Pubmed
Claas,
Bonyfish lateral line efferent neurons identified by retrograde axonal transport of horseradish peroxidase (HRP).
1980,
Pubmed
Fritzsch,
Efferent neurons to the labyrinth of Salamandra salamandra as revealed by retrograde transport of horseradish peroxidase.
1981,
Pubmed
Fritzsch,
The pattern of lateral-line afferents in urodeles. A horseradish-peroxidase study.
1981,
Pubmed
Gacek,
The localization of vestibular efferent neurons in the kitten with horseradish peroxidase.
1974,
Pubmed
Goldberg,
Efferent vestibular system in the squirrel monkey: anatomical location and influence on afferent activity.
1980,
Pubmed
Malmgren,
A sensitive method for histochemical demonstration of horseradish peroxidase in neurons following retrograde axonal transport.
1978,
Pubmed
Matesz,
The motor column and sensory projections of the branchial cranial nerves in the frog.
1978,
Pubmed
Mensah,
Neuromelanin: a source of possible error in HRP material.
1975,
Pubmed
Nauta,
Afferents to the rat caudoputamen studied with horseradish peroxidase. An evaluation of a retrograde neuroanatomical research method.
1974,
Pubmed
Precht,
Intracellular study of frog's vestibular neurons in relation to the labyrinth and spinal cord.
1974,
Pubmed
Robbins,
Anatomical distribution of efferent fibers in the 8th cranial nerve of the bullfrog (Rana catesbeiana).
1967,
Pubmed
Ross,
The general visceral efferent component of the eighth cranial nerve.
1969,
Pubmed
Rubinson,
Vagal afferent projections in Rana pipiens, Rana catesbeiana, and Xenopus mülleri. With a note on lateral line and VIII nerve projection zones.
1977,
Pubmed
,
Xenbase
Schwarz,
Efferent vestibular neurons: a study employing retrograde tracer methods in the pigeon (Columba livia).
1981,
Pubmed
Shelton,
The lateral line system at metamorphosis in Xenopus laevis (Daudin).
1970,
Pubmed
,
Xenbase
Strutz,
Origin of centrifugal fibers to the labyrinth in the frog (Rana esculenta). A study with the fluorescent retrograde neuronal tracer 'Fast blue'.
1981,
Pubmed
Strutz,
The origin of centrifugal fibers to the inner ear in Caiman crocodilus. A horseradish peroxidase study.
1981,
Pubmed
Strutz,
Origin of efferent fibers of the vestibular apparatus in goldfish. A horseradish peroxidase study.
1980,
Pubmed
Szabo,
On the course and origin of cranial nerves in the teleost fish Gnathonemus determined by ortho- and retrograde horseradish peroxidase axonal transport.
1979,
Pubmed
Warr,
Olivocochlear and vestibular efferent neurons of the feline brain stem: their location, morphology and number determined by retrograde axonal transport and acetylcholinesterase histochemistry.
1975,
Pubmed
