Lateral vestibular nucleus
Encyclopedia
The lateral vestibular nucleus (Deiters’s nucleus) is the continuation upward and lateralward of the principal nucleus, and in it terminate many of the ascending branches of the vestibular nerve
.
The axons bifurcate as they enter the posterior longitudinal bundle,
Other fibers are said to pass directly to the vestibulospinal fasciculus without passing into the posterior longitudinal bundle.
The fibers which pass into the vestibulospinal fasciculus are intimately concerned with equilibratory reflexes.
Other axons from Deiters’s nucleus are supposed to cross and ascend in the opposite medial lemniscus to the ventro-lateral nuclei of the thalamus
; still other fibers pass into the cerebellum with the inferior peduncle and are distributed to the cortex of the vermis and the roof nuclei of the cerebellum; according to Cajal they merely pass through the nucleus fastigii on their way to the cortex of the vermis and the hemisphere.
(1834–1863).
Vestibular nerve
The vestibular nerve is one of the two branches of the Vestibulocochlear nerve . It goes to the semicircular canals via the vestibular ganglion...
.
Anatomy
It consists of very large multipolar cells whose axons form an important part of the posterior longitudinal bundle of the same and the opposite side.The axons bifurcate as they enter the posterior longitudinal bundle,
- the ascending branches send terminals and collaterals to the motor nuclei of the abducens, trochlear and oculomotor nerveOculomotor nerveThe oculomotor nerve is the 3rd of 12 paired cranial nerves. It enters the orbit via the superior orbital fissure and controls most of the eye's movements, including constriction of the pupil and maintaining an open eyelid by innervating the Levator palpebrae superiors muscle. The optic nerve is...
s via the ascending component of the medial longitudinal fasciculusMedial longitudinal fasciculusThe medial longitudinal fasciculus is a pair of crossed fiber tracts , one on each side of the brainstem. These bundles of axons are situated near the midline of the brainstem and are composed of both ascending and descending fibers that arise from a number of sources and terminate in different...
, and are concerned in coördinating the movements of the eyes with alterations in the position of the head; - the descending branches pass down in the posterior longitudinal bundle into the anterior funiculusAnterior funiculusThe most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts, viz., an anterior funiculus, between the anterior median fissure and the most lateral of the anterior nerve roots; and a lateral funiculus,...
of the spinal cordSpinal cordThe spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the brain . The brain and spinal cord together make up the central nervous system...
as the vestibulospinal fasciculus (anterior marginal bundle) and are distributed to motor nuclei of the anterior column by terminals and collaterals.
Other fibers are said to pass directly to the vestibulospinal fasciculus without passing into the posterior longitudinal bundle.
The fibers which pass into the vestibulospinal fasciculus are intimately concerned with equilibratory reflexes.
Other axons from Deiters’s nucleus are supposed to cross and ascend in the opposite medial lemniscus to the ventro-lateral nuclei of the thalamus
Thalamus
The thalamus is a midline paired symmetrical structure within the brains of vertebrates, including humans. It is situated between the cerebral cortex and midbrain, both in terms of location and neurological connections...
; still other fibers pass into the cerebellum with the inferior peduncle and are distributed to the cortex of the vermis and the roof nuclei of the cerebellum; according to Cajal they merely pass through the nucleus fastigii on their way to the cortex of the vermis and the hemisphere.
Eponym
Deiter's nucleus was named after German neuroanatomist Otto Friedrich Karl DeitersOtto Friedrich Karl Deiters
Otto Friedrich Karl Deiters was a German neuroanatomist. He was born in Bonn, studied at the University of Bonn, and spent most of his professional career in Bonn...
(1834–1863).