Where does the vestibular nuclei project to?

The vestibular neurons project to the four vestibular nuclei, that is, superior, inferior, medial, and lateral, which lie under the floor of the fourth ventricle in the pons and rostral medulla.

What are cerebellar nuclei?

The cerebellar nuclei comprise 4 paired deep grey matter nuclei deep within the cerebellum near the fourth ventricle. They are arranged in the following order, from lateral to medial: dentate nuclei (the largest and most lateral) emboliform nuclei. globose nuclei.

Which three primary areas in the CNS receives input from the vestibular nuclei?

It receives its input from the SCCs (Harsha). This tract is also used during several pathways involving head and neck reflexes. The ascending pathways of the vestibular system head to three main targets: cerebellum, thalamus-cortex, and the oculomotor nucleus.

What inputs go into vestibular nuclei?

Vestibular nuclei receive input from the hair cells in the ampullae of the semicircular canals and are connected with extraocular CN motor nuclei, thereby permitting vestibular reflex control of eye movements.

What does the medial vestibular nuclei do?

The medial vestibular tract starts in the medial vestibular nucleus and extends bilaterally through mid-thoracic levels of the spinal cord in the MLF. This tract affects head movements and helps integrate head and eye movements.

What is vestibular cerebellum?

The vestibular system contains five organs that are sensitive to different types of movement. Information about these movements is sent from the vestibular system to the cerebellum, which co-ordinates the motor movements needed to maintain posture and balance (Ito, 2006).

What does the vestibular system detect?

The vestibular system detects motion of the head in space and in turn generates reflexes that are crucial for our daily activities, such as stabilizing the visual axis (gaze) and maintaining head and body posture.

What is the function of the deep cerebellar nuclei?

The cerebellar deep nuclei are the sole outputs of the cerebellum. The fastigial nucleus is the most medially located of the cerebellar nuclei. It receives input from the vermis and from cerebellar afferents that carry vestibular, proximal somatosensory, auditory, and visual information.

How many nuclei are in cerebellar?

four cerebellar nuclei
Anatomical Parts The cerebellum has four cerebellar nuclei embedded in the white matter in its center.

Where is the superior vestibular nucleus located in the cerebellum?

The superior vestibular nucleus is a large cell group extending from the caudal pole of the parabrachial complex to the level of the rostral tip of lobule 10 of the cerebellum (Figs. 12.5, 12.6). For much of its rostrocaudal extent is lies dorsal to the lateral vestibular nucleus.

Where are axons of the vestibular root continued?

Some of the axons of the cells of the lateral nucleus, and possibly also of the medial nucleus, are continued upward through the inferior peduncle to the roof nuclei of the opposite side of the cerebellum, to which also other fibers of the vestibular root are prolonged without interruption in the nuclei of the medulla oblongata.

Where does the medial vestibulospinal tract descend to?

The medial vestibulospinal tract is shown in red. It descends bilaterally in the MLF to thoracic levels. The cerebellar afferents are not shown in this summary, but these come from the medial and inferior vestibular nuclei. The 1st order vestibular afferents arise in Scarpa’s ganglion, which is in the distal portion of the internal auditory meatus.

Where do axons of superior cerebellar peduncle project to?

Axons of the superior cerebellar peduncle project to the red nucleus and the thalamus, but there is little clinical correlation for the fibers to the red nucleus. Axons of the cerebellothalamic tract (or dentatothalamic tract) pass through and around the red nucleus to the thalamus.