Vestibular nuclei

Vestibular Nuclei

Vestibular nuclei (/vɛˈstɪbjʊlər ˈnjuːkliːaɪ/; singular: nucleus) are clusters of neurons in the brainstem that are responsible for processing sensory information about balance and spatial orientation from the inner ear, the eyes and the somatosensory system.

Etymology

The term "vestibular" is derived from the Latin word vestibulum, which means entrance, referring to the vestibule of the ear. The term "nuclei" is derived from the Latin word nucleus, meaning kernel or core.

Function

The vestibular nuclei integrate sensory information to generate and control adjustments in posture and eye movement. They receive input from the vestibular nerve and send output to the ocular motor nuclei and the spinal cord.

Components

The vestibular nuclei consist of four paired nuclei: the superior, lateral, medial, and inferior vestibular nuclei. Each of these nuclei has a specific role in processing sensory information and controlling balance and eye movements.

Superior Vestibular Nucleus: This nucleus receives input from the semicircular canals and is involved in the control of eye movements.
Lateral Vestibular Nucleus: This nucleus receives input from the otolith organs and is involved in the control of posture.
Medial Vestibular Nucleus: This nucleus receives input from both the semicircular canals and the otolith organs and is involved in the control of both eye movements and posture.
Inferior Vestibular Nucleus: This nucleus receives input from all vestibular receptors and is involved in the control of both eye movements and posture.

Related Terms

External links

Medical encyclopedia article on Vestibular nuclei
Wikipedia's article - Vestibular nuclei

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Vestibular nuclei