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Vestibular nerve
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- The vestibular nerve is one of the 12 cranial nerves originating in the brain. The cranial nerves are responsible for the senses of sight, smell, taste, hearing, and balance. They also control the muscles of the face and mouth.
www.verywellhealth.com/vestibular-nerve-anatomy-5092724
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Sep 25, 2023 · The ear is a sensory organ that picks up sound waves, allowing us to hear. It is also very important for our sense of balance: the organ of balance (the vestibular system) is found inside the inner ear.
- 2023/09/25
But he missed one of our most important senses: the vestibular (inner ear) system, which makes critical contributions to our sense of balance. In this article, I will focus on how single neurons, organised into dedicated circuits, support our ability to stay on our feet.
May 13, 2024 · The hearing system and the balance organs share a nerve pathway to the brain, known as the vestibulocochlear nerve. The connection between the hearing and vestibular system is direct, but there’s a division as well, Dr. Budenz notes. “One part is dedicated to hearing, another part to balance.”
- Anatomy
- Function
- Associated Conditions
- Rehabilitation
Structure and Location
One of 12 pairs of cranial nerves, the vestibulocochlear nerve, of which the vestibular nerve is a branch, emerges from the pons and the medulla, two parts of the brainstem. Traveling towards the front of the body along a canal in the temporal bone—a paired bone on each side of the skull—it passes through a juncture called the pontocerebellar cistern into the inner ear.It’s here that the vestibulocochlear nerve splits into the cochlear nerve (involved in hearing) and the vestibular nerve. The...
Anatomical Variations
The structure of the vestibular nerve is relatively consistent, and there are no normal variations to its course. However, its structure can be impacted when parts of the vestibulocochlear nerve are malformed at birth. These congenital defects include: 1. Michael aplasia:This rare genetic abnormality leads to an absence or severe under-development of structures in the inner ear. In some of these cases, the vestibular nerve, among others, is absent. 2. Common cavity:In cases of this birth defe...
Sensory Function
Given its role in processing information about body position, posture, and motion, the vestibular nerve is primarily associated with its sensory function. The saccule, the utricle and semicircular canals that comprise the vestibular apparatus all provide different kinds of information to this nerve. Here’s a quick breakdown: Head Position Located just behind the semicircular canals in the inner ear, the saccule is a small sac filled with fluid and calcium crystals. It also has vestibular hair...
Motor Function
Since the vestibular nerve processes information about body position and sense of motion, it also helps coordinate some aspects of body movement. Here’s a quick breakdown: 1. Regulating eye movements:The medial nuclei of the vestibular nerve in the pons and medulla of the brainstem connect to nerves regulating eye motion. Information about the position and angle of the head, as well as motion, is used to allow for coordinated eye movements. This way you’re able to keep a steady gaze while you...
Damage to the vestibular nerve can have serious implications, given its central role in sensing space and body position. Largely, this impact is experienced as vertigo (a sensation of rocking at all), dizziness, nausea, and vomiting.Conditions associated with vestibular nerve damage include: 1. Nystagmus: This is a disorder of ocular motion, in whi...
Treatment for conditions associated with damage to the vestibular nerve tends to emphasize management of the symptoms, as well as the underlying conditions that caused them. Problems with eye movement, as in nystagmus, are usually managed with glasses or contact lenses, though some may have surgery on the eye muscles. There are also a range of appr...
Jan 31, 2019 · Neuroscientist Stephen Lisberger, chair of the department of neurobiology at Duke University, studies the vestibular system, the cells responsible for maintaining your balance, and what happens when it goes wrong.
Jun 18, 2021 · How do we keep our balance? The inner ear, which senses head motions, is an important part of the intricate system of balance. So is the body's somatosensory system, which relays the feeling of the ground beneath your feet. And, of course, vision tips you off to obstacles around you.
Structural and DTI brain imaging used in combination with clinical and laboratory based balance assessment, provide a clearer picture of the brain regions that are most critically implicated in postural balance and are most affected by balance training.
