Vestibular system


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Vestibular system

The area of the inner ear that helps maintain balance.
Mentioned in: Dizziness

vestibular

1. pertaining to any vestibule.
2. pertaining to the vestibular organ.

vestibular apparatus
includes the vestibular organ and the vestibular branch of the vestibulocochlear nerve.
canine idiopathic vestibular syndrome
seen in aged dogs, characterized by the sudden onset of head tilt, nystagmus, rolling, falling and circling, often with considerable distress. The cause is unknown, but a peripheral vestibular lesion is suspected. Signs usually regress within a few days. Called also geriatric vestibular syndrome, 'stroke'.
feline vestibular syndrome
an acute onset of head tilt, rolling and nystagmus in cats of all ages. There is usually rapid improvement over a few days. The cause is unknown.
geriatric vestibular syndrome
see canine idiopathic vestibular syndrome (above).
vestibular gland
vestibular membrane
one of the membranes subdividing the osseous labyrinth into three compartments.
vestibular organ
consists of a bony labyrinth containing a membranous labyrinth in the inner ear. Part of the membranous labyrinth is the nonacoustic labyrinth or vestibular organ. The vestibular organ consists of the membranous saccule and utricle and semicircular canals. The semicircular canals contain balance end organs called cristae and the saccule and utricle contain similar end organs called maculae. The organ is essential in the maintenance of the animal's balance.
paradoxical vestibular syndrome
vestibular signs of head tilt and ataxia to the side opposite the lesion. Reported in dogs with tumors of the choroid plexus.
vestibular syndrome
see vestibular ataxia, canine idiopathic vestibular syndrome (above), feline vestibular syndrome (above).
vestibular system
see vestibular apparatus (above).
vestibular window
see oval window.
References in periodicals archive ?
Absence of thyroid hormone stimulation impairs neural stimulus conduction in the central vestibular system.
Disorders of the vestibular system can result from damage to either the peripheral or the central vestibular system.
However, when we consider the complex anatomy and physiology of the vestibular system, it is not possible to do this in a single test method.
The potential role of the vestibular system in anticipatory side effects suggests that antiemetics with a primary effect on the vestibular system (such as the antimotion drugs scopolamine or antihistamine class agents) might be effective in the control of anticipatory side effects for some patients.
These functional and structural alterations in patients with VM resemble those previously described in patients with migraine; therefore, it is possible that VM represents a pathophysiological connection between migraine and the vestibular system [78].
The vestibular system, located deep within the cat's inner ear, consists of three fluid-filled canals, along with receptors that connect to nerves leading to the medulla--a part of the brain situated at its base and attached to the front of the spinal cord.
AGEING Dizziness and unsteadiness are more likely when the eyes, vestibular system of the inner ear and muscles no longer work in harmony.
I'm not prone to seasickness, and it's impressive how quickly the vestibular system adjusts to the constant motion.
The vestibular system is part of the inner ear, which affords the brain information about three-dimensional orientation in space.
And outside the vestibular system, ocular motor impairments--such as impairments in eye tracking and movement--are also common, some experts say.
If the patient reaches the same visual acuity (or better) as their static visual acuity, the vestibular system is considered healthy.