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 ?
Her research explores the relationship between the cervical spine and the vestibular system with a focus on concussion, and she is a co-author on the International Consensus Statement on Concussion in Sport.
Mayadev assesses her patients, she pays special attention to their visual and vestibular systems, as well as to their proprioception--their ability to judge where their body is in space.
To accommodate the inadequacy of their visual capacities, individuals with visual impairments must rely on their somatosensory and vestibular systems to maintain balance and postural stability in everyday life, including physical activity (Pereira, 1990).
The vestibular system integrates information from the proprioceptors of the eyes and neck to determine the position of the head in space (Armstrong et al 2008) and the vestibulocollic reflex (VCR) can be considered the conduit for the transformation of vestibular signals into cervical movements.
Initial symptomatic improvement can occur with medications targeted at neurotransmitter targets within the vestibular system, such as antihistamines, anticholinergics, and benzodiazepines.
Future efforts should examine the effects of blast on the full range of vestibular system functions, including central processes.
The vestibular system may also be damaged by hazardous noise due to its close proximity and similarity in cell structure to the cochlea.
Our vestibular system, however, continues to fool us.
It can also cause brain damage, heart arrhythmia, central nervous system disorders, balance or vestibular system damage, and enduring psychological effects--most notably, suicidal ideations.
The condition is also more common in children aged between three and 12 years, possibly because their vestibular system has yet to mature.
Sound-evoked activation of the vestibular system and the resulting postural responses lead to increasing of the body sway in the coronal plane at low and middle frequencies and in the closed-eyes condition [12].
The vestibular system of each inner ear (semicircular canals, utricle and saccule) controls rotatory movements and orientation in, to and fro, up and down, and angular movements.