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Related Concept Videos

Equilibrium and Balance01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
The Vestibular System01:29

The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...
Indirect Motor Pathways01:22

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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

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Related Experiment Video

Updated: May 7, 2026

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

Bilateral vestibular loss.

Timothy C Hain1, Marcello Cherchi, Dario A Yacovino

  • 1Departments of Neurology, Otolaryngology, Physical therapy and Human Movement Science, Northwestern University, Chicago, Illinois.

Seminars in Neurology
|September 24, 2013
PubMed
Summary
This summary is machine-generated.

Bilateral vestibular loss causes vision problems and imbalance, often from gentamicin ototoxicity. Early diagnosis with the dynamic illegible E test prevents misdiagnosis as cerebellar syndrome.

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Surgical Labyrinthectomy of the Rat to Study the Vestibular System
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Last Updated: May 7, 2026

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

Surgical Labyrinthectomy of the Rat to Study the Vestibular System
04:03

Surgical Labyrinthectomy of the Rat to Study the Vestibular System

Published on: May 19, 2018

Area of Science:

  • Neurology
  • Ophthalmology
  • Ototolaryngology

Background:

  • Bilateral vestibular loss is a rare condition causing oscillopsia and imbalance.
  • Severe cases are frequently linked to iatrogenic gentamicin ototoxicity.
  • It can be misdiagnosed as cerebellar syndrome if not properly evaluated.

Purpose of the Study:

  • To highlight the diagnostic methods for bilateral vestibular loss.
  • To emphasize the importance of the dynamic illegible E test.
  • To discuss management strategies for this condition.

Main Methods:

  • Clinical diagnosis using the dynamic illegible E test at the bedside.
  • Review of common causes, particularly iatrogenic gentamicin ototoxicity.
  • Discussion of differential diagnosis, distinguishing from cerebellar syndromes.

Main Results:

  • The dynamic illegible E test is an effective bedside diagnostic tool.
  • Omission of this test can lead to misdiagnosis.
  • Gentamicin ototoxicity is a primary cause of severe bilateral vestibular loss.

Conclusions:

  • Bilateral vestibular loss requires prompt diagnosis, ideally via the dynamic illegible E test.
  • Supportive care and avoidance of ototoxic medications are crucial.
  • Encouraging patient activity aids in managing symptoms.