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Related Concept Videos

The Vestibular System01:29

The Vestibular System

45.0K
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.
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Equilibrium and Balance01:15

Equilibrium and Balance

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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...
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Anatomy of the Ear01:16

Anatomy of the Ear

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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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The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
52.4K
Auditory Perception01:17

Auditory Perception

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Related Experiment Video

Updated: Mar 23, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation
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Performing Intracochlear Electrocochleography During Cochlear Implantation

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Influence of cochlear implantation on vestibular function.

Xiulan Chen1, Xiaohua Chen1, Fan Zhang1

  • 1a The First Affiliated Hospital of Zhengzhou University , Zhengzhou , Henan , PR China.

Acta Oto-Laryngologica
|March 24, 2016
PubMed
Summary

Cochlear implantation can affect vestibular function, with significant decreases noted in implanted ears. Pre-operative assessment and minimally invasive techniques are crucial for preserving balance function after hearing restoration surgery.

Keywords:
Caloric testcervical vestibular-evoked myogenic potentialsochlear implantationocular vestibular-evoked myogenic potentialsvestibular symptoms

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Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
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Last Updated: Mar 23, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation
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Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
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Area of Science:

  • Otolaryngology
  • Neuroscience
  • Audiology

Background:

  • Cochlear implantation is a common treatment for severe to profound sensorineural hearing loss.
  • Vestibular system function can be impacted by cochlear implant surgery.
  • Understanding these impacts is vital for patient management and surgical technique refinement.

Purpose of the Study:

  • To evaluate the effect of cochlear implantation on vestibular function.
  • To analyze the correlation between vestibular test changes and post-operative symptoms.
  • To identify factors influencing vestibular function post-implantation.

Main Methods:

  • Evaluated 34 patients using cervical and ocular vestibular-evoked myogenic potentials (cVEMP and oVEMP).
  • Performed caloric tests on 29 patients pre-operatively and 4 weeks post-operatively.
  • Assessed vestibular function changes and correlated them with post-operative symptoms.

Main Results:

  • Post-implantation, 10 patients had absent cVEMPs and 7 had absent oVEMPs on the implanted side.
  • Caloric tests showed a significant decrease in vestibular function in the implanted ear.
  • Post-operative vestibular symptoms were transient and did not correlate with vestibular impairment.

Conclusions:

  • Cochlear implantation can impair vestibular function, particularly in the implanted ear.
  • Pre-operative vestibular assessment and minimally invasive surgical approaches are recommended.
  • Contralateral vestibular function remains unaffected by the implantation procedure.