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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.
The Cochlea01:13

The Cochlea

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.
Anatomy of the Ear01:16

Anatomy of the Ear

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: Jul 15, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation
09:10

Performing Intracochlear Electrocochleography During Cochlear Implantation

Published on: March 8, 2022

Paroxysmal positional vertigo after cochlear implantation.

Diego Zanetti1, Chiara Barbara Campovecchi, Cristiano Balzanelli

  • 1Otolaryngology Department, University of Brescia, Piazzale Spedali Civili 1, 5100 Brescia, Italy. diego_zanetti@iol.it

Acta Oto-Laryngologica
|April 25, 2007
PubMed
Summary

Paroxysmal positional vertigo (PPV) occurred in 12.5% of cochlear implant (CI) recipients, often relapsing but ultimately resolving with repositioning maneuvers. The condition did not impact speech perception outcomes post-implantation.

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Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
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Last Updated: Jul 15, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation
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Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
06:54

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Audiology

Background:

  • Cochlear implantation (CI) is a common procedure for hearing restoration.
  • Vestibular disturbances, including paroxysmal positional vertigo (PPV), can occur post-CI.
  • Understanding the incidence and characteristics of PPV after CI is crucial for patient management.

Purpose of the Study:

  • To report and discuss the occurrence of paroxysmal positional vertigo (PPV) following cochlear implantation (CI).
  • To analyze the incidence, timing, and management of PPV in CI recipients.

Main Methods:

  • A cohort of 32 adult patients receiving Nucleus CI was retrospectively analyzed.
  • Four patients developed PPV, diagnosed via Dix-Hallpike maneuvers.
  • Semont's repositioning maneuver was employed for treatment, with electro-nystagmography (ENG) used for assessment.

Main Results:

  • An incidence of 12.5% for PPV was observed among CI recipients, exceeding literature reports.
  • PPV manifested 1-12 months post-surgery, primarily affecting the posterior canal, and recurred within 3 months.
  • ENG revealed normal caloric irrigation in two patients and a prevalence towards the implanted side in the other two.

Conclusions:

  • PPV can occur in CI recipients without apparent anatomical abnormalities or surgical complications.
  • Recurrent PPV cases eventually resolved after a second repositioning maneuver.
  • The occurrence of PPV did not negatively affect speech perception outcomes in the studied patients.