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Related Experiment Video

Updated: Jul 2, 2025

Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
08:38

Testing of all Six Semicircular Canals with Video Head Impulse Test Systems

Published on: April 18, 2019

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The vertical computerized rotational head impulse test.

Joseph M Furman1, Ian Shirey2, Jillyn Roxberg1

  • 1Department of Otolaryngology, University of Pittsburgh, Pittsburgh, PA, USA.

Journal of Vestibular Research : Equilibrium & Orientation
|February 23, 2024
PubMed
Summary
This summary is machine-generated.

Computerized rotational head impulse test (crHIT) now assesses vertical semicircular canals. This vestibular test proved well-tolerated and effective for all six canals in a preliminary study.

Keywords:
Vestibular testinglabyrinthsemicircular canal

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Last Updated: Jul 2, 2025

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Area of Science:

  • Neuroscience
  • Otolaryngology
  • Vestibular System Diagnostics

Background:

  • The computerized rotational head impulse test (crHIT) is established for assessing horizontal semicircular canals.
  • Current crHIT protocols have not been described for vertical head plane rotations.

Purpose of the Study:

  • To describe and evaluate the computerized rotational head impulse test (crHIT) for vertical head plane rotations.
  • To assess the feasibility and tolerance of crHIT in vertical planes.

Main Methods:

  • Preliminary study involving four patients with unilateral peripheral vestibular abnormalities and two control subjects.
  • Utilized a computer-controlled rotational chair to deliver whole-body rotational impulses for vertical head plane testing.
  • Assessed tolerance and efficacy of crHIT for both horizontal and vertical stimuli.

Main Results:

  • The computerized rotational head impulse test (crHIT) was well-tolerated in both horizontal and vertical head planes.
  • The crHIT successfully assessed all six semicircular canals.
  • Demonstrated feasibility for vertical plane vestibular assessment.

Conclusions:

  • The computerized rotational head impulse test (crHIT) can be extended to assess vertical semicircular canals.
  • crHIT shows potential as a comprehensive laboratory-based vestibular test for both horizontal and vertical canal function.
  • Further validation is warranted for clinical application.