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Updated: Jun 18, 2026

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
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Subjective visual vertical in patients with ear surgery.

Yasuo Ogawa1, Mami Hayashi, Koji Otsuka

  • 1Department of Otorhinolaryngology, Tokyo Medical University, Japan. y-ogawa8@tokyo-med.ac.jp

Acta Oto-Laryngologica
|December 5, 2009
PubMed
Summary

Ear surgery can cause dysequilibrium. The subjective visual vertical (SVV) test effectively evaluates otolithic function after ear surgery, showing shifts toward the operated or healthy side depending on the procedure.

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Area of Science:

  • Otolaryngology
  • Neurotology
  • Vestibular System Physiology

Background:

  • Dysequilibrium is a significant complication following ear surgery.
  • Otolithic organ function is crucial for maintaining balance.
  • Accurate assessment of otolithic function post-surgery is clinically important.

Purpose of the Study:

  • To examine the impact of diverse ear surgical procedures on otolithic organ function.
  • To assess the utility of the subjective visual vertical (SVV) test in evaluating post-ear surgery otolithic status.

Main Methods:

  • Seventy-one patients undergoing various ear surgeries were included.
  • Subjective visual vertical (SVV) testing was conducted pre- and post-operatively.
  • Directional changes in SVV were analyzed to determine effects on otolithic function.

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Last Updated: Jun 18, 2026

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
06:30

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Published on: April 28, 2020

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
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Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Published on: May 23, 2013

Main Results:

  • Postoperative SVV shifts varied based on surgical approach.
  • Two patients undergoing translabyrinthine vestibular schwannoma removal showed SVV shift towards the operated side.
  • Other surgical procedures generally resulted in an SVV shift towards the healthy side.

Conclusions:

  • Dysequilibrium is a key side effect of ear surgery.
  • The subjective visual vertical (SVV) test serves as a valuable tool for assessing otolithic function in patients post-ear surgery.
  • SVV directional changes correlate with specific surgical interventions, aiding in understanding post-operative vestibular outcomes.