Clinical applications of correlational vestibular autorotation test

Li Chun Hsieh, Te Ming Lin, Yu Min Chang, Terry B.J. Kuo, Gho She Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Conclusion: The correlational vestibular autorotation test (VAT) system has the advantages of good test-retest reliability and calibrations of absolute degrees of eye movement are unnecessary when acquiring a cross correlation coefficient (CCC). The approach is able to efficiently detect peripheral vestibulopathies. Objective: A VAT has some drawbacks including poor test-retest reliability and slippage of sensor. This study aimed to develop a correlational VAT system and to evaluate the reliability and applicability of this system. Methods: Twenty healthy participants and 10 vertiginous patients were enrolled. Vertical and horizontal autorotations from 0 to 3 Hz with either closed or open eyes were performed. A small sensor and a wireless transmission technique were used to acquire the electro-ocular graph and head velocity signals. The two signals were analyzed using CCCs to assess the functioning of the vestibular ocular reflex (VOR). Results: The results showed a significantly greater CCC for open-eye versus closed-eye of head autorotations. The CCCs also increased significantly with head rotational frequencies. Moreover, the CCCs significantly correlated with the VOR gains at autorotation frequencies ≥1.0 Hz. The test-retest reliability was good (intraclass correlation coefficients ≥0.85). The vertiginous participants had significantly lower individual CCCs and overall average CCC than age-and-gender matched controls.

Original languageEnglish
Pages (from-to)549-556
Number of pages8
JournalActa Oto-Laryngologica
Volume135
Issue number6
DOIs
Publication statusPublished - Jun 1 2015
Externally publishedYes

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Keywords

  • Cross correlational analysis
  • Electro-oculography
  • Gyrometry
  • Intraclass correlation

ASJC Scopus subject areas

  • Otorhinolaryngology

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