Computerized rotational vestibular testing in normal subjects

Yuh Y. Su, Wen Y. Chiou, Ping K. Weng, Hsing W. Wang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Background: As an integral part of the contemporary vestibular testing battery, computerized vestibular rotational testing provides physiologic stimuli and quantitative evaluation of the vestibulo-ocular reflex function of the horizontal semicircular canals. Clinically, it is most commonly used in the sinusoidal harmonic acceleration test (SHAT) and velocity step test. Because the results for a given subject may vary when tested using different facilities, the purpose of this study is to establish the normative data for our laboratory. Methods: Fifty-six normal subjects underwent the SHAT and velocity step test. Three parameters of SHAT - gain, phase and symmetry - were measured and recorded at 0.02, 0.05, 0.09 and 0.10 Hz. In the velocity step test, the three parameters of postrotatory nystagmus-time constant, maximum slow component eye velocity and directional preponderance were measured and recorded. Results: The means ± standard deviations of gain in the SHAT were 0.47 ± 0.16 at 0.02 Hz, 0.50 ± 0.16 at 0.05 Hz, 0.50 ± 0.16 at 0.09 Hz and 0.53 ± 0.17 at 0.10 Hz. The coefficient of variation for SHAT gain was 0.32. The time constant means and standard deviations in the velocity step test were 13.44 ± 3.53 and 13.52 ± 3.69 for clockwise and counterclockwise rotations, respectively. Conclusions: We conclude that computerized rotational vestibular testing is precise.

Original languageEnglish
Pages (from-to)377-383
Number of pages7
JournalChinese Medical Journal (Taipei)
Volume63
Issue number5
Publication statusPublished - May 2000
Externally publishedYes

Fingerprint

Exercise Test
Vestibulo-Ocular Reflex
Semicircular Canals

Keywords

  • Computerized rotational testing
  • Sinusoidal harmonic acceleration test
  • Velocity step test

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Computerized rotational vestibular testing in normal subjects. / Su, Yuh Y.; Chiou, Wen Y.; Weng, Ping K.; Wang, Hsing W.

In: Chinese Medical Journal (Taipei), Vol. 63, No. 5, 05.2000, p. 377-383.

Research output: Contribution to journalArticle

Su, Yuh Y. ; Chiou, Wen Y. ; Weng, Ping K. ; Wang, Hsing W. / Computerized rotational vestibular testing in normal subjects. In: Chinese Medical Journal (Taipei). 2000 ; Vol. 63, No. 5. pp. 377-383.
@article{dbc5fc68e9c941b6b8eb5daa728156f0,
title = "Computerized rotational vestibular testing in normal subjects",
abstract = "Background: As an integral part of the contemporary vestibular testing battery, computerized vestibular rotational testing provides physiologic stimuli and quantitative evaluation of the vestibulo-ocular reflex function of the horizontal semicircular canals. Clinically, it is most commonly used in the sinusoidal harmonic acceleration test (SHAT) and velocity step test. Because the results for a given subject may vary when tested using different facilities, the purpose of this study is to establish the normative data for our laboratory. Methods: Fifty-six normal subjects underwent the SHAT and velocity step test. Three parameters of SHAT - gain, phase and symmetry - were measured and recorded at 0.02, 0.05, 0.09 and 0.10 Hz. In the velocity step test, the three parameters of postrotatory nystagmus-time constant, maximum slow component eye velocity and directional preponderance were measured and recorded. Results: The means ± standard deviations of gain in the SHAT were 0.47 ± 0.16 at 0.02 Hz, 0.50 ± 0.16 at 0.05 Hz, 0.50 ± 0.16 at 0.09 Hz and 0.53 ± 0.17 at 0.10 Hz. The coefficient of variation for SHAT gain was 0.32. The time constant means and standard deviations in the velocity step test were 13.44 ± 3.53 and 13.52 ± 3.69 for clockwise and counterclockwise rotations, respectively. Conclusions: We conclude that computerized rotational vestibular testing is precise.",
keywords = "Computerized rotational testing, Sinusoidal harmonic acceleration test, Velocity step test",
author = "Su, {Yuh Y.} and Chiou, {Wen Y.} and Weng, {Ping K.} and Wang, {Hsing W.}",
year = "2000",
month = "5",
language = "English",
volume = "63",
pages = "377--383",
journal = "Journal of the Chinese Medical Association",
issn = "1726-4901",
publisher = "Elsevier Taiwan LLC",
number = "5",

}

TY - JOUR

T1 - Computerized rotational vestibular testing in normal subjects

AU - Su, Yuh Y.

AU - Chiou, Wen Y.

AU - Weng, Ping K.

AU - Wang, Hsing W.

PY - 2000/5

Y1 - 2000/5

N2 - Background: As an integral part of the contemporary vestibular testing battery, computerized vestibular rotational testing provides physiologic stimuli and quantitative evaluation of the vestibulo-ocular reflex function of the horizontal semicircular canals. Clinically, it is most commonly used in the sinusoidal harmonic acceleration test (SHAT) and velocity step test. Because the results for a given subject may vary when tested using different facilities, the purpose of this study is to establish the normative data for our laboratory. Methods: Fifty-six normal subjects underwent the SHAT and velocity step test. Three parameters of SHAT - gain, phase and symmetry - were measured and recorded at 0.02, 0.05, 0.09 and 0.10 Hz. In the velocity step test, the three parameters of postrotatory nystagmus-time constant, maximum slow component eye velocity and directional preponderance were measured and recorded. Results: The means ± standard deviations of gain in the SHAT were 0.47 ± 0.16 at 0.02 Hz, 0.50 ± 0.16 at 0.05 Hz, 0.50 ± 0.16 at 0.09 Hz and 0.53 ± 0.17 at 0.10 Hz. The coefficient of variation for SHAT gain was 0.32. The time constant means and standard deviations in the velocity step test were 13.44 ± 3.53 and 13.52 ± 3.69 for clockwise and counterclockwise rotations, respectively. Conclusions: We conclude that computerized rotational vestibular testing is precise.

AB - Background: As an integral part of the contemporary vestibular testing battery, computerized vestibular rotational testing provides physiologic stimuli and quantitative evaluation of the vestibulo-ocular reflex function of the horizontal semicircular canals. Clinically, it is most commonly used in the sinusoidal harmonic acceleration test (SHAT) and velocity step test. Because the results for a given subject may vary when tested using different facilities, the purpose of this study is to establish the normative data for our laboratory. Methods: Fifty-six normal subjects underwent the SHAT and velocity step test. Three parameters of SHAT - gain, phase and symmetry - were measured and recorded at 0.02, 0.05, 0.09 and 0.10 Hz. In the velocity step test, the three parameters of postrotatory nystagmus-time constant, maximum slow component eye velocity and directional preponderance were measured and recorded. Results: The means ± standard deviations of gain in the SHAT were 0.47 ± 0.16 at 0.02 Hz, 0.50 ± 0.16 at 0.05 Hz, 0.50 ± 0.16 at 0.09 Hz and 0.53 ± 0.17 at 0.10 Hz. The coefficient of variation for SHAT gain was 0.32. The time constant means and standard deviations in the velocity step test were 13.44 ± 3.53 and 13.52 ± 3.69 for clockwise and counterclockwise rotations, respectively. Conclusions: We conclude that computerized rotational vestibular testing is precise.

KW - Computerized rotational testing

KW - Sinusoidal harmonic acceleration test

KW - Velocity step test

UR - http://www.scopus.com/inward/record.url?scp=0034080574&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034080574&partnerID=8YFLogxK

M3 - Article

VL - 63

SP - 377

EP - 383

JO - Journal of the Chinese Medical Association

JF - Journal of the Chinese Medical Association

SN - 1726-4901

IS - 5

ER -