Utility of headshake versus whole-body VOR evaluation during routine electronystagmography

J. A. Goebel, D. P. Rowdon

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Evaluation of the vestibulo-ocular reflex (VOR) by caloric testing yields important localizing information, but does not examine the entire frequency spectrum of vestibular function. With the addition of head rotation at 0.5 Hz (50 deg/s) and a velocity sensor to measure head movement, additional unique information regarding higher frequency VOR function can be readily obtained using standard electro-oculography (EOG). Over the past 4 years, active head-on-body and passive whole-body rotation testing with four-channel strip-chart recording and hand analysis have been routinely performed on every patient referred for caloric testing. In 95 percent of cases with normal symmetric caloric responses, headshake VOR gain with either stimulus was normal (>0.51). Similarly, more than 95 percent of patients with unilateral deficits on caloric testing yielded normal rotational VOR gains. In contrast, roughly one third of patients with bilaterally reduced caloric responses demonstrated both abnormally low active headshake and passive whole-body rotational gain (<0.5). It appears, therefore, that both active head-on-body and passive whole-body rotation VOR testing at 0.5 Hz are possible using standard recording techniques, and yield valuable added information in cases with reduced bilateral caloric responses.

Original languageEnglish
Pages (from-to)249-253
Number of pages5
JournalAmerican Journal of Otology
Volume13
Issue number3
StatePublished - Jan 1 1992

Fingerprint Dive into the research topics of 'Utility of headshake versus whole-body VOR evaluation during routine electronystagmography'. Together they form a unique fingerprint.

  • Cite this