Quantifying the vestibulo-ocular reflex with video-oculography: nature and frequency of artifacts

Mantokoudis, Georgios; Saber Tehrani, Ali S; Kattah, Jorge C; Eibenberger, Karin; Guede, Cynthia I; Zee, David S; Newman-Toker, David E (2015). Quantifying the vestibulo-ocular reflex with video-oculography: nature and frequency of artifacts. Audiology & neuro-otology, 20(1), pp. 39-50. Karger 10.1159/000362780

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Video-oculography devices are now used to quantify the vestibulo-ocular reflex (VOR) at the bedside using the head impulse test (HIT). Little is known about the impact of disruptive phenomena (e.g. corrective saccades, nystagmus, fixation losses, eye-blink artifacts) on quantitative VOR assessment in acute vertigo. This study systematically characterized the frequency, nature, and impact of artifacts on HIT VOR measures. From a prospective study of 26 patients with acute vestibular syndrome (16 vestibular neuritis, 10 stroke), we classified findings using a structured coding manual. Of 1,358 individual HIT traces, 72% had abnormal disruptive saccades, 44% had at least one artifact, and 42% were uninterpretable. Physicians using quantitative recording devices to measure head impulse VOR responses for clinical diagnosis should be aware of the potential impact of disruptive eye movements and measurement artifacts.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)

UniBE Contributor:

Mantokoudis, Georgios

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1420-3030

Publisher:

Karger

Language:

English

Submitter:

Markus Huth

Date Deposited:

02 Mar 2016 14:37

Last Modified:

19 Jul 2016 15:10

Publisher DOI:

10.1159/000362780

PubMed ID:

25501133

BORIS DOI:

10.7892/boris.76309

URI:

https://boris.unibe.ch/id/eprint/76309

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