Quantifying the vestibulo-ocular reflex with video-oculography: nature and frequency of artifacts
| Autor: | Ali S. Saber Tehrani, Karin Eibenberger, David S. Zee, David E. Newman-Toker, Jorge C. Kattah, Cynthia I. Guede, Georgios Mantokoudis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Eye Movements genetic structures Physiology 610 Medicine & health Nystagmus Audiology Speech and Hearing Humans Medicine Prospective Studies Head Impulse Test Vestibular Neuronitis Aged Aged 80 and over Video-oculography Eye Movement Measurements business.industry Eye movement Head impulse test Reflex Vestibulo-Ocular Middle Aged Sensory Systems Stroke Cross-Sectional Studies Otorhinolaryngology Fixation (visual) Reflex Female sense organs medicine.symptom Vestibulo–ocular reflex Artifacts business |
| Zdroj: | 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 Audiology Neurotology |
| DOI: | 10.7892/boris.76309 |
| Popis: | 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. i 2014 S. Karger AG, Basel |
| Databáze: | OpenAIRE |
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