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Head Impulse Testing Using Video‐oculography
Author(s) -
Bartl Klaus,
Lehnen Nadine,
Kohlbecher Stefan,
Schneider Erich
Publication year - 2009
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2009.03850.x
Subject(s) - semicircular canal , medicine , reflex , search coil , head (geology) , audiology , vestibular system , physics , anesthesia , magnetic flux , quantum mechanics , magnetic field , geomorphology , geology
Head impulses are a routine clinical test of semicircular canal function. At the bedside, they are used to detect malfunctioning of the horizontal semicircular canals. So far, 3‐D‐search‐coil recording is required to reliably test anterior and posterior canal function and to determine the gain of the vestibulo‐ocular reflex (VOR). Search‐coil recording cannot be done at the bedside. Here we tested whether video‐oculography (VOG) is suitable to assess VOR gain for individual canals at the bedside. We recorded head impulses in healthy subjects using a mobile high‐frame‐rate, head‐mounted VOG‐device and compared the results with those obtained with standard search‐coil recording. Our preliminary results indicate that high‐frame‐rate VOG is a promising tool to measure and quantify individual semicircular canal function not only at the bedside.