Evaluation of Quantitative Head Impulse Testing Using Search Coils Versus Video-oculography in Older Individuals
نویسندگان
چکیده
منابع مشابه
Recording three-dimensional eye movements: scleral search coils versus video oculography.
PURPOSE This study compared the performance of a video-based infrared three-dimensional eye tracker device (Chronos) with the scleral search coil method. METHODS Three-dimensional eye movements were measured simultaneously with both systems during fixation, saccades, optokinetic stimulation, and vestibular stimulation. RESULTS Comparison of fixation positions between -15 degrees and +15 deg...
متن کاملRecording eye movements with video-oculography and scleral search coils: a direct comparison of two methods.
A video-based 2D eye-tracking system (EyeLink version 2.04, SR Research Ltd/SMI) was compared with the scleral search coil technique for its performance on recording the properties of fixations and saccadic eye movements. Fixation positions and saccadic properties (amplitude, duration, and peak velocity) were calculated independently from the data of the two systems that recorded eye positions ...
متن کاملAge dependent normal horizontal VOR gain of head impulse test as measured with video-oculography
BACKGROUND The head impulse test (HIT) is a recognised clinical sign of the high frequency vestibulo-ocular reflex (VOR), which can be quantified with video-oculography. This measures the VOR gain as the ratio of angular eye velocity to angular head velocity. Although normative data is available for VOR gain with video-oculography, most normal studies in general include small numbers of subject...
متن کاملVOR gain by head impulse video-oculography differentiates acute vestibular neuritis from stroke.
OBJECTIVE Vestibular neuritis is often mimicked by stroke (pseudoneuritis). Vestibular eye movements help discriminate the two conditions. We report vestibulo-ocular reflex (VOR) gain measures in neuritis and stroke presenting acute vestibular syndrome (AVS). METHODS Prospective cross-sectional study of AVS (acute continuous vertigo/dizziness lasting >24 h) at two academic centers. We measure...
متن کاملEvaluation of Bilateral Vestibular Dysfunction in Iranian Adults and Elderlies by Electronystagmography and Video Head Impulse Test
Introduction: Vestibular abnormalities are common problems in the whole world, which can lead to bilateral vestibular dysfunction (BVD). That results in symptoms, such as vertigo, unsteadiness, falling, oscillopsia, and lower quality of life. The Objective of this study was to determine BVD in adults and elderlies with vertigo and unsteadiness. Materials and Methods: This study was conducted ...
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ژورنال
عنوان ژورنال: Otology & Neurotology
سال: 2014
ISSN: 1531-7129
DOI: 10.1097/mao.0b013e3182995227