[THE VIDEO HEAD IMPULSE TEST (VHIT)].

Harefuah Pub Date : 2023-08-01
Nabil Faranesh, Avi Shupak
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Abstract

Introduction: The video head impulse test (vHIT) is a new tool in the vestibular tests' arsenal. It is based on the clinical Head Impulse Test, where the integrity of the vestibulo-ocular reflex is tested by high frequency excitation of the semi-circular canals. The vHIT system is composed of an accelerometer measuring the head movements, and a high frequency infra-red camera for eye tracking mounted on a light-weighted goggles. The main measures obtained are the vestibulo-ocular reflex gain - the ratio between the head and eye velocities, and the recording of corrective saccades taking place during the head movement (covered saccades) or following it (overt saccades).

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[视频头部脉冲测试(vhit)]。
视频头脉冲测试(vHIT)是前庭测试的新工具。它是基于临床头脉冲试验,其中前庭-眼反射的完整性是通过半圆形管的高频激发测试。vHIT系统由测量头部运动的加速度计和安装在轻型护目镜上用于眼球追踪的高频红外摄像机组成。获得的主要测量方法是前庭眼反射增益-头眼速度之比,以及记录在头部运动期间(隐蔽扫视)或之后(明显扫视)发生的纠正性扫视。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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