TY - JOUR
T1 - A device for the functional evaluation of the VOR in clinical settings
AU - Ramat, Stefano
AU - Colnaghi, Silvia
AU - Boehler, Andreas
AU - Astore, Serena
AU - Falco, Paola
AU - Mandalà, Marco
AU - Nuti, Daniele
AU - Colagiorgio, Paolo
AU - Versino, Maurizio
PY - 2012
Y1 - 2012
N2 - We developed the head impulse testing device (HITD) based on an inertial sensing system allowing to investigate the functional performance of the rotational vestibulo-ocular reflex (VOR) by testing its gaze stabilization ability, independently from the subject's visual acuity, in response to head impulses at different head angular accelerations ranging from 2000 to 7000 deg/s2. HITD was initially tested on 22 normal subjects, and a method to compare the results from a single subject (patient) with those from controls was set up. As a pilot study, we tested the HITD in 39 dizzy patients suffering, non-acutely, from different kinds of vestibular disorders. The results obtained with the HITD were comparable with those from the clinical head impulse test (HIT), but an higher number of abnormalities was detectable by HITD in the central vestibular disorders group. The HITD appears to be a promising tool for detecting abnormal VOR performance while providing information on the functional performance of the rotational VOR, and can provide a valuable assistance to the clinical evaluation of patients with vestibular disorders.
AB - We developed the head impulse testing device (HITD) based on an inertial sensing system allowing to investigate the functional performance of the rotational vestibulo-ocular reflex (VOR) by testing its gaze stabilization ability, independently from the subject's visual acuity, in response to head impulses at different head angular accelerations ranging from 2000 to 7000 deg/s2. HITD was initially tested on 22 normal subjects, and a method to compare the results from a single subject (patient) with those from controls was set up. As a pilot study, we tested the HITD in 39 dizzy patients suffering, non-acutely, from different kinds of vestibular disorders. The results obtained with the HITD were comparable with those from the clinical head impulse test (HIT), but an higher number of abnormalities was detectable by HITD in the central vestibular disorders group. The HITD appears to be a promising tool for detecting abnormal VOR performance while providing information on the functional performance of the rotational VOR, and can provide a valuable assistance to the clinical evaluation of patients with vestibular disorders.
KW - Dynamic visual acuity
KW - Head impulse test
KW - Rvor
KW - Semicircular canals
KW - VOR testing
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U2 - 10.3389/fneur.2012.00039
DO - 10.3389/fneur.2012.00039
M3 - Article
C2 - 22470364
AN - SCOPUS:84865858434
VL - MAR
JO - Frontiers in Neurology
JF - Frontiers in Neurology
SN - 1664-2295
M1 - Article 39
ER -