Front Neurol. 2018 Feb 12;9:69. doi: 10.3389/fneur.2018.00069. eCollection 2018.
Mathematical Methods for Measuring the Visually Enhanced Vestibulo-Ocular Reflex and Preliminary Results from Healthy Subjects and Patient Groups.
Frontiers in neurology
Jorge Rey-Martinez, Angel Batuecas-Caletrio, Eusebi Matiño, Gabriel Trinidad-Ruiz, Xabier Altuna, Nicolas Perez-Fernandez
Affiliations
Affiliations
- Otorhinolaringology, Hospital Universitario Donostia, San Sebastian, Spain.
- Complejo Hospitalario de Salamanca, Salamanca, Spain.
- Hospital General de Catalunya, Barcelona, Spain.
- University Hospital of Badajoz, Badajoz, Spain.
- Clínica Universidad de Navarra, Madrid, Spain.
PMID: 29483893
PMCID: PMC5816338 DOI: 10.3389/fneur.2018.00069
Abstract
BACKGROUND: Visually enhanced vestibulo-ocular reflex (VVOR) is a well-known bedside clinical test to evaluate visuo-vestibular interaction, with clinical applications in patients with neurological and vestibular dysfunctions. Owing to recently developed diagnostic technologies, the possibility to perform an easy and objective measurement of the VVOR has increased, but there is a lack of computational methods designed to obtain an objective VVOR measurement.
OBJECTIVES: To develop a method for the assessment of the VVOR to obtain a gain value that compares head and eye velocities and to test this method in patients and healthy subjects.
METHODS: Two computational methods were developed to measure the VVOR test responses: the first method was based on the area under curve of head and eye velocity plots and the second method was based on the slope of the linear regression obtained for head and eye velocity data. VVOR gain and vestibulo-ocular reflex (VOR) gain were analyzed with the data obtained from 35 subjects divided into four groups: healthy (
RESULTS: Intra-class correlation index for the two developed VVOR analysis methods was 0.99. Statistical differences were obtained by analysis of variance statistical method, comparing the healthy group (VVOR mean gain of 1 ± 0) with all other groups. The CANVAS group exhibited (VVOR mean gain of 0.4 ± 0.1) differences when compared to all other groups. VVOR mean gain for the vestibular bilateral group was 0.8 ± 0.1. VVOR mean gain in the unilateral group was 0.6 ± 0.1, with a Pearson's correlation of 0.52 obtained when VVOR gain was compared to the VOR gain of the operated side.
CONCLUSION: Two computational methods to measure the gain of VVOR were successfully developed. The VVOR gain values appear to objectively characterize the VVOR alteration observed in CANVAS patients, and also distinguish between healthy subjects and patients with some vestibular disorders.
Keywords: CANVAS; Visually enhanced VOR; algorithms; dessaccade; gain; vestibular schwannoma; vestibulo–ocular reflex; video head impulse test; visual–vestibular interaction
References
- Brain. 1991 Feb;114 ( Pt 1A):1-11 - PubMed
- Vision Res. 1997 Jun;37(12):1643-52 - PubMed
- Arch Otolaryngol Head Neck Surg. 2002 Sep;128(9):1044-54 - PubMed
- Neurology. 2009 Oct 6;73(14):1134-41 - PubMed
- Vision Res. 1985;25(4):561-3 - PubMed
- Brain. 2004 Feb;127(Pt 2):280-93 - PubMed
- Lancet. 1986 Feb 8;1(8476):307-10 - PubMed
- Ann N Y Acad Sci. 2009 May;1164:486-91 - PubMed
- Front Neurol. 2015 Jul 08;6:154 - PubMed
- Neuroreport. 2004 Dec 3;15(17):2617-20 - PubMed
- Otol Neurotol. 2015 Mar;36(3):466-71 - PubMed
- Brain Struct Funct. 2017 Jul;222(5):2329-2343 - PubMed
- Neurology. 2013 Oct 29;81(18):1642-3 - PubMed
- Audiol Neurootol. 2015;20(1):39-50 - PubMed
- PLoS One. 2013 Apr 22;8(4):e61488 - PubMed
- J Vestib Res. 1994 May-Jun;4(3):245-9 - PubMed
- Neurol Clin Pract. 2016 Feb;6(1):61-68 - PubMed
- Arch Neurol. 1988 Jul;45(7):737-9 - PubMed
- Can Assoc Radiol J. 2003 Apr;54(2):80-6 - PubMed
- Exp Brain Res. 1999 Jul;127(1):54-66 - PubMed
- Biol Cybern. 1986;55(1):43-57 - PubMed
- Clin Neurophysiol. 2016 Aug;127(8):2791-801 - PubMed
- Int J Pediatr Otorhinolaryngol. 2008 Jan;72(1):1-7 - PubMed
- Eur Arch Otorhinolaryngol. 2017 Mar;274(3):1215-1222 - PubMed
- Handb Clin Neurol. 2016;137:1-16 - PubMed
- Brain Res. 1986 May 14;373(1-2):399-408 - PubMed
- Otolaryngol Head Neck Surg. 1995 Jan;112(1):16-35 - PubMed
- J Neurol. 2017 Jan;264(1):188-203 - PubMed
- Laryngoscope. 2006 Sep;116(9):1577-9 - PubMed
- Rev Neurol (Paris). 2012 Oct;168(10):710-9 - PubMed
- Exp Brain Res. 1994;98(2):355-72 - PubMed
Publication Types