Ethanol-induced Vestibular Dysfunction as a Model for Bilateral Vestibular Syndrome.
vHIT- and VOG-model for Bilateral Vestibular NeuronitisThe purpose of the study is to create a vHIT- and VOG-model for bilateral vestibular neuronitis, via ethanol administration in healthy human subjects.
Clinical Evaluation of a Novel Balance, Vestibular and Oculomotor Assessment Tool
Mild ConcussionPost Concussion Syndrome1 moreThe iDETECT (Integrated Display Enhanced Testing for Concussion and mild traumatic brain injury) system is a novel portable, open access platform that enables immediate and rapid assessment of multimodal neurologic function. This study seeks to evaluate the iDETECT function testing battery with currently used balance and inner ear assessment methods during initial concussion clinic referral. Two groups of participants will be enrolled; a concussion related dizziness cohort and control subjects. The investigators will enroll the concussion cohort from patients presenting to the Sports Concussion Institute (SCI) with persistent dizziness and imbalance symptoms following possible concussion. Healthy control participants will be recruited from the local community. iDETECT's ability to identify post concussion balance/vestibular disturbances will be compared to an expert concussion assessment. Both cohorts will participate in the iDETECT assessment and the clinical assessment.
MRIPositive Diagnosis of Vestibular Neuritis Using Fluid Attenuated Inversion Recuperation (FLAIR)...
Vestibular NeuritisOur objective is to allow positive MRI diagnosis of vestibular neuritis by highlighting contrast enhancement of the vestibular nerve on the pathological side of the FLAIR sequence acquired 1h after intravenous gadolinium injection in patients with typical vestibular neuritis. At present, the diagnosis is based on a combination clinical examination / video-head impulse test, and no imaging examination allows the diagnosis to be positive.
Metabolic Disorders and Vertigo
Benign Paroxysmal Positional Vertigo (BPPV)Vestibular Migraine3 moreThe purpose of investigation is to assess the levels of metabolic factors (hydroxyvitamin D, homocysteine) between patients with vestibular dysfunction of peripheral origin (BPPV) and central origin (vestibular migraine). Also we will analyse another factors (such as anxiety and depression) and optimize therapeuthical approach accordingly with the data.
CAVA: Dizziness Trial
Meniere's DiseaseBenign Paroxysmal Positional Vertigo2 moreClinical investigation of a medical device (CAVA) for recording eye movements. Patients suffering from diagnosed dizziness conditions will wear the device for 23 hours a day, for 30 days. The device will capture normal eye movement data as well as data corresponding to any dizzy events experienced. At the end of the trial, the data will be downloaded and a scientist will perform a blinded analysis of the data. Specifically, they will attempt to identify the dates on which dizziness was reported.
Vestibular System in Migrainous Vertigo Patients
Migraine DisordersMigraine Variant1 moreDo migrainous vertigo patients have more pathology in their vestibular system than migraine patients without vertigo? The aim of this study is to compare the vestibular system of migraine patients with and without vertigo in the symptom-free period by vestibular function tests, videonystagmography, vestibular evoked myogenic potentials, and subjective visual vertical.
Prevalence of Cardiovascular Risk Factors in Upper Vestibular Neuritis
Vestibular NeuritisVestibular neuritis is the second cause of vertigo, it constitutes 5 to 6% of the aetiologies of vertigo in an otoneurological consultation. Infection or reactivation of a neurotropic virus of the herpes group (HSV-1) in the vestibular lymph node is thought to be the cause of the unilateral vestibular deficit. Upper vestibular neuritis is more common than lower, or total involvement. Goebel (2) explains this by an anatomical predisposition of the vestibular nerve canal to inflammation, unlike the singular nerve canal which is shorter and wider giving way to a certain degree of edema without consequence on its contents. However, the innervation territory of the superior vestibular nerve is superimposable on the territory supplied by the anterior vestibular artery. The anterior, lateral semicircular canals and the utricle are affected. Current complementary vestibular and imaging examinations cannot differentiate between inflammatory or vascular involvement in upper vestibular neuritis. The increased presence of cardiovascular risk factors in patients with upper vestibular neuritis would be an argument in favor of ischemic involvement of the anterior vestibular artery.