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Journal of Vestibular Research: Equilibrium & Orientation

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https://www.readbyqxmd.com/read/29689764/a-speed-based-approach-to-vestibular-rehabilitation-for-peripheral-vestibular-hypofunction-a-retrospective-chart-review
#1
Robert Alan Roller, Courtney D Hall
BACKGROUND: Current vestibular rehabilitation for peripheral vestibular hypofunction is an exercise-based approach that improves symptoms and function in most, but not all patients, and includes gaze stabilization exercises focused on duration of head movement. One factor that may impact rehabilitation outcomes is the speed of head movement during gaze stability exercises. OBJECTIVE: Examine outcomes of modified VOR X1 exercises that emphasize a speed-based approach for gaze stabilization while omitting substitution and habituation exercises...
April 18, 2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29689763/relationship-between-motion-sickness-susceptibility-and-vestibulo-ocular-reflex-gain-and-phase
#2
Gilles Clément, Millard F Reschke
BACKGROUND: It has been proposed that individual susceptibility to motion sickness is related to the vestibulo-ocular reflex (VOR) through the activation of the velocity storage mechanism. OBJECTIVE: We investigated whether motion sickness level was related to the gain and phase of the VOR. METHODS: VOR gain and phase were measured in 214 subjects while they rotated in yaw at 0.01 Hz, 0.02 Hz, 0.04 Hz, 0.08 Hz, and 0.16 Hz in darkness, and results were compared to the severity of symptoms the subjects experienced during subsequent tests to provoke motion sickness...
April 18, 2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29400689/effect-of-spaceflight-on-the-spatial-orientation-of-the-vestibulo-ocular-reflex-during-eccentric-roll-rotation-a-case-report
#3
Millard F Reschke, Scott J Wood, Gilles Clément
BACKGROUND: Ground-based studies have reported shifts of the vestibulo-ocular reflex (VOR) slow phase velocity (SPV) axis toward the resultant gravito-inertial force vector. The VOR was examined during eccentric roll rotation before, during and after an 8-day orbital mission. On orbit this vector is aligned with the head z-axis. Our hypothesis was that eccentric roll rotation on orbit would generate horizontal eye movements. METHODS: Two subjects were rotated in a semi-supine position with the head nasal-occipital axis parallel to the axis of rotation and 0...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29400688/treatment-of-vestibular-disorders-with-weak-asymmetric-base-in-prisms-an-hypothesis-with-a-focus-on-m%C3%A3-ni%C3%A3-re-s-disease
#4
Jelte E Bos, Astrid J A Lubeck, P Eric M Vente
BACKGROUND: Regular treatments of Ménière's disease (MD) vary largely, and no single satisfactory treatment exists. A complementary treatment popular among Dutch and Belgian patients involves eyeglasses with weak asymmetric base-in prisms, with a perceived high success rate. An explanatory mechanism is, however, lacking. OBJECTIVE: To speculate on a working mechanism explaining an effectiveness of weak asymmetric base-in prims in MD, based on available knowledge...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29400687/vergence-increases-the-gain-of-the-human-angular-vestibulo-ocular-reflex-during-peripheral-hyposensitivity-elicited-by-cold-thermal-irrigation
#5
László T Tamás, Yunxia W Lundberg, Béla Büki
BACKGROUND: When viewing a far target, the gain of the horizontal vestibulo-ocular reflex (VOR) is around 1.0, but when viewing a near target there is an increased response. It has been shown that while this convergence-mediated modulation is unaffected by canal plugging and clinically practical transmastoid galvanic stimulation, it is eliminated by a partial peripheral gentamicin lesion. OBJECTIVE: The aim of this study was to determine if convergence increases the gain during peripheral hyposensitivity elicited by cold thermal irrigation...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29400686/prehab-vs-rehab-presurgical-treatment-in-vestibular-schwannoma-surgery-enhances-recovery-of-postural-control-better-than-postoperative-rehabilitation-retrospective-case-series
#6
Fredrik Tjernström, Per-Anders Fransson, Babar Kahlon, Mikael Karlberg, Sven Lindberg, Peter Siesjö, Måns Magnusson
OBJECT: To evaluate post-surgical postural stability when treating patients with remaining vestibular function with intratympanic gentamicin (PREHAB) prior to schwannoma surgery. METHOD: 44 consecutive patients with some form remaining vestibular function scheduled for vestibular schwannoma surgery. 20 were medically deafferented with intratympanic gentamicin before surgery and 24 were not. Both groups were of the same age, had the same tumor size, same type of surgery, and same perioperative sensory rehabilitation (training exercises), and no surgical complications...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29400685/bone-mineral-density-and-serum-25-hydroxyvitamin-d-in-patients-with-idiopathic-benign-paroxysmal-positional-vertigo
#7
Chan Joo Yang, Yehree Kim, Hwan Seo Lee, Hong Ju Park
The aim of this study was to evaluate the relationship between bone mineral density (BMD) and 25-hydroxyvitamin D with the occurrence and recurrence of BPPV. The records of 130 idiopathic BPPV patients (55±12 years old, 30 men and 100 women) and 130 age- and sex-matched controls who underwent bone mineral densitometry between April 2012 and September 2015 were reviewed retrospectively. We compared the BMD and serum 25-hydroxyvitamin D between the patients and controls, and also compared the BMD between recurrent and non-recurrent BPPV groups...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29400684/visual-dependence-and-spatial-orientation-in-benign-paroxysmal-positional-vertigo
#8
Maitreyi A Nair, Ajitkumar P Mulavara, Jacob J Bloomberg, Haleh Sangi-Haghpeykar, Helen S Cohen
People with benign paroxysmal positional vertigo (BPPV) probably have otoconial particles displaced from the utricle into the posterior semicircular canal. This unilateral change in the inertial load distributions of the labyrinth may result in visual dependence and may affect balance control. The goal of this study was to explore the interaction between visual dependence and balance control. We compared 23 healthy controls to 17 people with unilateral BPPV on the Clinical Test of Sensory Interaction and Balance on compliant foam with feet together, the Rod-and-Frame Test and a Mental Rotation Test...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29125531/posturographic-pattern-of-patients-with-chronic-subjective-dizziness-before-and-after-vestibular-rehabilitation
#9
Benoît Morisod, Maxime Mermod, Raphaël Maire
INTRODUCTION: Chronic subjective dizziness (CSD) is frequently encountered in neurotology clinics. This diagnosis is mainly clinical, but computerized dynamic posturography (CDP) could be a helpful instrumental tool in the identification of these patients and validation of the treatment. This study was aimed to look for a specific posturographic pattern among patients diagnosed with CSD, and to eventually visualize improvement after vestibular rehabilitation. METHODS: Single center, retrospective review from 2009 to 2014...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29125530/the-impact-of-symptoms-of-anxiety-and-depression-on-subjective-and-objective-outcome-measures-in-individuals-with-vestibular-disorders
#10
Sara G MacDowell, Rachel Wellons, Ashlen Bissell, Lisa Knecht, Caitlin Naquin, Aryn Karpinski
BACKGROUND: Anxiety and depression are common in individuals with vestibular disorders and anecdotally symptoms of these disorders have been associated with poorer scores on subjective outcome measures of dizziness and balance. It is unknown if symptoms of psychological distress impact individual outcomes with vestibular rehabilitation therapy (VRT). OBJECTIVE: To compare subjective and objective outcome measures in subjects with vestibular disorders who have symptoms of anxiety and/or depression to those who do not exhibit those symptoms...
2018: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29154301/a-closer-look-at-subjective-caloric-sensations-is-there-more-to-vertigo-than-spinning
#11
Tamara Mijovic, Andrew Remillard, Erica Helena Zaia, Yvette Marie Reid, Jolene Kim Harrington, Brian David Westerberg, Jane Lea
BACKGROUND: There is a prevailing opinion that spinning sensations signify a peripheral vestibular pathology while non-spinning sensations are not of vestibular origin. OBJECTIVES: 1) Characterize the subjective sensations reported by patients during caloric testing. 2) Assess if the sensation was correlated with the peak slow phase velocity (SPV). METHODS: Retrospective chart review at a Canadian adult tertiary-quaternary care balance centre for patients undergoing diagnostic caloric testing between December 2014 and September 2015...
November 14, 2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29081428/motor-imagery-of-body-movements-that-can-t-be-executed-on-earth
#12
Michael Kalicinski, Otmar Bock, Nadja Schott
BACKGROUND: Before participating in a space mission, astronauts undergo parabolic-flight and underwater training to facilitate their subsequent adaptation to weightlessness. A quick, simple and inexpensive alternative could be training by motor imagery (MI). OBJECTIVE: An important prerequisite for this training approach is that humans are able to imagine movements which are unfamiliar, since they can't be performed in the presence of gravity. Our study addresses this prerequisite...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29081427/clinical-and-video-head-impulse-test-in-the-diagnosis-of-posterior-circulation-stroke-presenting-as-acute-vestibular-syndrome-in-the-emergency-department
#13
Ayse Guler, Funda Karbek Akarca, Cenk Eraslan, Ceyda Tarhan, Cem Bilgen, Tayfun Kirazli, Nese Celebisoy
INTRODUCTION: Head impulse test (HIT) is the critical bedside examination which differentiates vestibular neuritis (VN) from posterior circulation stroke (PCS) in acute vestibular syndrome (AVS). Video-oculography based HIT (vHIT) may have aadditional strength in making the differentiation. METHODS: Patients admitted to the emergency department of a tertiary-care medical center with AVS were studied. An emergency specialist and a neurologist performed HIT. vHIT was conducted by an neuro-otology research fellow...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29081426/bilateral-vestibulopathy-diagnostic-criteria-consensus-document-of-the-classification-committee-of-the-b%C3%A3-r%C3%A3-ny-society
#14
Michael Strupp, Ji-Soo Kim, Toshihisa Murofushi, Dominik Straumann, Joanna C Jen, Sally M Rosengren, Charles C Della Santina, Herman Kingma
This paper describes the diagnostic criteria for bilateral vestibulopathy (BVP) by the Classification Committee of the Bárány Society. The diagnosis of BVP is based on the patient history, bedside examination and laboratory evaluation. Bilateral vestibulopathy is a chronic vestibular syndrome which is characterized by unsteadiness when walking or standing, which worsen in darkness and/or on uneven ground, or during head motion. Additionally, patients may describe head or body movement-induced blurred vision or oscillopsia...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29081425/effect-of-visual-input-on-postural-stability-in-young-adults-with-chronic-motion-sensitivity-a-controlled-cross-sectional-study
#15
Ahmad A Alharbi, Eric G Johnson, Abdulaziz A Albalwi, Noha S Daher, Tim K Cordett, Oluwaseun I Ambode, Fahad H Alshehri
BACKGROUND: Chronic motion sensitivity (CMS) has been defined as a feeling of un-wellness elicited by either actual or perceived motion. CMS is a common condition and is more prevalent in females than in males. In addition to a variety of symptoms, young adults with CMS have less postural stability than those without CMS. OBJECTIVE: To determine whether dependence on visual cues for postural stability is different between young adults with and without CMS, and whether it differs by gender within each group...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29081424/hippocampal-gene-expression-serum-cortisol-level-and-spatial-memory-in-rats-exposed-to-hypergravity
#16
Arata Horii, Kenji Mitani, Chisako Masumura, Atsuhiko Uno, Takao Imai, Yuka Morita, Kuniyuki Takahashi, Tadashi Kitahara, Hidenori Inohara
BACKGROUND: Due to spatial disorientation reported in space, spatial memory and navigation performances could be more largely impaired by gravity changes. Hippocampus, a key structure for spatial memory, receives inputs from gravity-sensing otolith organs. OBJECTIVE: To determine the key molecules in the rat hippocampus that contribute to an adaptation to altered gravity in terms of spatial memory performance. METHODS: Gene expression of hippocampus and spatial memory after continuous two-weeks exposure to 2 G hypergravity (HG) were examined using a microarray analysis followed by real-time PCR methods and radial arm maze testing, respectively...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29064832/prototype-tests-of-vertical-and-torsional-alignment-nulling-for-screening-vestibular-function
#17
M C Schubert, J Stitz, H S Cohen, H Sangi-Haghpeykar, A P Mulavara, B T Peters, J J Bloomberg
BACKGROUND: We have developed a non-invasive, behavioral measure of ocular alignment using a computer tablet, colored lenses, and touch screen software. OBJECTIVE: The goal of this study was to determine if these tests differentiate healthy controls from patients with vestibular disorders. METHODS: In the vertical alignment nulling test (VAN), subjects were asked to adjust a horizontal line that was offset vertically from a fixed horizontal line...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29064831/vestibular-vertigo-is-associated-with-abnormal-sleep-duration
#18
Monirah Albathi, Yuri Agrawal
BACKGROUND/OBJECTIVE: Several small studies in animals and humans have suggested a relationship between vestibular function and sleep. In this study, we evaluate the association between vestibular vertigo and sleep duration in a large, representative sample of US adults. METHODS: We used data from the National Health Interview Survey, which administered a Balance Supplement in 2008 in a sample of 20,950 adult respondents. We evaluated the cross-sectional association between vestibular vertigo (based on a well-validated definition) and sleep duration (defined as short <6 hours, normal 6-8 hours, and long >8 hours)...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29064830/evaluation-of-vascular-variations-at-cerebellopontine-angle-by-3d-t2wi-magnetic-resonance-imaging-in-patients-with-vertigo
#19
Fatma Beyazal Celiker, Engin Dursun, Metin Celiker, Tugba Durakoglugil, Mehmet Beyazal, Mehmet Fatih Inecikli, Abdulkadir Ozgur, Suat Terzi
BACKGROUND: Vascular loops of the anterior-inferior cerebellar artery (AICA) at the cerebellopontine angle (CPA) are considered related to auditory-vestibular symptoms. Clinical association of these anatomical aberrations, which can be grouped together as vascular compression syndromes, is controversial. Magnetic resonance imaging (MRI) is widely used to visualize this anatomical region, given its high sensitivity and specificity. OBJECTIVE: To elucidate the clinical relationship of vertigo symptoms with vascular loop compression syndrome by evaluating the neurovascular contacts of the vestibulocochlear nerve (VCN) and AICA at the CPA and internal auditory canal via high-resolution MRI...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29064829/cervical-kinematics-in-patients-with-vestibular-pathology-vs-patients-with-neck-pain-a-pilot-study
#20
Grace Williams, Hilla Sarig-Bahat, Katrina Williams, Ryan Tyrrell, Julia Treleaven
OBJECTIVE: Research has consistently shown cervical kinematic impairments in subjects with persistent neck pain (NP). It could be reasoned that those with vestibular pathology (VP) may also have altered kinematics since vestibular stimulation via head movement can cause dizziness and visual disturbances. However, this has not been examined to date. This pilot study investigated changes in cervical kinematics between asymptomatic control, NP and VP subjects using a Virtual Reality (VR) system...
2017: Journal of Vestibular Research: Equilibrium & Orientation
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