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vestibular evoked myogenic potentials

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https://www.readbyqxmd.com/read/28344549/functional-brain-activation-in-response-to-a-clinical-vestibular-test-correlates-with-balance
#1
Fatemeh Noohi, Catherine Kinnaird, Yiri DeDios, Igor S Kofman, Scott Wood, Jacob Bloomberg, Ajitkumar Mulavara, Rachael Seidler
The current study characterizes brain fMRI activation in response to two modes of vestibular stimulation: Skull tap and auditory tone burst. The auditory tone burst has been used in previous studies to elicit either a vestibulo-spinal reflex [saccular-mediated colic Vestibular Evoked Myogenic Potentials (cVEMP)], or an ocular muscle response [utricle-mediated ocular VEMP (oVEMP)]. Research suggests that the skull tap elicits both saccular and utricle-mediated VEMPs, while being faster and less irritating for subjects than the high decibel tones required to elicit VEMPs...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28336540/effects-of-midline-sagittal-location-on-bone-conducted-cervical-and-ocular-vestibular-evoked-myogenic-potentials
#2
Sendhil Govender, James Gordon Colebatch
We have investigated the effectiveness of two bone conducted stimuli in producing vestibular evoked myogenic potentials (VEMPs) following stimulation along mid-sagittal skull sites. Twenty subjects (mean age 24, range: 18 to 34 years; 6 males; 14 females) were studied using a smoothed impulse and a 500 Hz tone burst applied to Nz, Fpz, AFz, Fz, FCz and Cz with both compressive and rarefactive onset phases. Cervical (cVEMPs) and ocular VEMPs (oVEMPs) were recorded as well as linear acceleration in 3 axes. cVEMPs evoked by 500 Hz showed no change in response polarity to either stimulus location or phase...
March 23, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28328999/what-the-electrical-impedance-can-tell-about-the-intrinsic-properties-of-an-electrodynamic-shaker
#3
Bernd Lütkenhöner
Small electrodynamic shakers are becoming increasingly popular for diagnostic investigations of the human vestibular system. More specifically, they are used as mechanical stimulators for eliciting a vestibular evoked myogenic potential (VEMP). However, it is largely unknown how shakers perform under typical measurement conditions, which considerably differ from the normal use of a shaker. Here, it is shown how the basic properties of a shaker can be determined without requiring special sensors such as accelerometers or force gauges...
2017: PloS One
https://www.readbyqxmd.com/read/28323487/pathological-eye-movements-influence-on-the-recordings-of-ocular-vestibular-evoked-myogenic-potential
#4
Ting-Hua Yang, Hsin-Lin Chen, Yi-Ho Young
OBJECTIVE: This study investigated the influence of pathological eye movements on the recordings of ocular vestibulo-evoked myogenic potential (oVEMP). METHODS: Ten patients with pathological eye movements of non-vestibular origin (nine congenital nystagmus and one opsoclonus) who had negative MRI result were assigned to Group A. Another 20 vestibular neuritis (VN) patients with spontaneous nystagmus were assigned to Group B. Both groups underwent audiometry, and caloric, oVEMP and cervical VEMP (cVEMP) tests...
March 21, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28289399/auditory-and-vestibular-evoked-potentials-correlate-with-motor-and-non-motor-features-of-parkinson-s-disease
#5
Ali Soliman Shalash, Dalia Mohamed Hassan, Hanan Hani Elrassas, Mohamed Mosaad Salama, Edna Méndez-Hernández, José M Salas-Pacheco, Oscar Arias-Carrión
Degeneration of several brainstem nuclei has been long related to motor and non-motor symptoms (NMSs) of Parkinson's disease (PD). Nevertheless, due to technical issues, there are only a few studies that correlate that association. Brainstem auditory-evoked potential (BAEP) and vestibular-evoked myogenic potential (VEMP) responses represent a valuable tool for brainstem assessment. Here, we investigated the abnormalities of BAEPs, ocular VEMPs (oVEMPs), and cervical VEMPs (cVEMPs) in patients with PD and its correlation to the motor and NMSs...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28282709/analysis-of-saccular-function-with-vestibular-evoked-myogenic-potential-test-in-meniere-s-disease
#6
Sasan Dabiri, Nasrin Yazdani, Mahdis Esfahani, Niloufar Tari, Susan Adil, Zahra Mahvi, Nima Rezazadeh
Meniere's disease is the disorder of inner ear characterized by vertigo, tinnitus and sensorineural hearing loss. The vestibular evoked myogenic potential (VEMP) test could be useful in the analysis of saccular function, and diagnosis of Meniere's disease. In this study, we've analyzed the saccular function, using VEMP test in different groups of Meniere's disease. Patients were categorized as possible, probable or definite Meniere's disease groups according to the guideline of American Academy of Otolaryngology-Head and Neck Surgery...
February 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28264605/vestibular-dys-function-in-children-with-sensorineural-hearing-loss-a-systematic-review
#7
Evi Verbecque, Tessa Marijnissen, Niels De Belder, Vincent Van Rompaey, An Boudewyns, Paul Van de Heyning, Luc Vereeck, Ann Hallemans
OBJECTIVE: The objective of this study is to provide an overview of the prevalence of vestibular dysfunction in children with SNHL classified according to the applied test and its corresponding sensitivity and specificity. DESIGN: Data were gathered using a systematic search query including reference screening. STUDY SAMPLE: Pubmed, Web of Science and Embase were searched. Strategy and reporting of this review was based on the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines...
February 13, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28244847/the-n3-potential-and-the-efferent-cochlear-pathway-in-profound-sensorineural-hearing-loss
#8
M H Abou-Elew, N A Hosni, E A Obaid, A H Ewida
OBJECTIVE: This study aimed to evaluate the presence of the N3 potential (acoustically evoked short latency negative response) in profound sensorineural hearing loss, its association with the cervical vestibular evoked myogenic potential and the relationship between both potentials and loss of auditory function. METHODS: Otological examinations of 66 ears from 50 patients aged from 4 to 36 years were performed, and the vestibular evoked myogenic potential and auditory brainstem response were measured...
April 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28242131/vestibular-evoked-myogenic-potentials-and-video-head-impulse-test-in-patients-with-vertigo-dizziness-and-imbalance
#9
Magdalena Krbot Skorić, Ivan Adamec, Tin Pavičić, Ivan Pavlović, Berislav Ruška, Luka Crnošija, Mario Habek
The aim of this study was to compare vestibular evoked myogenic potentials (VEMP) and video head impulse test (vHIT) results in patients presenting with vertigo and dizziness. We retrospectively analyzed data of all patients with the chief complaint of vertigo, dizziness, or imbalance that underwent VEMP and vHIT from January 2015 to January 2016. A total of 117 patients (73 females, mean age 53.92±16.76) fulfilled inclusion criteria: group 1 included patients with the final diagnosis of vestibular neuritis (VN) (N=31 (16 right and 15 left VN)), group 2 included patients with the final diagnosis of vertigo of central origin (N=23) and group 3 included patients with the final diagnosis of unspecified dizziness (N=63)...
February 24, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28237301/aging-and-wave-component-latency-delays-in-ovemp-and-cvemp-a-systematic-review-with-meta-analysis
#10
Ysa Karen Dos Santos Macambira, Aline Tenório Lins Carnaúba, Luciana Castelo Branco Camurça Fernandes, Nassib Bezerra Bueno, Pedro de Lemos Menezes
INTRODUCTION: The natural aging process may result in morphological changes in the vestibular system and in the afferent neural pathway, including loss of hair cells, decreased numbers of vestibular nerve cells, and loss of neurons in the vestibular nucleus. Thus, with advancing age, there should be a decrease in amplitudes and an increase in latencies of the vestibular evoked myogenic potentials, especially the prolongation of p13 latency. Moreover, many investigations have found no significant differences in latencies with advancing age...
February 2, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28220492/magnetic-resonance-imaging-of-intratympanic-gadolinium-helps-differentiate-vestibular-migraine-from-m%C3%A3-ni%C3%A3-re-disease
#11
Wenfang Sun, Ping Guo, Tongli Ren, Wuqing Wang
OBJECTIVES/HYPOTHESIS: To study the differential diagnosis of vestibular migraine (VM) and Ménière disease (MD) by using magnetic resonance imaging (MRI) of intratympanic gadolinium. STUDY DESIGN: Prospective cohort study. METHODS: Definite MD patients (n = 30) and definite or probable VM patients (n = 30) were included, and the two groups were age and sex matched. Three-dimensional real inversion recovery (3D-real-IR) MRI was performed 24 hours after bilateral intratympanic gadolinium to assess the presence and degree of endolymphatic hydrops (EH)...
February 21, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28217106/effect-of-noisy-galvanic-vestibular-stimulation-on-ocular-vestibular-evoked-myogenic-potentials-to-bone-conducted-vibration
#12
Shinichi Iwasaki, Shotaro Karino, Teru Kamogashira, Fumiharu Togo, Chisato Fujimoto, Yoshiharu Yamamoto, Tatsuya Yamasoba
OBJECTIVE: Galvanic vestibular stimulation (GVS) delivered as zero-mean current noise (noisy GVS) has been shown to improve static and dynamic postural stability probably by enhancing vestibular information. The purpose of this study was to examine the effect of an imperceptible level noisy GVS on ocular vestibular-evoked myogenic potentials (oVEMPs) in response to bone-conducted vibration (BCV). MATERIALS AND METHODS: oVEMPs to BCV were measured during the application of white noise GVS with an amplitude ranging from 0 to 300 µA [in root mean square (RMS)] in 20 healthy subjects...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28177166/splenius-capitis-is-a-reliable-target-for-measuring-cervical-vestibular-evoked-myogenic-potentials-in-adults
#13
A J Camp, C Gu, S L Cushing, K A Gordon, B D Corneil
The cervical vestibular evoked myogenic potential (cVEMP) is a common and simple test of vestibulospinal reflex patency. In the clinic, cVEMPs are measured in response to loud sounds from the sternocleidomastoid (SCM) on the ventral neck, as subjects maintain an uncomfortable head posture needed to recruit SCM. Here we characterize the cVEMP in a dorsal neck turner (Splenius Capitis; SPL), and compare it with the SCM cVEMP. cVEMPs were recorded simultaneously via surface electromyography from SCM and SPL from 17 healthy subjects in a variety of postures, including head-turned postures adopted while either seated or standing, and the clinical posture...
February 8, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28168887/cervical-and-ocular-vemp-testing-in-diagnosing-superior-semicircular-canal-dehiscence
#14
Jacob B Hunter, Neil S Patel, Brendan P O'Connell, Matthew L Carlson, Neil T Shepard, Devin L McCaslin, George B Wanna
Objective To determine the sensitivity and specificity of ocular and cervical vestibular evoked myogenic potentials (VEMPs) in the diagnosis of superior semicircular canal dehiscence (SCD) and to describe the VEMP response characteristics that are most sensitive to SCD and compare the findings to previous reports. Study Design Case series with chart review. Setting Two tertiary neurotologic referral centers. Subjects and Methods Cervical and ocular VEMP peak-to-peak amplitudes and thresholds from 39 adult patients older than 18 years with surgically confirmed SCD were compared with 84 age-matched controls...
February 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28167018/dysequilibrium-in-a-5-year-old-child-with-intrameatal-vascular-loops-bilaterally
#15
Ming-Hsun Wen, Po-Wen Cheng, Yi-Ho Young
A 5 year-old boy was rather healthy until one month ago when loss of balance and muscle tone was noted by the parents. A battery of tests comprising electroencephalography, audiometry, caloric test and ocular vestibular evoked myogenic potential (oVEMP) test were performed, yet all tests showed normal responses. Conversely, cervical VEMP (cVEMP) test showed delayed responses bilaterally. MR imaging demonstrated bilaterally intrameatal vascular loops extending into both internal auditory canals. After a 3-month medication, delayed cVEMPs were resolved and returned to normal cVEMPs bilaterally, accompanied by subsidence of dysequilibrium...
March 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28166997/the-effects-of-cochlear-implantation-on-vestibular-function-in-1-4-years-old-children
#16
Mohammad Ajalloueyan, Masoumeh Saeedi, Mohammad Sadeghi, Farzaneh Zamiri Abdollahi
OBJECTIVES: Although cochlear implants offer an effective hearing restoration option in children with severe to profound hearing loss, concern continues to exist regarding the possible effects of cochlear implantation on the vestibular system and balance. METHODS: In a prospective cohort study, 27 children with bilateral profound hearing loss (all candidates for cochlear implantation) were evaluated for their vestibular function before and after cochlear implantation...
March 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28104012/-simultaneous-triple-semicircular-canal-plugging-and-cochlear-implantation-in-advanced-meniere-s-disease
#17
D G Zhang, L Xu, Y C Han, Y F Lyu, J F Luo, Y W Li, R J Wang, Z M Fan, H B Wang
Objective: To evaluate the feasibility of combining simultaneous triple semicircular canal plugging (TSCP) and cochlear implantation (CI) to treat vertigo and hearing loss in advanced Meniere's disease(MD) patients, so as to provide an alternative surgical procedure for treating this disorder. Methods: Data from seven patients, who were referred to our hospital and diagnosed with unilateral MD strictly meeting the criteria issued by Chinese Academy of Otolaryngology-Head and Neck Surgery Committee (2006), from Jan...
January 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28099493/different-phenotypes-of-the-two-chinese-probands-with-the-same-c-889g-a-p-c162y-mutation-in-coch-gene-verify-different-mechanisms-underlying-autosomal-dominant-nonsyndromic-deafness-9
#18
Qi Wang, Peipei Fei, Hongbo Gu, Yanmei Zhang, Xiaomei Ke, Yuhe Liu
OBJECTIVES: By analyzing the different phenotypes of two Chinese DFNA9 families with the same mutation located in the intervening region between the LCCL and vWFA domains of cochlin and testing the functional changes in the mutant cochlin, we investigated the different pathogeneses for mutations in LCCL and vWFA domains. METHODS: Targeted next-generation sequencing for deafness-related genes was used to identify the mutation in the proband in family #208. The probands of family #208 and family #32 with the same p...
2017: PloS One
https://www.readbyqxmd.com/read/28063321/clinical-implication-of-cervical-vestibular-evoked-myogenic-potentials-in-benign-paroxysmal-positional-vertigo
#19
Mun Young Chang, Ji Ho Shin, Kyung Hyun Oh, Young Ho Hong, Seog-Kyun Mun
OBJECTIVES: To evaluate the value of cervical vestibular evoked myogenic potential (cVEMP) as a prognostic factor for benign paroxysmal positional vertigo (BPPV). METHODS: We reviewed 65 patients with BPPV who underwent cVEMP. Patients were divided into two groups according to resistance to the repositioning maneuver. Univariable and multivariable analyses were performed with age, gender, affected semicircular canal, affected side and cVEMP parameters to find the associated factors for resistance to the repositioning maneuver...
February 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28031157/evaluation-of-cervical-vestibular-evoked-myogenic-potential-findings-in-benign-paroxysmal-positional-vertigo
#20
Abdullah Karataş, Turgut Yüce, Işıl Taylan Çebi, Gülşah Acar Yüceant, Cemal Hacı, Mehti Salviz
OBJECTIVE: Although there has been a wide consensus on the mechanism of nystagmus and clinical presentation of benign paroxysmal positional vertigo (BPPV), the neuroepithelial pathophysiology of BPPV still remains unclear. In this study, we aimed to clarify the pathophysiology of BPPV by evaluating the cervical vestibular-evoked myogenic potential (cVEMP) findings of patients. MATERIALS AND METHODS: Thirty-six BPPV patients and 20 healthy volunteers were included...
December 2016: Journal of International Advanced Otology
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