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vestibular evoked myogenic potential

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https://www.readbyqxmd.com/read/28177166/splenius-capitis-is-a-reliable-target-for-measuring-cervical-vestibular-evoked-myogenic-potentials-in-adults
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/28017229/vestibular-evoked-myogenic-potentials-and-mri-in-early-multiple-sclerosis-validation-of-the-vemp-score
#9
Luka Crnošija, Magdalena Krbot Skorić, Tereza Gabelić, Ivan Adamec, Mario Habek
BACKGROUND: To validate the VEMP score as a measure of brainstem dysfunction in patients with the first symptom of multiple sclerosis (MS) (clinically isolated syndrome (CIS)) and to investigate the correlation between VEMP and brainstem MRI results. METHODS: 121 consecutive CIS patients were enrolled and brainstem functional system score (BSFS) was determined. Ocular VEMP (oVEMP) and cervical VEMP (cVEMP) were analyzed for latencies, conduction block and amplitude asymmetry ratio and the VEMP score was calculated...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27974448/the-inion-response-revisited-evidence-for-a-possible-cerebellar-contribution-to-vestibular-evoked-potentials-produced-by-air-conducted-sound-stimulation
#10
Neil P M Todd, Sendhil Govender, James Gordon Colebatch
This study investigated the effect of eye gaze and head position on vestibular evoked potentials (VsEPs). Head position would be expected to affect myogenic sources and eye position is known to affect ocular myogenic responses (OVEMPs), whereas a neurogenic source should behave otherwise. 11 healthy subjects were recruited and VsEPs using 72 channel EEG were recorded at a fixed intensity above the vestibular threshold. Three eye gaze and three head positions were tested (-20°, 0° and+20° to the horizontal)...
December 14, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27942898/assessment-of-endolymphatic-hydrops-and-otolith-function-in-patients-with-m%C3%A3-ni%C3%A3-re-s-disease
#11
Tomoko Okumura, Takao Imai, Yasumitsu Takimoto, Noriaki Takeda, Tadashi Kitahara, Atsuhiko Uno, Takefumi Kamakura, Yasuhiro Osaki, Yoshiyuki Watanabe, Hidenori Inohara
Ménière's disease is associated with hydrops of the inner ear endolymphatic space, and histopathologically, the cochlea and vestibule are usually involved. We used gadolinium-enhanced magnetic resonance imaging and measured cervical and ocular vestibular evoked myogenic potentials and the gain in the utricular induced linear vestibulo-ocular reflex to test the hypothesis that vestibular hydrops in Ménière's disease patients is associated with otolith organ dysfunction. We evaluated 21 patients diagnosed with unilateral definitive Ménière's disease using gadolinium magnetic resonance imaging to detect endolymphatic hydrops in the cochlea and vestibule...
December 10, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27941522/nystagmus-and-central-vestibular-disorders
#12
Jeong-Yoon Choi, Ji-Soo Kim
PURPOSE OF REVIEW: This review will cover the recent advances in clinical and laboratory features, pathophysiology, and treatment of central vestibular disorders. RECENT FINDINGS: Several features and mechanisms of central nystagmus have been identified over the years. Application of head impulse tests and vestibular evoked myogenic potentials has expanded our understanding of altered processing of canal-driven and otolith-driven vestibular signals in lesions involving the central vestibular structures...
February 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27930443/otolith-dysfunction-in-persons-with-both-diabetes-and-benign-paroxysmal-positional-vertigo
#13
Linda J DʼSilva, Hinrich Staecker, James Lin, Christy Maddux, John Ferraro, Hongying Dai, Patricia M Kluding
OBJECTIVE: Vestibular dysfunction is a well-recognized complication of type 2 diabetes (DM) that may contribute to increased fall risk. The prevalence of benign paroxysmal positional vertigo (BPPV) is higher in people with DM. The impact of DM on the otolith organs of the vestibular system in people with BPPV is unknown. The purpose of this study was to analyze otolith function using vestibular-evoked myogenic potential (VEMP) tests in people with DM and concurrent BPPV (BPPV + DM), and to examine the relationships between VEMP variables and diabetes-related variables...
March 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/27919576/ocular-vestibular-evoked-myogenic-potentials-and-the-importance-of-the-bifid-response
#14
EDITORIAL
Eleftherios S Papathanasiou
No abstract text is available yet for this article.
January 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27916007/characteristics-and-clinical-use-of-ocular-and-cervical-vestibular-evoked-myogenic-potentials-for-evaluating-paediatric-candidates-for-cochlear-implants
#15
X-D Xu, J Hu, Q Zhang, Y Zhang, X-T Zhang, Y-F Chen, M Xu
OBJECTIVE: This study aimed to define the characteristics and use of ocular and cervical vestibular evoked myogenic potentials for evaluating paediatric cochlear implant candidates. METHODS: Ocular and cervical vestibular evoked myogenic potentials of 34 paediatric cochlear implant candidates were analysed. All patients also underwent a routine audiological examination, including computed tomography. RESULTS: In all, 27 patients with normal inner-ear structures had absent or impaired vestibular evoked myogenic potential responses...
January 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27889628/effect-of-betel-nut-chewing-on-the-otolithic-reflex-system
#16
Chuan-Yi Lin, Yi-Ho Young
OBJECTIVE: This study investigated the effect of betel nut chewing on the otolithic reflex system. METHODS: Seventeen healthy volunteers without any experience of chewing betel nut (fresh chewers) and 17 habitual chewers underwent vital sign measurements, ocular vestibular-evoked myogenic potential (oVEMP), and cervical VEMP (cVEMP) tests prior to the study. Each subject then chewed two pieces of betel nut for 2min (dosing). The same paradigm was repeated immediately, 10min, and 20min after chewing...
January 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27861193/a-comparison-of-surgical-treatments-for-superior-semicircular-canal-dehiscence-a-systematic-review
#17
Fuat Ziylan, Ahmet Kinaci, Andy J Beynon, Henricus P M Kunst
OBJECTIVE: We investigate the postoperative subjective and objective outcomes of different surgical treatments for superior semicircular canal dehiscence (SSCD): vestibular signs, auditory signs, vestibular evoked myogenic potential test, pure tone audiogram, speech audiogram, or video-nystagmography. DATA SOURCES: An electronic search performed in the PubMed, Cochrane Library, and EMBASE databases on 15th of September 2015. A systematic search was conducted. Articles were included if written in English, Dutch, German, or French language...
January 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/27856148/evaluation-of-benign-paroxysmal-positional-vertigo-following-le-fort-i-osteotomy
#18
K Deniz, S S Akdeniz, A Ö Koç, S Uçkan, L N Ozluoğlu
The Le Fort I osteotomy is widely used to correct dentofacial deformities. Benign paroxysmal positional vertigo (BPPV) is a common vestibular end organ disorder characterized by short, often recurrent episodes of vertigo. Head trauma is one of the known causes of BPPV. During pterygoid osteotomy, the surgical trauma induced by percussion with the surgical mallet and osteotomes can displace otoliths into the semicircular canal, resulting in BPPV. The aim of this study was to evaluate the potential risk of occurrence of BPPV in individuals undergoing Le Fort I osteotomy...
March 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27834534/vestibular-balance-microvascular-and-white-matter-neuroimaging-characteristics-of-blast-injuries-and-mild-traumatic-brain-injury-four-case-reports
#19
Ramtilak Gattu, Faith W Akin, Anthony T Cacace, Courtney D Hall, Owen D Murnane, E Mark Haacke
BACKGROUND: Case reports are presented on four Veterans, aged 29-46 years, who complained of chronic dizziness and/or postural instability following blast exposures. Two of the four individuals were diagnosed with mild traumatic brain injury and three of the four were exposed to multiple blasts. Comprehensive vestibular, balance, gait, audiometry and neuroimaging procedures were used to characterize their injuries. CASE REPORT: Vestibular assessment included videonystagmography, rotary chair and cervical and ocular vestibular evoked myogenic potentials...
2016: Brain Injury: [BI]
https://www.readbyqxmd.com/read/27814311/effects-of-acoustic-stimulus-duration-on-cervical-vestibular-evoked-myogenic-potentials-a-neurophysiological-and-modeling-study
#20
A Ciardo, N El Assawy, S Mauro, L Priano
OBJECTIVE: To analyze and model the effects of acoustic stimulus duration on cervical vestibular evoked myogenic potentials (cVEMPs). DESIGN: Subjects with normal hearing and no vestibular or cervical disorders were tested using 1 kHz tone bursts (TBs) of different durations to evoke cVEMPs from the ipsilateral sternocleidomastoid muscle. VEMP modeling was performed in Labview. RESULTS: The increase in TB duration initially resulted in a non-linear increase in cVEMP amplitude, followed by more complex cVEMP modifications that were mainly related to the appearance of a new wave (nX) that interfered with n23...
November 3, 2016: Journal of Vestibular Research: Equilibrium & Orientation
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