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tone burst vestibular stimulation

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https://www.readbyqxmd.com/read/27716603/do-vestibular-evoked-myogenic-potential-abnormalities-in-patients-with-cochlear-implant-only-reflect-saccular-dysfunction
#1
Hasan Demirhan, Muhammet Yıldız, Özgür Yiğit
OBJECTIVE: The objective of this study was to explore the usefulness of 1000-Hz tone burst (TB) stimuli for detecting cervical vestibular-evoked myogenic potential (cVEMP) abnormalities in patients with a cochlear implant (CI). MATERIALS AND METHODS: Thirty asymptomatic patients who received unilateral CI because of severe bilateral sensorineural hearing loss were assessed for cVEMP produced by TB stimuli at two frequencies (500 and 1000 Hz) in the airway. VEMPs were recorded when the devices were switched to the on (CI-on) and off (CI-off) positions...
August 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27105980/the-cervical-vestibular-evoked-myogenic-potentials-cvemps-recorded-along-the-sternocleidomastoid-muscles-during-head-rotation-and-flexion-in-normal-human-subjects
#2
Alexander Ashford, Jun Huang, Chunming Zhang, Wei Wei, William Mustain, Thomas Eby, Hong Zhu, Wu Zhou
Tone burst-evoked myogenic potentials recorded from tonically contracted sternocleidomastoid muscles (SCM) (cervical VEMP or cVEMP) are widely used to assess the vestibular function. Since the cVEMP response is mediated by the vestibulo-collic reflex (VCR) pathways, it is important to understand how the cVEMPs are determined by factors related to either the sensory components (vestibular end organs) or the motor components (SCM) of the VCR pathways. Compared to the numerous studies that have investigated effects of sound parameters on the cVEMPs, there are few studies that have examined effects of SCM-related factors on the cVEMPs...
August 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/26960788/effect-of-personal-music-system-use-on-sacculocollic-reflex-assessed-by-cervical-vestibular-evoked-myogenic-potential-a-preliminary-investigation
#3
Niraj Kumar Singh, Chithra Sobha Sasidharan
Listening to music through a portable personal music system (PMS) is a growing trend, especially among the youth. The preferred listening level in such kinds of PMS has been reported to cross the safe levels and its impact on the auditory system was demonstrated in several previous investigations. Owing to the commonality in several aspects between the auditory and the vestibular systems, it appears likely that the deleterious effects of PMS use could also be impinging on the vestibular system, which has never been investigated...
March 2016: Noise & Health
https://www.readbyqxmd.com/read/26890427/diagnostic-value-of-vestibular-evoked-myogenic-potentials-in-m%C3%A3-ni%C3%A3-re-s-disease-and-vestibular-migraine
#4
Mehti Salviz, Turgut Yuce, Hurtan Acar, Isil Taylan, Gulsah Acar Yuceant, Abdullah Karatas
Overlaps can be seen between vestibular migraine (VM) Ménière's Disease (MD) and diagnosis is difficult if hearing is normal. We aimed to investigate the sacculo-collic pathway in VM patients, MD patients, and healthy controls to define the diagnostic role of cervical VEMP (cVEMP). VEMP testing in response to 500 Hz and 1000 Hz air-conducted tone burst (TB) stimulation was studied prospectively in 22 subjects with definite VM (according to Bárány nomenclature), 30 subjects with unilateral definite MD, and 18 volunteers matched healthy controls...
2016: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/26873525/sensitivity-of-the-cochlear-nerve-to-acoustic-and-electrical-stimulation-months-after-a-vestibular-labyrinthectomy-in-guinea-pigs
#5
D J Brown, P Mukherjee, C J Pastras, W P Gibson, I S Curthoys
Single-sided deafness patients are now being considered candidates to receive a cochlear implant. With this, many people who have undergone a unilateral vestibular labyrinthectomy for the treatment of chronic vertigo are now being considered for cochlear implantation. There is still some concern regarding the potential efficacy of cochlear implants in these patients, where factors such as cochlear fibrosis or nerve degeneration following unilateral vestibular labyrinthectomy may preclude their use. Here, we have performed a unilateral vestibular labyrinthectomy in normally hearing guinea pigs, and allowed them to recover for either 6 weeks, or 10 months, before assessing morphological and functional changes related to cochlear implantation...
May 2016: Hearing Research
https://www.readbyqxmd.com/read/26758292/band-limited-chirp-stimulation-in-vestibular-evoked-myogenic-potentials
#6
Leif Erik Walther, Mario Cebulla
Air conducted vestibular evoked myogenic potentials (VEMP) can be elicited by various low frequency and intense sound stimuli, mainly clicks or short tone bursts (STB). Chirp stimuli are increasingly used in diagnostic audiological evaluations as an effective means to obtain acoustically evoked responses in narrowed or extended frequency ranges. We hypothesized in this study that band limited chirp stimulation, which covers the main sensitivity range of sound sensitive otolithic afferents (around 500 Hz), might be useful for application in cervical and ocular VEMP to air conduction...
October 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/26724755/changes-in-cochlear-function-related-to-acoustic-stimulation-of-cervical-vestibular-evoked-myogenic-potential-stimulation
#7
Anna-Karin Strömberg, Åke Olofsson, Magnus Westin, Maoli Duan, Stefan Stenfelt
Evaluation of cervical evoked myogenic potentials (c-VEMP) is commonly applied in clinical investigations of patients with suspected neurotological symptoms. Short intense acoustic stimulation of peak levels close to 130 dB SPL is required to elicit the responses. A recent publication on bilateral significant sensorineural hearing loss related to extensive VEMP stimulation motivates evaluations of immediate effects on hearing acuity related to the intense acoustic stimulation required to elicit c-VEMP responses...
December 24, 2015: Hearing Research
https://www.readbyqxmd.com/read/26696853/role-of-the-insula-and-vestibular-system-in-patients-with-chronic-subjective-dizziness-an-fmri-study-using-sound-evoked-vestibular-stimulation
#8
Iole Indovina, Roberta Riccelli, Giuseppe Chiarella, Claudio Petrolo, Antonio Augimeri, Laura Giofrè, Francesco Lacquaniti, Jeffrey P Staab, Luca Passamonti
Chronic subjective dizziness (CSD) is a common vestibular disorder characterized by persistent non-vertiginous dizziness, unsteadiness, and heightened sensitivity to motion stimuli that may last for months to years after events that cause acute vestibular symptoms or disrupt balance. CSD is not associated with abnormalities of basic vestibular or oculomotor reflexes. Rather, it is thought to arise from persistent use of high-threat postural control strategies and greater reliance on visual cues for spatial orientation (i...
2015: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/26672234/-air-conducted-ocular-vestibular-evoked-myogenic-potential-in-patients-with-sudden-sensorineural-hearing-loss
#9
Peijie Wang, Wei Luo, Lin Wu, Zhenyu Chen, Xiaoyan Lu
OBJECTIVE: To investigate the characteristics of air-conducted ocular vestibular-evoked myogenic potential(oVEMP) in patients with sudden sensorineural hearing loss (SSHL). So as to understanding the range and the degree of the vestibular system damage in patients with SSHL. METHOD: Thirty-five cases of unilateral SSHL were enrolled as the observing group from December in 2013 to December in 2014. 500 Hz air-conducted tone burst was employed as stimulation. Fifity-five healthy young subjects were recruited as the control group...
July 2015: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/26502192/the-effect-of-increasing-intracranial-pressure-on-ocular-vestibular-evoked-myogenic-potential-frequency-tuning
#10
Claudia Jerin, Reza Wakili, Roger Kalla, Robert Gürkov
OBJECTIVE: Ocular vestibular-evoked myogenic potentials (oVEMPs) represent extraocular muscle activity in response to vestibular stimulation. The authors sought to investigate whether posture-induced increase of the intracranial pressure (ICP) modulated oVEMP frequency tuning, that is, the amplitude ratio between 500-Hz and 1000-Hz stimuli. DESIGN: Ten healthy subjects were enrolled in this study. The subjects were positioned in the horizontal plane (0 degree) and in a 30-degree head-downwards position to elevate the ICP...
November 2015: Ear and Hearing
https://www.readbyqxmd.com/read/26371697/persistent-otolith-dysfunction-even-after-successful-repositioning-in-benign-paroxysmal-positional-vertigo
#11
Eui-Joong Kim, Sun-Young Oh, Ji Soo Kim, Tae-Ho Yang, Si-Young Yang
To evaluate utricular and saccular function during the acute and resolved phases of BPPV, ocular and cervical vestibular evoked myogenic potentials (VEMPs) were studied in 112 patients with BPPV and 50 normal controls in a referral-based University Hospital. Ocular (oVEMPs) and cervical VEMPs (cVEMPs) were induced using air-conducted sound (1000Hz tone burst, 100dB normal hearing level) at the time of initial diagnosis and 2 months after successful repositioning in patients with BPPV, and the results were compared with those of the controls...
November 15, 2015: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/26225636/hearing-loss-after-vestibular-implantation-in-sand-rats-with-normal-hearing
#12
Aviram Mizrachi, Ohad Hilly, Eyal Raveh, Joseph Attias, Ben I Nageris
IMPORTANCE: Bilateral vestibular failure is a debilitating condition that may lead to oscillopia and adversely affect quality of life. Researchers have suggested that vestibular function might be restored with implantation of an external mechanical stimulation device. However, it is essential that such a device must not interfere with normal hearing. OBJECTIVE: To evaluate the effect of vestibular implant insertion on hearing in a sand rat model with normal hearing...
September 2015: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/26223715/comparison-of-tone-burst-click-and-chirp-stimulation-in-vestibular-evoked-myogenic-potential-testing-in-healthy-people
#13
COMPARATIVE STUDY
Abdulkadir Özgür, Özlem Çelebi Erdivanlı, Zerrin Özergin Coşkun, Suat Terzi, Enes Yiğit, Münir Demirci, Engin Dursun
OBJECTIVE: Vestibular evoked myogenic potential (VEMP) is a clinical test used in the diagnosis of vestibular diseases. VEMP uses several stimulants to stimulate the vestibular system and measure myogenic potentials. The aim of this study was to compare the effects of tone burst, click, and chirp stimulation in VEMP on the latency and amplitude of myogenic potentials. MATERIALS AND METHODS: We compared the results of 78 ears from 39 volunteers. We measured the sternocleidomastoid muscle potential of each ear following a 500-Hz tone burst, click, and chirp stimulation while in a sitting position and evaluated the latency and amplitude...
April 2015: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/26003125/sound-evoked-vestibular-stimulation-affects-the-anticipation-of-gravity-effects-during-visual-self-motion
#14
Iole Indovina, Elisabetta Mazzarella, Vincenzo Maffei, Benedetta Cesqui, Luca Passamonti, Francesco Lacquaniti
Humans anticipate the effects of gravity during visually simulated self-motion in the vertical direction. Here we report that an artificial vestibular stimulation consisting of short-tone bursts (STB) suppresses this anticipation. Participants pressed a button upon entering a tunnel during virtual-reality roller coaster rides in downward or forward directions. In different trials, we delivered STB, pulsed white noise (WN), or no sound (NO). In the control conditions (WN, NO), participants responded earlier during downward than forward motion irrespective of true kinematics, consistent with the a priori expectation that downward but not forward motion is accelerated by gravity...
August 2015: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/25997090/the-effect-of-repetition-rate-on-air-conducted-ocular-vestibular-evoked-myogenic-potentials-ovemps
#15
Jamie M Bogle, David A Zapala, Brittany Burkhardt, Kurt Walker, Larry Lundy, Janet Shelfer, Terri Pratt, Millicent Garry, David Walker
PURPOSE: Ocular vestibular evoked myogenic potentials (oVEMPs) are used to describe utricular/superior vestibular nerve function; however, optimal recording parameters have not been fully established. This study investigated the effect of repetition rate on air-conducted oVEMPs. METHOD: Ten healthy adults were evaluated using 500-Hz tone bursts (4-ms duration, Blackman gating, 122 dB pSPL). Four repetition rates were used (1.6, 4.8, 8.3, and 26.6 Hz) and resulting oVEMP response presence, amplitude, amplitude asymmetry, and n1/p1 latency were assessed...
September 2015: American Journal of Audiology
https://www.readbyqxmd.com/read/25990760/frequency-preference-in-cervical-vestibular-evoked-myogenic-potential-of-idiopathic-otolithic-vertigo-patients-does-it-reflect-otolithic-endolymphatic-hydrops
#16
Toshihisa Murofushi, Sakurako Komiyama, Yushi Hayashi, Eriko Yoshimura
CONCLUSION: Idiopathic otolithic vertigo (IOV) with relatively long duration of attacks might be caused by endolymphatic hydrops in the otolith organ. OBJECTIVES: To clarify the pathophysiology underlying IOV, episodic tilting or translational sensation attacks by unknown causes, especially the possibility of endolymphatic hydrops in the otolith organ. METHODS: Sixteen patients (6 men and 10 women) diagnosed with having IOV were enrolled. In these subjects, frequency preference in cervical vestibular evoked myogenic potential (cVEMP) was studied...
2015: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/25989664/-ocular-and-cervical-vestibular-evoked-myogenic-potentials-in-patients-with-peripheral-vestibular-disorders
#17
Qing Zhang, Xinda Xu, Min Xu, Juan Hu, Jianmin Liang, Kimitaka Kaga
OBJECTIVE: To observe the ocular vestibular evoked myogenic potential (oVEMP) and the cervical vestibular evoked myogenic potential (cVEMP) in patients with vestibular diseases. METHOD: From March, 2011 to March, 2012, 13 patients (14 ears) with peripheral vestibular diseases were recruited. Each patient underwent conventional oVEMP and cVEMP examinations elicited by intensive air conducted sound (short tone burst, 500 Hz) in bilateral ears. RESULT: Thirteen cases (14 ears) were included in this study...
January 2015: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/25775755/-normal-value-of-air-conducted-ocular-evoked-myogenic-potential-in-young-people
#18
Peijie Wang, Wei Luo, Xiaoyan Lu, Lin Wu, Zhenyu Chen, Gan Wang, Hong Hao, Wuwei Zhao
OBJECTIVE: To investigate the characteristics of air-conducted ocular vestibular-evoked myogenic potential (oVEMP) in healthy young people , so as to establish the normative data of young people. METHOD: Fifty-five healthy young subjects were recruited as study participants, 500 Hz air-conducted tone burst was used as stimulation. The threshold of oVEMP in each ear was examined. The latencies of P1 and N1, P1-N1 interval, peak-to-peak of P1-N1 amplitude and asymmetry ratio were measured...
October 2014: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/25711937/increased-gain-of-vestibulospinal-potentials-evoked-in-neck-and-leg-muscles-when-standing-under-height-induced-postural-threat
#19
E N Naranjo, J H J Allum, J T Inglis, M G Carpenter
OBJECTIVE: To measure changes in amplitudes of vestibular evoked myogenic potentials (VEMPs) elicited from neck, upper and lower limb muscles during a quiet standing task with increased postural threat achieved by manipulating surface height. METHODS: Twenty eight subjects were tested while standing on a platform raised to 0.8 m and 3.2 m from the ground. Surface electromyography was recorded from the ipsilateral sternocleidomastoid (SCM), biceps brachii (BB), flexor carpi radialis (FCR), soleus (SOL) and medial gastrocnemius (MG) muscles...
May 7, 2015: Neuroscience
https://www.readbyqxmd.com/read/25704871/vestibular-evoked-myogenic-potentials-vemps-evoked-by-air-and-bone-conducted-stimuli-in-vestibular-neuritis
#20
Sendhil Govender, Danielle L Dennis, James G Colebatch
OBJECTIVE: To compare and characterise abnormalities for short latency vestibular evoked myogenic potentials (VEMPs) elicited by air- (AC) and two differing types of bone-conducted (BC) stimuli during vestibular neuritis (VN). METHODS: AC (500Hz short tone bursts) and two BC stimuli (500Hz at the forehead and impulses at the mastoids) were used to evoke cervical and ocular potentials (cVEMPs and oVEMPs) in VN patients (n=22) and healthy subjects. RESULTS: More abnormalities were observed for the oVEMP than the cVEMP when using either AC 500Hz or BC 500Hz...
October 2015: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
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