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Rahne T, Plontke SK, Strauss C, Fredén Jansson KJ, Håkansson B, Fröhlich L. Bone conduction stimulated VEMPs by using the B250 transducer to assess the nerve of origin of sporadic vestibular schwannomas. Sci Rep 2024; 14:26483. [PMID: 39489829 PMCID: PMC11532535 DOI: 10.1038/s41598-024-78060-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 10/28/2024] [Indexed: 11/05/2024] Open
Abstract
Vestibular evoked myogenic potentials (VEMPs) are a tool to assess otolith function and a component of sensor specific vestibular diagnostics. The aim of the present study was to measure VEMP trough bone conducted (BC) stimulation using the B250 prototype and to report amplitudes, latencies and threshold levels for patients before resection of a sporadic unilateral vestibular schwannoma (VS) in order to assess function regarding to the reported nerve of origin. Twenty-seven participants (9 male/18 female) with a mean age of 55.9 years (SD: 10.8) were included for the analysis. In the side contralateral to the tumor, in 24 (89%) of the patients cVEMP could be measured, while oVEMP were recordable in 20 patients (74%). For patients with inferior vestibular nerve of origin (n = 11), cVEMP amplitudes of the affected side were significantly lower as compared to the non-affected side, while the force threshold level was increased. No statistically significant differences were observed for neither, oVEMP amplitudes nor threshold levels in the group with superior vestibular nerve of origin (n = 7). Across groups, p13 latency was significantly increased in the affected ear while all other VEMP latencies were not different between the ears. The B250 transducer was applicable to all participants of the clinical cohort. The sample size, however, was too low for a reliable statistical analysis and only allowed for exploratory analysis.
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Affiliation(s)
- Torsten Rahne
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medicine Halle, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany.
| | - Stefan K Plontke
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medicine Halle, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
| | - Christian Strauss
- Department of Neurosurgery, University Medicine Halle, Halle (Saale), Germany
| | | | - Bo Håkansson
- Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Laura Fröhlich
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medicine Halle, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
- Department of Otolaryngology, Head and Neck Surgery, University Hospital Bonn, Bonn, Germany
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Ramesh K, Thirunavukkarasu K. Decoding Age-Linked Masseter Vestibular Evoked Myogenic Potential Changes in Healthy, Aging Individuals. Am J Audiol 2024; 33:838-849. [PMID: 38843439 DOI: 10.1044/2024_aja-23-00264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024] Open
Abstract
PURPOSE The primary objective of this study was to assess how age influences masseter vestibular evoked myogenic potential (mVEMP) parameters by utilizing 500-Hz tone burst stimuli delivered through air conduction. METHOD The study involved 110 participants ranging from 15 to 60 years of age, grouped into five categories, all of whom had no previous issues related to their vestibular system. The participants were exposed to 500-Hz tone burst stimuli at 125 dB SPL through ER-3A inserts. These stimuli were presented to one ear at a time, with alternating polarity. A Tukey's honestly significant difference test was conducted to compare rectified and unrectified amplitude, along with latencies (P11 and N21) and the asymmetric ratio across all age groups. Additionally, a multivariate analysis of variance was performed to assess the impact of sex on the study variables. RESULTS All 110 participants (220 ears) in the study provided mVEMP responses, encompassing 100% of the subjects. The results revealed a significant reduction in both amplitude and latency extension for the P11 and N21 peaks. Interestingly, P11 latency was also prolonged in the youngest participants (Group 1), suggesting ongoing maturation of the system even beyond the age of 16 years. Moreover, a significant sex difference was observed in the P11 latencies. However, there were no substantial sex differences (p > .05) in N1 peak latency, peak-to-peak amplitude, rectified amplitude, and asymmetric ratio. CONCLUSIONS Changes in structure occur due to degeneration, and the quantity of vestibular sensory hair cells gradually diminishes with age. The rate of decline is faster in semicircular canals compared to end organs, as observed by Merchant et al. (2000). Following a linear degeneration starting at the age of 40 years, a continuous reduction in sensory cells and primary neurons takes place until approximately 40% of vestibular sensory cells are lost by the age of 75 years and insufficient maturation can lead to prolonged peaks and reduced amplitudes compared with those that are considered normal. Therefore, it is crucial to consider the age of the participants when making diagnoses and incorporate relevant correction factors based on age-related reference data.
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Affiliation(s)
- Karan Ramesh
- Department of Audiology and Speech-Language Pathology, SRM Medical College Hospital and Research Centre, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Kumaran Thirunavukkarasu
- Department of Audiology and Speech-Language Pathology, SRM Medical College Hospital and Research Centre, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
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Raveendran RK, Singh NK. Effect of Electrode Montage on Frequency Tuning Properties of Air-Conducted Ocular Vestibular-Evoked Myogenic Potential. Ear Hear 2024:00003446-990000000-00330. [PMID: 39292858 DOI: 10.1097/aud.0000000000001560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2024]
Abstract
OBJECTIVES The use of a 500 Hz tone burst over other frequencies was adopted for the clinical recording of ocular vestibular-evoked myogenic potential (oVEMP) on the basis that this stimulus frequency produces larger response amplitudes (frequency tuning) than the other frequencies. However, the possibility of reflex contamination due to a spatially displaced reference electrode from the muscle of the response origin raises questions about using an infraorbital (IO) montage. Nonetheless, the belly-tendon (BT) montage, which places both the recording electrodes over the inferior oblique muscle, increases the chances of obtaining a response with greater contribution from the inferior oblique muscle. However, whether this response continues to show the frequency tuning to 500 Hz is not known. Therefore, the present study aimed to examine the frequency tuning of oVEMP using various electrode montages. DESIGN Thirty-eight young adults underwent simultaneous oVEMP recording from IO, BT, chin-referenced, and sternum-referenced electrode montages in response to 250, 500, 750, 1000, 1500, 2000, 3000, and 4000 Hz tone bursts. RESULTS The frequency tuning most often coincided with a 750-Hz tone burst irrespective of the montage, with the BT montage exhibiting significantly higher response rates and larger peak to peak amplitudes than other montages (p < 0.008). Further, there was a "substantial" agreement on frequency tuning between BT and IO montages. CONCLUSIONS With better response rates and response amplitudes yet similar frequency tuning to the IO montage, the BT montage can be a better option for the clinical recording of oVEMP across frequencies.
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Affiliation(s)
- Rajesh Kumar Raveendran
- Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Mysuru 570006, India
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Chang CM, Lo WC, Young YH, Liao LJ, Cheng PC, Cheng PW. Concurrent abnormalities in galvanic cervical and ocular vestibular-evoked myogenic potentials as a predictive marker for prolonged dizziness in vestibular neuritis. Acta Otolaryngol 2024; 144:423-428. [PMID: 39302637 DOI: 10.1080/00016489.2024.2397064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 08/16/2024] [Accepted: 08/20/2024] [Indexed: 09/22/2024]
Abstract
BACKGROUND Despite the growing use of cervical (cVEMP) and ocular (oVEMP) VEMP tests, their effectiveness in predicting chronic dizziness in vestibular neuritis (VN) patients remains unclear. Our research examines the link between long-lasting dizziness and inner ear assessments, encompassing VEMPs induced by air-conducted sound (ACS), bone-conducted vibration (BCV), and galvanic vestibular stimulation (GVS). OBJECTIVES This study explores prognostic markers by examining the relationship between the persistence of dizziness symptoms and various inner ear test findings in VN patients. MATERIAL AND METHODS A retrospective cohort of 60 unilateral VN patients underwent comprehensive audiovestibular tests, including pure tone audiometry, cVEMP and oVEMP induced by ACS, BCV, GVS, and caloric tests. Patient subgroups were established based on dizziness duration: short-term (<3 months) and long-term (≥3 months). RESULTS No substantial correlation existed between the dizziness duration and the outcomes of any particular single inner ear test. However, patients exhibiting concurrent abnormal GVS-cVEMP and GVS-oVEMP were more likely to experience prolonged dizziness, indicating more extensive vestibular system involvement. CONCLUSIONS Concurrent abnormalities in GVS-cVEMP and GVS-oVEMP may indicate a higher chance of long-term dizziness in VN. SIGNIFICANCE This study identifies concurrent abnormalities in GVS-cVEMP and GVS-VEMP as a potential prognostic marker for prolonged dizziness in VN.
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Affiliation(s)
- Chih-Ming Chang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Wu-Chia Lo
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Medicine, Yuan Ze University, Taoyuan, Taiwan
| | - Yi-Ho Young
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Li-Jen Liao
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Electrical Engineering, Yuan Ze University, Taoyuan, Taiwan
| | - Ping-Chia Cheng
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - Po-Wen Cheng
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
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Longridge NS, Mallinson AI. A New Perspective to Interpret How the Vestibular Efferent System Correlates the Complexity of Routine Balance Maintenance with Management of Emergency Fall Prevention Strategies. Audiol Res 2024; 14:518-544. [PMID: 38920965 PMCID: PMC11200673 DOI: 10.3390/audiolres14030044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 06/27/2024] Open
Abstract
Bipedalism is unique among mammals. Until modern times, a fall and resulting leg fracture could be fatal. Balance maintenance after a destabilizing event requires instantaneous decision making. The vestibular system plays an essential role in this process, initiating an emergency response. The afferent otolithic neural response is the first directionally oriented information to reach the cortex, and it can then be used to initiate an appropriate protective response. Some vestibular efferent axons feed directly into type I vestibular hair cells. This allows for rapid vestibular feedback via the striated organelle (STO), which has been largely ignored in most texts. We propose that this structure is essential in emergency fall prevention, and also that the system of sensory detection and resultant motor response works by having efferent movement information simultaneously transmitted to the maculae with the movement commands. This results in the otolithic membrane positioning itself precisely for the planned movement, and any error is due to an unexpected external cause. Error is fed back via the vestibular afferent system. The efferent system causes macular otolithic membrane movement through the STO, which occurs simultaneously with the initiating motor command. As a result, no vestibular afferent activity occurs unless an error must be dealt with.
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Affiliation(s)
| | - Arthur I. Mallinson
- Division of Otolaryngology, Department of Surgery, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9, Canada
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Fujiwara K, Morita S, Hoshino K, Fukuda A, Takeda H, Nakamaru Y, Homma A. Evaluation of Semicircular Canal Function Using Video Head Impulse Test in Patients With Peripheral Vestibular Disorders Without Nystagmus. Cureus 2024; 16:e62786. [PMID: 39036179 PMCID: PMC11260217 DOI: 10.7759/cureus.62786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2024] [Indexed: 07/23/2024] Open
Abstract
Objectives This study aims to evaluate semicircular canal function using video head impulse test (vHIT) in patients with peripheral vestibular disorders without nystagmus. Methods Patients who underwent vHIT were enrolled in this study, and the proportion of abnormal findings on vHIT in patients without nystagmus was investigated. In addition, the results of vestibular testing were investigated in cases in which both vHIT and caloric testing were performed in patients without nystagmus. Results Forty-six patients (23.4%) of 197 patients who had no abnormal findings on the nystagmus tests, including the gaze nystagmus test, positional nystagmus test, and positioning nystagmus test, showed dysfunction in at least one semicircular canal on vHIT. The most frequent diagnosis was vestibular schwannoma (14/46, 30.4%), and cases with bilateral vestibular dysfunction were also included (12/46, 26.1%). A disorganized pattern of catch-up saccade was observed more frequently in patients with subjective symptoms of dizziness/vertigo compared to those without subjective symptoms. Although the sensitivity of vHIT was low compared to caloric testing, vHIT could detect isolated vertical canal dysfunction not detected by caloric testing. Conclusions vHIT is considered to be a useful test for patients without nystagmus, as vHIT could detect abnormalities in approximately one-quarter of patients without nystagmus. vHIT is considered to be one of the first tests to be performed following nystagmus testing, including the gaze nystagmus test, the positional nystagmus test, and the positioning nystagmus test. On the other hand, there are some cases in which vHIT shows no abnormality while caloric testing shows canal paresis. It is necessary to perform vHIT, bearing in mind that there are abnormalities that cannot be detected by vHIT alone.
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Affiliation(s)
- Keishi Fujiwara
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
| | - Shinya Morita
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
| | - Kimiko Hoshino
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
| | - Atsushi Fukuda
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
| | - Hideaki Takeda
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
| | - Yuji Nakamaru
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
| | - Akihiro Homma
- Department of Otolaryngology - Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, JPN
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7
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Wang C, Young AS, Raj C, Bradshaw AP, Nham B, Rosengren SM, Calic Z, Burke D, Halmagyi GM, Bharathy GK, Prasad M, Welgampola MS. Machine learning models help differentiate between causes of recurrent spontaneous vertigo. J Neurol 2024; 271:3426-3438. [PMID: 38520520 DOI: 10.1007/s00415-023-11997-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/10/2023] [Accepted: 09/13/2023] [Indexed: 03/25/2024]
Abstract
BACKGROUND Vestibular migraine (VM) and Menière's disease (MD) are two common causes of recurrent spontaneous vertigo. Using history, video-nystagmography and audiovestibular tests, we developed machine learning models to separate these two disorders. METHODS We recruited patients with VM or MD from a neurology outpatient facility. One hundred features from six "feature subsets": history, acute video-nystagmography and four laboratory tests (video head impulse test, vestibular-evoked myogenic potentials, caloric testing and audiogram) were used. We applied ten machine learning algorithms to develop classification models. Modelling was performed using three "tiers" of data availability to simulate three clinical settings. "Tier 1" used all available data to simulate the neuro-otology clinic, "Tier 2" used only history, audiogram and caloric test data, representing the general neurology clinic, and "Tier 3" used history alone as occurs in primary care. Model performance was evaluated using tenfold cross-validation. RESULTS Data from 160 patients with VM and 114 with MD were used for model development. All models effectively separated the two disorders for all three tiers, with accuracies of 85.77-97.81%. The best performing algorithms (AdaBoost and Random Forest) yielded accuracies of 97.81% (95% CI 95.24-99.60), 94.53% (91.09-99.52%) and 92.34% (92.28-96.76%) for tiers 1, 2 and 3. The best feature subset combination was history, acute video-nystagmography, video head impulse test and caloric testing, and the best single feature subset was history. CONCLUSIONS Machine learning models can accurately differentiate between VM and MD and are promising tools to assist diagnosis by medical practitioners with diverse levels of expertise and resources.
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Affiliation(s)
- Chao Wang
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
- Central Clinical School, University of Sydney, Sydney, Australia
| | - Allison S Young
- Central Clinical School, University of Sydney, Sydney, Australia
| | - Chahat Raj
- School of Computer Science, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, Australia
| | - Andrew P Bradshaw
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Benjamin Nham
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
- Central Clinical School, University of Sydney, Sydney, Australia
| | - Sally M Rosengren
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
- Central Clinical School, University of Sydney, Sydney, Australia
| | - Zeljka Calic
- Department of Neurophysiology, Liverpool Hospital, Sydney, Australia
- South Western Sydney Clinical School, University of New South Wales, Sydney, Australia
| | - David Burke
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
- Central Clinical School, University of Sydney, Sydney, Australia
| | - G Michael Halmagyi
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
- Central Clinical School, University of Sydney, Sydney, Australia
| | - Gnana K Bharathy
- School of Computer Science, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, Australia
| | - Mukesh Prasad
- School of Computer Science, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, Australia
| | - Miriam S Welgampola
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia.
- Central Clinical School, University of Sydney, Sydney, Australia.
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Govender S, Hochstrasser D, Todd NP, Colebatch JG. Head Orientation Modulates Vestibular Cerebellar Evoked Potentials (VsCEPs) and Reflexes Produced by Impulsive Mastoid and Midline Skull Stimulation. CEREBELLUM (LONDON, ENGLAND) 2024; 23:957-972. [PMID: 37466894 PMCID: PMC11102417 DOI: 10.1007/s12311-023-01587-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/07/2023] [Indexed: 07/20/2023]
Abstract
The cerebellum plays a critical role in the modulation of vestibular reflexes, dependent on input from proprioceptive afferents. The mechanism of this cerebellar control is not well understood. In a sample of 11 healthy human subjects, we investigated the effects of head orientation on ocular, cervical, postural and cerebellar short latency potentials evoked by impulsive stimuli applied at both mastoids and midline skull sites. Subjects were instructed to lean backwards with the head positioned straight ahead or held rotated in different degrees of yaw towards the right and left sides. Impulsive mastoid stimulation, a potent method of utricular stimulation, produced localised vestibular cerebellar evoked potentials (VsCEPs: P12-N17) which were strongly modulated by head orientation. The response was larger on the side opposite to the direction of head rotation and with stimulation on the side of rotation. In contrast, ocular VEMPs (oVEMPs: n10-p16) were present but showed little change with head posture, while cervical VEMPs (cVEMPs: p15-n23) were larger with the head held rotated away from the side of the recording. Postural effects with lateral vestibular stimulation were strongly modulated by head rotation, with more powerful effects occurring bilaterally with stimulation on the side of rotation. The duration of the postural EMG changes was similar to the post-excitation inhibition of the electrocerebellogram (ECeG), consistent with cerebellar participation. We conclude that head rotation selectively affects evoked vestibular reflexes towards different targets, consistent with their physiological roles. Changes in VsCEPs may contribute to the modulation of postural reflexes by the cerebellum.
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Affiliation(s)
- Sendhil Govender
- School of Clinical Medicine, Randwick Clinical Campus, University of New South Wales, Sydney, NSW, 2052, Australia
- Neuroscience Research Australia, University of New South Wales, Randwick, Sydney, NSW, 2052, Australia
| | - Daniel Hochstrasser
- MARCS Institute for Brain, Behaviour and Development, Western Sydney University, Westmead, Sydney, NSW, 2145, Australia
| | - Neil Pm Todd
- School of Clinical Medicine, Randwick Clinical Campus, University of New South Wales, Sydney, NSW, 2052, Australia
| | - James G Colebatch
- School of Clinical Medicine, Randwick Clinical Campus, University of New South Wales, Sydney, NSW, 2052, Australia.
- Neuroscience Research Australia, University of New South Wales, Randwick, Sydney, NSW, 2052, Australia.
- Institute of Neurological Sciences, Prince of Wales Hospital, Randwick, Sydney, NSW, 2031, Australia.
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Fröhlich L, Löffler LB. [Practical instructions for recording vestibular evoked myogenic potentials]. HNO 2024; 72:377-388. [PMID: 38536466 DOI: 10.1007/s00106-024-01446-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2024] [Indexed: 04/26/2024]
Abstract
Recording of vestibular evoked myogenic potentials (VEMPs) is a well-established method for functional diagnostics of the otolith organs. VEMPs are vestibular reflexes of the sacculus und utriculus to acoustic stimulation by air-conducted sound or bone-conducted vibration and are recorded by surface electrodes from the cervical (cVEMP) and ocular (oVEMP) muscles. The results of VEMP recordings are part of the neuro-otologic test battery and enable diagnosis of various vestibular disorders or differentiation between non-vestibular and peripheral vestibular vertigo. However, the methods for recording VEMPs vary substantially, although recording and stimulation parameters as well as methods of data analysis have a significant influence on the results. This article provides an overview of recommended parameters as well as practical instructions for the recording, analysis, and interpretation of VEMPs.
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Affiliation(s)
- Laura Fröhlich
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Universitätsklinikum Bonn (UKB), Venusberg-Campus 1, 53127, Bonn, Deutschland.
| | - Lea Babette Löffler
- Hals‑, Nasen‑, Ohrenheilkunde, Kopf- und Halschirurgie, Heinrich-Braun-Klinikum gemeinnützige GmbH, Zwickau, Deutschland
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10
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Scherer F, Beule AG, Lütkenhöner B, Heitkötter F, Rudack C. Measurement of Ocular Vestibular Evoked Myogenic Potentials: Nasion Reference Montage as an Alternative to the Clinical Standard Montage. Otol Neurotol 2024; 45:e57-e65. [PMID: 38085768 DOI: 10.1097/mao.0000000000004046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
OBJECTIVE To compare two novel electrode montages for ocular, vestibular evoked myogenic potential using single-nasion reference electrodes with the clinical standard montage. STUDY DESIGN Randomized crossover experiment. SETTING Tertiary referral center. PARTICIPANTS Sixty healthy participants. INTERVENTION Normal hearing and vestibular function were confirmed with an extensive test-battery. All ocular, vestibular evoked myogenic potential settings were measured with air-conducted tone bursts at 100-dB normal hearing level and a frequency of 500 Hz. Three electrode montages were measured in randomized order: the clinical standard montage ("S"), the nasion reference montage ("N"), and the nasion reference montage with a more lateral active electrode ("L"). Upgaze was standardized to 35 degrees. MAIN OUTCOME MEASURES Detection rate, latency of N1 and P1, peak-to-peak amplitude of N1 and P1, signal-to-noise ratio (SNR), asymmetry ratio (AR), concordance of expert assessment, and reliability. RESULTS All electrode montages showed detection rates greater than 90%. Latencies for "L" were shorter than for "S" and "N." Amplitudes and SNR for "S" and "N" were higher than for "L," whereas the values for "S" and "N" did not differ significantly. For AR, no significant differences between the montages were assessed. Concordance of experts ranged from 78% for "L" and 89.8% for "N." All montages provided excellent day-to-day reliability (intraclass correlation coefficient ≥0.9) for amplitudes and SNR. CONCLUSIONS Montage N could be a useful alternative to the clinical standard montage: although results are roughly equivalent, montage N requires one less electrode to do so.
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Affiliation(s)
- Florian Scherer
- Department of Otorhinolaryngology, University Hospital Münster, Münster
| | | | - Bernd Lütkenhöner
- Department of Otorhinolaryngology, University Hospital Münster, Münster
| | - Felix Heitkötter
- Department of Otorhinolaryngology, University Hospital Münster, Münster
| | - Claudia Rudack
- Department of Otorhinolaryngology, University Hospital Münster, Münster
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11
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Nagarajan A, Sinha SK. Masseter Vestibular evoked myogenic potentials: A new tool to assess the vestibulomasseteric reflex pathway. J Otol 2024; 19:46-54. [PMID: 38313757 PMCID: PMC10837556 DOI: 10.1016/j.joto.2023.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/20/2023] [Accepted: 12/21/2023] [Indexed: 02/06/2024] Open
Abstract
Purpose This review article provides the readers with an in-depth insight in understanding and interpreting various research literatures on the masseter vestibular evoked myogenic potentials (mVEMP). The article also reviews the contemporary researches involving the clinical applications of the mVEMP. Conclusions Masseter VEMP is an evolving yet clinically promising neuro-otology test tool that has recently gained more research interest and is considered an additional tool to diagnose various vestibular disorders. Masseter VEMP assesses the functional integrity of the acoustic-masseteric and vestibulo-masseteric reflex pathways. The mVEMP could be used as a complementary test to evaluate the same peripheral generator as the cervical VEMP but a different central pathway i.e., vestibulo-trigeminal pathway. Various research studies that have experimented on parameters such as the effect of different electrode montages (zygomatic vs mandibular configurations), stimulation rates, filter settings and stimuli used to evoke mVEMP have been discussed in this article that could assist in the optimization of a comprehensive clinical protocol. The latency and the amplitude of mVEMP waveforms serve as significant parameters in differentiating normals from those of the clinical populations. Along with the cVEMPs and oVEMPs, mVEMP might help diagnose brainstem lesions in REM Sleep behaviour disorders, Multiple Sclerosis and Parkinson's disease. However, further studies are required to probe in this area of research.
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12
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Raveendran RK, Singh NK. Electrode Montage Induced Changes in Air-Conducted Ocular Vestibular-Evoked Myogenic Potential. Ear Hear 2024; 45:227-238. [PMID: 37608435 DOI: 10.1097/aud.0000000000001419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
OBJECTIVES Stimulus and recording parameters are pivotal for shaping the ocular vestibular-evoked myogenic potential (oVEMP). In the last decade, several attempts were made to identify the optimum electrode placement site to improve the oVEMP responses. A vast majority of these found larger response amplitudes for alternate electrode montages like belly-tendon (BT), chin-referenced (CR), and/or sternum-referenced montages than the clinically used infra-orbital montage. However, no study has yet compared all alternate electrode montages in a simultaneous recording paradigm to eliminate other confounding factors. Also, no study has compared all of them for their test-retest reliability, waveform morphology, and signal-to-noise ratio. Therefore, the decision on which among these electrode montages is best suited for oVEMP acquisition remains opaque. The present study aimed to investigate the effects of various electrode montages on oVEMP's response parameters and to determine the test-retest reliability of each of these in clinically healthy individuals using a simultaneous recording paradigm. DESIGN This study had a within-subject experimental design. Fifty-five young healthy adults (age range: 20-30 years) underwent contralateral oVEMP recording using infra-orbital, BT, chin-referenced, and sternum-referenced electrode montages simultaneously using a four-channel evoked potential system. RESULTS BT montage had a significantly shorter latency, larger amplitude, higher signal-to-noise ratio, and better morphology than other alternate montages ( p < 0.008). Further, all electrode montages of the current study showed fair/moderate to excellent test-retest reliability. CONCLUSIONS By virtue of producing significantly better response parameters than the other electrode montages, BT montage seems better suited to the recording of oVEMP than the known electrode montages thus far.
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Affiliation(s)
- Rajesh Kumar Raveendran
- Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Mysore, Karnataka, India
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Hong JP, Lee JY, Kim MB. Vestibular mapping in Ramsay-Hunt syndrome and idiopathic sudden sensorineural hearing loss. Eur Arch Otorhinolaryngol 2023; 280:5251-5258. [PMID: 37210462 DOI: 10.1007/s00405-023-08029-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/15/2023] [Indexed: 05/22/2023]
Abstract
PURPOSE To observe vestibular impairment patterns in patients with Ramsay Hunt syndrome with dizziness (RHS_D) and sudden sensorineural hearing loss with dizziness (SSNHL_D) using hierarchical cluster analysis (HCA) to interpret results with possible mechanisms. METHODS The data of 30 RHS_D and 81 SSNHL_D patients from January 2017 to August 2022 in a single tertiary referral center were retrospectively analyzed. Video head impulse test (vHIT) and vestibular evoked myogenic potential (VEMP) were used for vestibular analysis of peripheral vestibular organs, and the results of vHIT and VEMP were analyzed. HCA was used to analyze vestibular impairment patterns. RESULTS In RHS_D patients, the lateral semicircular canal (LSCC) was the most impaired semicircular canal (SCC), followed by the anterior semicircular canal (ASCC) and the posterior semicircular canal (PSCC), and the utricle was more impaired than the saccule. In SSNHL_D patients, the PSCC was the most impaired SCC, followed by the LSCC and the ASCC, and the utricle was more impaired than the saccule. In HCA of RHS_D patients, the ASCC and utricle were initially clustered, followed by the LSCC, PSCC and saccule in order. In the HCA of SSNHL_D patients, the PSCC was solely merged and independently clustered. CONCLUSION There were different patterns of vestibular impairments between RHS_D and SSNHL_D patients. The vestibular analysis and HCA results of SSNHL_D showed tendency of skip lesion, which could be explained by vascular pathophysiology.
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Affiliation(s)
- Joon-Pyo Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea
| | - Jung-Yup Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea
| | - Min-Beom Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, Republic of Korea.
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Janky K, Steyger PS. Mechanisms and Impact of Aminoglycoside-Induced Vestibular Deficits. Am J Audiol 2023; 32:746-760. [PMID: 37319406 PMCID: PMC10721243 DOI: 10.1044/2023_aja-22-00199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/26/2023] [Accepted: 03/06/2023] [Indexed: 06/17/2023] Open
Abstract
PURPOSE Acquired vestibulotoxicity from hospital-prescribed medications such as aminoglycoside antibiotics affects as many as 40,000 people each year in North America. However, there are no current federally approved drugs to prevent or treat the debilitating and permanent loss of vestibular function caused by bactericidal aminoglycoside antibiotics. This review will cover our current understanding of the impact of, and mechanisms underlying, aminoglycoside-induced vestibulotoxicity and highlight the gaps in our knowledge that remain. CONCLUSIONS Aminoglycoside-induced vestibular deficits have long-term impacts on patients across the lifespan. Additionally, the prevalence of aminoglycoside-induced vestibulotoxicity appears to be greater than cochleotoxicity. Thus, monitoring for vestibulotoxicity should be independent of auditory monitoring and encompass patients of all ages from young children to older adults before, during, and after aminoglycoside therapy.
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Affiliation(s)
- Kristen Janky
- Department of Audiology, Boys Town National Research Hospital, Omaha, NE
| | - Peter S. Steyger
- Bellucci Translational Hearing Center, Creighton University, Omaha, NE
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Rosa MS, Campagnoli M, Masnaghetti D, Taranto F, Pisani G, Garzaro M, Aluffi Valletti P. Clinical and Prognostic Implications of Cervical and Ocular Vestibular Evoked Myogenic Potentials (cVEMP and oVEMP) in Benign Paroxysmal Positional Vertigo (BPPV): A Prospective Study. Audiol Res 2023; 13:700-709. [PMID: 37736942 PMCID: PMC10514798 DOI: 10.3390/audiolres13050061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023] Open
Abstract
OBJECTIVE Several studies have investigated the efficacy of VEMP (vestibular evoked myogenic potential) in patients with vestibular disorders and BPPV (benign paroxysmal positional vertigo). However, previous data were inconclusive. The aim of this study was to investigate the difference in latency, amplitude P1-N1, asymmetry ratio (AR), and cervical/ocular-VEMP values between BPPV patients and healthy controls. METHODS 125 healthy subjects and 42 BPPV patients were prospectively enrolled in the study. In both groups, c/oVEMP tests with 500 Hz tone-burst stimuli were performed. Latencies P1, N1 peaks, and corrected amplitudes (CA) were measured, and AR was calculated. RESULTS in the BPPV group, 14.29% of patients lacked oVEMPs that recovered after therapy. N1 latencies were significantly elongated, and 50% of patients had pathological AR; this value normalized at follow-up sessions. In addition, there was a reduction in CA in the pathologic ear compared to healthy ears (p = 0.04) and compared to healthy controls (p = 0.01). For cVEMP, a significant reduction in latency-P1 was observed in BPPV patients compared to controls; no significant differences were observed for P1, N1, and CA values between the two ears. The cVEMPs were absent in 14.29% of BPPV patients (AR > 35) that recovered after therapy. CONCLUSION We identified several abnormal c/oVemp values in BPPV patients compared with healthy controls, with most changes in values occurring in oVEMPs, suggesting that utricular dysfunction may be more common than saccular. In addition, patients with oVEMP alteration showed later clinical recovery, suggesting a possible prognostic role of the test.
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Fujiwara Y, Fujiwara K, Motegi H, Ishi Y, Morita S, Hoshino K, Fukuda A, Nakamaru Y, Homma A. Quantitative Evaluations of Vestibular Function in Patients With Petrous Apex Cholesterol Granulomas Treated With an Endoscopic Transsphenoidal Approach: A Report of Two Cases. Otol Neurotol 2023; 44:809-812. [PMID: 37464454 DOI: 10.1097/mao.0000000000003961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
OBJECTIVE We report two cases of petrous apex cholesterol granuloma (PACG) treated with an endoscopic transsphenoidal approach. Vestibular functions of the two patients were evaluated quantitatively by video Head Impulse Test (vHIT) and/or vestibular evoked myogenic potentials (VEMPs). PATIENTS Two patients with PACG who experienced episodes of dizziness are presented. INTERVENTION An endoscopic transsphenoidal approach to PACG. MAIN OUTCOME MEASURE The preoperative and postoperative vestibular functions as evaluated by vHIT and VEMP. RESULTS Two cases of PACG were treated by a transsphenoidal approach. The internal auditory canal was compressed by the PACG in both cases. The patients both experienced episodes of dizziness before surgery and preoperative vestibular testing including vHIT and VEMP indicated dysfunction of vestibular nerves. After surgery, their symptoms were completely resolved, and the vestibular testing results were improved. CONCLUSIONS This article is noteworthy for being the first to publish quantitative vestibular function testing for patients with PACG with vestibular dysfunction. PACG may show various symptoms, with dizziness being one of the most common symptoms. In cases in which the internal auditory canal is compressed by the PACG, vestibular functions should be evaluated by vHIT and VEMP. In the present cases, dizziness was found to be resolved by surgery to release the compression on internal auditory canal. Based on the present cases, the transsphenoidal approach is considered to be both safe and effective.
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Affiliation(s)
- Yuuki Fujiwara
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
| | - Keishi Fujiwara
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
| | - Hiroaki Motegi
- Department of Neurosurgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yukitomo Ishi
- Department of Neurosurgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Shinya Morita
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
| | - Kimiko Hoshino
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
| | - Atsushi Fukuda
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
| | - Yuji Nakamaru
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
| | - Akihiro Homma
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
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Singh NK, Kumar P, Jagadish N, Mendhakar A, Mahajan Y. Utility of Inter-Frequency Amplitude Ratio of Vestibular-Evoked Myogenic Potentials in Identifying Meniere's Disease: A Systematic Review and Meta-Analysis. Ear Hear 2023; 44:940-948. [PMID: 36859775 DOI: 10.1097/aud.0000000000001343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
OBJECTIVES A recently devised parameter of vestibular-evoked myogenic potential (VEMP) based on the principles of frequency tuning is the inter-frequency amplitude ratio (IFAR). It refers to the ratio of the amplitude of 1000 Hz tone burst evoked VEMP to 500 Hz evoked tone burst. A pathology like Meniere's disease changes the frequency response and alters the frequency tuning of the otolith organs. Because IFAR is based on the principle of frequency tuning of VEMP, it is likely to help identify Meniere's disease. Few studies in the last decade have investigated the utility of IFAR in identifying Meniere's disease. However, a systematic review and a meta-analysis on IFAR in Meniere's disease are lacking. The present study investigates whether the IFAR of VEMP helps identify Meniere's disease and differentiates it from healthy ears and other vestibular pathologies. DESIGN The present study is a systematic review and a meta-analysis. The studies investigating the IFAR of cervical and ocular VEMPs in Meniere's disease, healthy controls, and other vestibular pathologies were searched across research databases such as PubMed, Science Direct, and Scopus. The search strategy was developed using the PICO (population, intervention, comparison, and outcomes) format, and Medical Subject Headings (MeSH) terms and Boolean operators were employed. The systematic review was performed using the Rayyan software, whereas the Review Manager software was used to carry out the meta-analysis. A total of 16,605 articles were retrieved from the databases. After the duplicate removal, 2472 articles remained. These were eliminated using title screening, abstract screening, and full-length inspections. A total of nine articles were found eligible for quality assessment and meta-analysis, and the New Castle-Ottawa Scale was used for quality assessment. After the data extraction, 24 six articles were found to have the desired data format for the meta-analysis. RESULTS The results showed significantly higher IFAR in the affected ears of individuals in the Meniere's disease group than in the control group's unaffected ears. There was no significant difference between the unaffected ears of individuals in the Meniere's disease group and the ears of the control group. The only study on Meniere's disease and benign paroxysmal positional vertigo found significantly larger ocular VEMP IFAR in ears with Meniere's disease than in benign paroxysmal positional vertigo. CONCLUSIONS This systematic review and meta-analysis found IFAR efficient in differentiating Meniere's disease from healthy controls. We also found an enhanced IFAR as a potential marker for Meniere's disease. However, more investigations are needed to confirm the utility of an enhanced IFAR value in the exclusive identification of Meniere's disease.
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Affiliation(s)
- Niraj Kumar Singh
- Department of Audiology, All India Institute of Speech and Hearing (AIISH), University of Mysore, Mysore, India
| | - Prawin Kumar
- Department of Audiology, All India Institute of Speech and Hearing (AIISH), University of Mysore, Mysore, India
| | - Nirmala Jagadish
- Department of Audiology, All India Institute of Speech and Hearing (AIISH), University of Mysore, Mysore, India
| | - Akshay Mendhakar
- Department of Audiology, All India Institute of Speech and Hearing (AIISH), University of Mysore, Mysore, India
| | - Yatin Mahajan
- The MARCS Institute for Brain, Behaviour, and Development, Sydney, Australia
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Tarnutzer AA, Seo T, Fujimoto C, Straumann D, Murofushi T. Editorial: Impacts of VEMP and VHIT on the diagnosis of vestibular diseases. Front Neurol 2023; 14:1244367. [PMID: 37492850 PMCID: PMC10364594 DOI: 10.3389/fneur.2023.1244367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/27/2023] Open
Affiliation(s)
- Alexander Andrea Tarnutzer
- Department of Neurology, Cantonal Hospital of Baden, Baden, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Toru Seo
- Department of Otolaryngology, St. Marianna University Yokohama Seibu Hospital, Yokohama, Japan
| | - Chisato Fujimoto
- Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Dominik Straumann
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
- Department of Neurology, University Hospital Zurich, Zurich, Switzerland
| | - Toshihisa Murofushi
- Department of Otolaryngology, Teikyo University School of Medicine, Mizonokuchi Hospital, Kawasaki, Japan
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Hannigan IP, Nham B, Wang C, Rosengren SM, Kwok BYC, McGarvie LA, Reid NM, Curthoys IS, Halmágyi GM, Welgampola MS. The Relationship between the Subjective Visual Horizontal and Ocular Vestibular Evoked Myogenic Potentials in Acute Vestibular Neuritis. Otol Neurotol 2023; 44:e419-e427. [PMID: 37254257 DOI: 10.1097/mao.0000000000003909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECT Vestibular evoked myogenic potentials (VEMPs) and the subjective visual horizontal (SVH) (or vertical [SVV]) have both been considered tests of otolith function: ocular-VEMPs (oVEMPs) utricular function, cervical VEMPs (cVEMPs) saccular function. Some studies have reported association between decreased oVEMPs and SVH, whereas others have not. DESIGN A retrospective study of test results. SETTING A tertiary, neuro-otology clinic, Royal Prince Alfred Hospital, Sydney, Australia. METHOD We analyzed results in 130 patients with acute vestibular neuritis tested within 5 days of onset. We sought correlations between the SVH, oVEMPs, and cVEMPs to air-conducted (AC) and bone-conducted (BC) stimulation. RESULTS The SVH deviated to the side of lesion, in 123 of the 130 AVN patients, by 2.5 to 26.7 degrees. Ninety of the AVN patients (70%) had abnormal oVEMPs to AC, BC or both stimuli, on the AVN side (mean asymmetry ratio ± SD [SE]): (64 ± 45.0% [3.9]). Forty-three of the patients (35%) had impaired cVEMPs to AC, BC or both stimuli, on the AVN side, [22 ± 41.6% (4.1)]. The 90 patients with abnormal oVEMP values also had abnormal SVH. Correlations revealed a significant relationship between SVH offset and oVEMP asymmetry (r = 0.80, p < 0.001) and a weaker relationship between SVH offset and cVEMP asymmetry (r = 0.56, p < 0.001). CONCLUSIONS These results indicate that after an acute unilateral vestibular lesion, before there has been a chance for vestibular compensation to occur, there is a significant correlation between the SVH, and oVEMP results. The relationship between SVH offset and oVEMP amplitude suggests that both tests measure utricular function.
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Affiliation(s)
- Imelda P Hannigan
- Central Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | | | | | | | | | | | - Nicole M Reid
- Neurology Department, Royal Prince Alfred Hospital, Sydney, Australia
| | - Ian S Curthoys
- Vestibular Research Laboratory, School of Psychology, University of Sydney, Sydney, Australia
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Mat Q, Deggouj N, Duterme JP, Tainmont S, Lelubre C, Manto M. Influence of the Electrode Montage to Detect Ocular Vestibular Evoked Myogenic Potentials. Otol Neurotol 2023; 44:e412-e418. [PMID: 37231530 PMCID: PMC10289211 DOI: 10.1097/mao.0000000000003897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To compare ocular vestibular evoked myogenic potentials (oVEMPs) obtained with three different electrode montages (infra-orbital vs belly-tendon vs chin) in a group of healthy subjects. To assess the electrical activity recorded at the level of the reference electrode in the belly-tendon and chin montages. STUDY DESIGN Prospective study. SETTING Tertiary referral center. PATIENTS Twenty-five healthy adult volunteers. INTERVENTIONS Each ear was tested separately via air-conducted sound (500 Hz Narrow Band CE-Chirps at 100 dB nHL) for recording contralateral myogenic responses. Recording conditions were randomized. MAIN OUTCOME MEASURES n1-p1 amplitudes values, interaural amplitude asymmetry ratios (ARs) and response rates. RESULTS The belly-tendon electrode montage (BTEM) produced larger amplitudes than the chin ( p = 0.008) and the IOEM (infra-orbital electrode montage; p < 0.001). The chin montage displayed larger amplitudes than the IOEM ( p < 0.001). The interaural amplitude asymmetry ratios (ARs) were not affected by the different electrode montages ( p = 0.549). In 100% of cases, oVEMPs were detected bilaterally with the BTEM which is higher than with the chin and the IOEM ( p < 0.001; p = 0.020, respectively). We did not record any VEMP when placing the active electrode on the contralateral internal canthus or the chin and the reference electrode on the dorsum of the hand. CONCLUSIONS The BTEM increased the amplitudes recorded and response rate in healthy subjects. No positive or negative reference contamination was observed with the belly-tendon or chin montages.
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Affiliation(s)
- Quentin Mat
- Department of Otorhinolaryngology, C.H.U. Charleroi, Charleroi 6042, Belgium
- Faculty of Medicine and Pharmacy, University of Mons (UMons), Mons 7000, Belgium
| | - Naïma Deggouj
- Department of Otorhinolaryngology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc, UCLouvain (UCL), Brussels 1200, Belgium
| | - Jean-Pierre Duterme
- Department of Otorhinolaryngology, C.H.U. Charleroi, Charleroi 6042, Belgium
| | - Sophie Tainmont
- Department of Otorhinolaryngology, C.H.U. Charleroi, Charleroi 6042, Belgium
| | - Christophe Lelubre
- Faculty of Medicine and Pharmacy, University of Mons (UMons), Mons 7000, Belgium
- Department of Internal Medicine, C.H.U. Charleroi, Charleroi 6042, Belgium
| | - Mario Manto
- Faculty of Medicine and Pharmacy, University of Mons (UMons), Mons 7000, Belgium
- Department of Neurology, Médiathèque Jean Jacquy, C.H.U. Charleroi, Charleroi 6042, Belgium
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Argaet EC, Kwok BYC, Bradley J, Young AS, Nham B, Calic Z, Taylor RL, Pogson JM, Reid N, Kong JHK, Flanagan S, Halmagyi GM, Rosengren SM, Welgampola MS. Subjective visual horizontal correlates better with ocular than with cervical vestibular evoked myogenic potentials. Clin Neurophysiol 2023; 152:1-10. [PMID: 37257318 DOI: 10.1016/j.clinph.2023.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 04/03/2023] [Accepted: 04/24/2023] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To examine the relationship between widely used otolith function tests: the Subjective Visual Horizontal (SVH) and Vestibular Evoked Myogenic Potentials (VEMP). METHODS A retrospective analysis was performed on 301 patients who underwent SVH, ocular and cervical VEMP (oVEMP and cVEMP) tests on the same day. Correlations between the mean SVH tilt and amplitude asymmetry ratios for bone-conducted (BC) oVEMP and air-conducted (AC) cVEMP were examined. Diagnoses included vestibular neuritis, stroke, vestibular migraine, Meniere's disease, sudden sensorineural hearing loss (SSNHL) and vestibular schwannoma. RESULTS SVH results were concordant with the oVEMP in 64% of cases and the cVEMP in 51%. Across all patients, SVH demonstrated a significant moderate correlation with BC oVEMP amplitude asymmetry ratios (r = 0.55, p < 0.001) and a weak correlation with AC cVEMP amplitude asymmetry ratios (r = 0.35, p < 0.001). A stronger correlation between SVH and oVEMPs was observed in patients with vestibular neuritis (r = 0.67, p < 0.001) and SSNHL (r = 0.76, p = 0.001). CONCLUSIONS SVH correlates better with oVEMP than cVEMP symmetry. SIGNIFICANCE This finding reinforces the hypothesis of a common utricular origin for both SVH and oVEMPs which is distinct from the saccular origin of cVEMPs.
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Affiliation(s)
- Emma C Argaet
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia
| | - Belinda Y C Kwok
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia
| | - Justine Bradley
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia
| | - Allison S Young
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia
| | - Benjamin Nham
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia
| | - Zeljka Calic
- Department of Neurophysiology, Liverpool Hospital, Sydney, Australia.
| | - Rachael L Taylor
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia.
| | - Jacob M Pogson
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia.
| | - Nicole Reid
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia.
| | - Jonathan H K Kong
- Department of Otolaryngology, Royal Prince Alfred Hospital, Sydney, Australia; Discipline of Surgery, Sydney Medical School, University of Sydney, Sydney, Australia; Department of Otolaryngology, Head and Neck Surgery, Macquarie University Hospital, Sydney, Australia
| | - Sean Flanagan
- Department of Otolaryngology, St Vincent's Hospital, Sydney, Australia
| | - Gabor M Halmagyi
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia.
| | - Sally M Rosengren
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia.
| | - Miriam S Welgampola
- Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Central Clinical School, University of Sydney, Sydney, Australia.
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Kunelskaya NL, Guseva AL, Manaenkova EA, Chugunova MA, Zaoeva ZO. [Vestibular evoked myogenic potentials in patients with recurrent benign paroxysmal positional vertigo]. Vestn Otorinolaringol 2023; 88:4-9. [PMID: 37184547 DOI: 10.17116/otorino2022880214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Registration of ocular and cervical vestibular evoked myogenic potentials (oVEMPs and cVEMPs) reflects the function of otolith receptors: sacculus and utriculus. Benign paroxysmal positional vertigo (BPPV) is a disease of the inner ear as a result of the utriculus disfunction and migration of otoliths into semicircular channels. OBJECTIVE To study the function of otolith receptors (sacculus and utriculus) with using VEMPs registration in patients with first-time and recurrent posterior semicircular canal BPPV before and after repositional maneuvers. MATERIAL AND METHODS Registration and comparison of the results of oVEMPs and cVEMPs were performed in 50 patients with first-time posterior semicircular canal idiopathic BPPV and 26 patients with recurrent posterior semicircular canal BPPV before and after repositional treatment. RESULTS AND DISCUSSION Clinically significant asymmetry of the amplitude of oVEMPs before treatment was recorded in 14 (38%) of patients with first-time BPPV and in 15 (57.7%) of patients with recurrent BPPV; cVEMPs - in 6 (12%) of patients with first-time BPPV and in 6 (23.1%) of patients with recurrent BPPV. Successful repositional treatment did not affect the amplitude of cVEMPs in any of the groups of patients, but led to a significant increase in the amplitude of oVEMPs on the affected side in patients with first-time BPPV. In patients with recurrent BPPV, despite the absence of symptoms of otolithiasis, the asymmetry of the amplitude of oVEMPs persisted during remission (p<0.05), which can be considered as a prognostically unfavorable factor of disease recurrence.
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Affiliation(s)
- N L Kunelskaya
- Sverzhevky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - A L Guseva
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - E A Manaenkova
- Sverzhevky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - M A Chugunova
- Sverzhevky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - Z O Zaoeva
- Sverzhevky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
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Kunelskaya NL, Manaenkova EA, Chugunova MA, Zaoeva ZO. [Method of registration of vestibular myogenic evoked potentials in the diagnosis of diseases of the inner ear]. Vestn Otorinolaringol 2023; 88:44-49. [PMID: 37450390 DOI: 10.17116/otorino20228803144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
The literature review is devoted to the practical application of the method of recording vestibular evoked myogenic potentials (VEMPs) in the diagnosis of the inner ear diseases: superior semicircular canal dehiscence syndrome, Meniere's disease, benign paroxysmal positional vertigo (BPPV), vestibular neuritis. Registration of VMEP is an electrophysiological research method that allows to assess objectively the functional state of the otolith receptors (sacculus and utriculus) and their pathways, which expands the diagnostic capabilities in diagnosis of the inner ear diseases.
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Affiliation(s)
- N L Kunelskaya
- L. I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - E A Manaenkova
- L. I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - M A Chugunova
- L. I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
| | - Z O Zaoeva
- L. I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow, Russia
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Identification of Neural Mechanisms in First Single-Sweep Analysis in oVEMPs and Novel Normative Data. J Clin Med 2022; 11:jcm11237124. [PMID: 36498697 PMCID: PMC9738122 DOI: 10.3390/jcm11237124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Bone-conducted (BC) VEMPs provide important tools for measuring otolith function. However, two major drawbacks of this method are encountered in clinical practice-small n10 amplitude and averaging technique. In this study, we present the results of a new VEMP setup measuring technique combined with a novel single-sweep analysis. METHODS The study included BC oVEMP data from 92 participants for the evaluation of normative data using a novel analysis technique. For evaluating test-retest reliability, the intraclass correlation coefficient (ICC) was used. RESULTS We found significant n10 amplitude differences in single-sweep analyses after the first and second measurements. Thereby, mathematical analyses of the head movement did not show any differences in the first or second measurements. The normative n10 amplitude was 20.66 µV with an asymmetric ratio (AR) of 7%. The new value of late shift difference (LSD) was 0.01 ms. The test retest-reliability showed good to excellent ICC results in 9 out of 10 measurements. CONCLUSIONS Our results support a phenomenon in single-sweep analysis of the first stimuli independent of head movement and signal morphology. Furthermore, the values obtained with the new measurement method appear to be more sensitive and may allow an extended diagnostic range due to the new parameter LSD.
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Effects of Gaze Position on Ocular Vestibular Evoked Myogenic Potential (oVEMP). JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2022. [DOI: 10.30621/jbachs.1108971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Objective: To compare ocular vestibular evoked myogenic potential (oVEMP) responses obtained with superomedial and oblique gaze positions.
Methods: The oVEMP test was applied in 59 healthy subjects at superomedial, right oblique, and left oblique gaze positions. Stimuli were presented at 110 dB nHL with a frequency of 500 Hz. oVEMP responses were recorded via electrodes placed on the lower eyelids.
Results: Higher N1-P1 amplitudes were obtained in oblique gaze positions in the stimulated ear direction compared to the superomedial position (p<0.05). The asymmetry values obtained in the superomedial gaze position were lower than those obtained in oblique gaze positions (p<0.05). Superomedial and oblique gaze positions had no effect on the N1, P1, and N1-P1 latencies of the waves obtained from the right ear, left ear, and both ears (p>0.05).
Conclusion: Superomedial and oblique gaze positions affect oVEMP waves. In patients in whom vestibular hypofunction is suspected, it is recommended to control oVEMP responses in oblique gaze positions as well as in superomedial gaze positions in the evaluation of the residual vestibular functions.
Keywords: oVEMP, gaze, vertigo
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Romero DJ, Jacobson GP, Roberts RA. The effect of EMG magnitude on the masseter vestibular evoked myogenic potential (mVEMP). J Otol 2022; 17:203-210. [PMID: 36249925 PMCID: PMC9547109 DOI: 10.1016/j.joto.2022.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 10/26/2022] Open
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Zhang Y, Chen Z, Zhao H, Shen J, Zhong B, Wu Q, Yang J, Jin Y, Zhang Q, Ren P. B81 Bone Vibrator-Induced Vestibular-Evoked Myogenic Potentials: Normal Values and the Effect of Age. Front Neurol 2022; 13:881682. [PMID: 35645948 PMCID: PMC9131004 DOI: 10.3389/fneur.2022.881682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveTo define the normal values and examine the influence of aging on B81 bone vibrator-induced cervical vestibular-evoked myogenic potentials (B81-cVEMPs) and ocular vestibular-evoked myogenic potentials (B81-oVEMPs).MethodsSeventy healthy subjects, divided into seven groups according to their ages, were enrolled in this study. The 4–9-, 10–19-, 20–29-, 30–39-, 40–49-, 50–59-, and 60–70-year-old participants were divided into groups I–VII, respectively. B81-cVEMP and B81-oVEMP were recorded in each group.ResultsThe B81-cVEMP response rates for groups I–VII were 100, 100, 100, 100, 95, 95, and 75%, respectively, with significant differences only between groups I–VI and group VII (p = 0.047, p < 0.05). The B81-oVEMP response rates for groups I–VII were 100, 100, 100, 100, 70, 65, and 40%, respectively, with significant differences only between groups I–IV and groups V–VII (p = 0.020, p = 0.008, p = 0.000; p < 0.05). The threshold, P13, and N23 latencies of B81-cVEMP positively correlated with age (r = 0.756, p = 0.000; r = 0.357, p = 0.003; r = 0.316, p = 0.009; p < 0.05). The raw amplitudes and corrected amplitudes negatively correlated with age (r = −0.641, p = 0.000; r = −0.609, p = 0.000, p < 0.05). For B81-oVEMP, the corrected amplitudes negatively correlated with age (r = −0.638, p = 0.000, p<0.05), but the threshold and N10 latency positively correlated with age (r = 0.768, p = 0.000; r = 0.334, p = 0.009, p < 0.05). Moreover, the interaural asymmetry ratio did not significantly correlate with age for B81-cVEMP and B81-oVEMP.ConclusionAs age increased, the B81-cVEMP response rate decreased, the thresholds increased, P13 and N23 latencies were prolonged, and the raw amplitude and corrected amplitude decreased. The B81-oVEMP response rate and corrected amplitude decreased, the thresholds increased, and N10 latency was prolonged with age. These changes are probably due to the occurrence of morphological and functional changes in the vestibular system with aging. Therefore, we suggest establishing different reference values according to different age groups when evaluating the VEMP results in patients with vestibular diseases.
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Affiliation(s)
- Yuzhong Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zichen Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Huandi Zhao
- Department of Otorhinolaryngology, Head and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiali Shen
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Institute of Ear Science, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Otolaryngology and Translational Medicine, Shanghai, China
| | - Bo Zhong
- Division of Mechanics and Acoustics, National Institute of Metrology, Beijing, China
| | - Qiong Wu
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Institute of Ear Science, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Otolaryngology and Translational Medicine, Shanghai, China
| | - Jun Yang
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Institute of Ear Science, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Otolaryngology and Translational Medicine, Shanghai, China
| | - Yulian Jin
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Institute of Ear Science, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Otolaryngology and Translational Medicine, Shanghai, China
- Yulian Jin
| | - Qing Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Institute of Ear Science, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Otolaryngology and Translational Medicine, Shanghai, China
- Qing Zhang
| | - Pengyu Ren
- Department of Otorhinolaryngology, Head and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- *Correspondence: Pengyu Ren
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Aydın C, Önay Ö, Tezcan Eİ, Aşkar Z, Özdek A. Comparison of cervical and ocular vestibular-evoked myogenic potential responses between tone burst versus chirp stimulation. Eur Arch Otorhinolaryngol 2022; 279:2339-2343. [PMID: 34129084 DOI: 10.1007/s00405-021-06936-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 06/09/2021] [Indexed: 01/24/2023]
Abstract
PURPOSE To compare the effectiveness of chirp and tone burst stimuli in oVEMP and cVEMP testing for healthy adults METHODS: This study was conducted in 56 healthy volunteers (112 ears). Ocular and cervical VEMP (oVEMP, cVEMP) tests were performed for each participant using tone burst and chirp stimuli. VEMP response rates, latency of each peak (p1-n1, n1-p1), peak to peak amplitude (p1-n1 amplitude and n1-p1 amplitude), and rectified amplitudes were measured and compared between these two different stimuli. RESULTS VEMP response rates with chirp stimuli are higher than the tone burst stimuli for both cVEMP and oVEMP tests (The difference was statistically significant for oVEMP, p = 0.001). Chirp stimuli have higher p1n1 amplitude and rectified amplitude and shorter p1and n1 latency then tone burst stimuli for cVEMP (p = 0.015, p = 0.007, p < 0.001, p < 0.001, respectively). Chirp stimuli also have higher n1p1 amplitude and shorter n1and p1 latency then tone burst stimuli for oVEMP (p = 0.006, p < 0.001, p < 0.001, respectively). CONCLUSION The present findings show that the chirp stimulus triggers earlier VEMP responses with higher amplitudes than the tone burst stimulus during cVEMP and oVEMP testing. VEMP response rate with chirp stimulus is also higher than the tone burst. Therefore chirp stimulus can be used in VEMP testing as effectively as, if not more than, tone burst stimulus in clinical practice.
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Affiliation(s)
- Canset Aydın
- ENT Clinic, Medicana International Hospital, Ankara, Turkey.
| | - Övsen Önay
- Faculty of Medicine, Department of ENT, Atilim University, Ankara, Turkey
| | | | - Zuhal Aşkar
- Ankara Otology and Neurotology Private Clinic, Ankara, Turkey
| | - Ali Özdek
- Ankara Otology and Neurotology Private Clinic, Ankara, Turkey
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Clinard CG, Lawlor KJ, Piker EG. Effects of Stimulus Polarity on Amplitude-Modulated Cervical Vestibular-Evoked Myogenic Potentials. J Am Acad Audiol 2022; 32:588-595. [PMID: 35176802 DOI: 10.1055/s-0041-1733968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Traditional approaches to cervical vestibular-evoked myogenic potentials use a transient stimulus to elicit an onset response. However, alternate approaches with long duration stimuli may allow the development of new methodologies to better understand basic function of the vestibular system, as well as potentially developing new clinical applications. PURPOSE The objective of this study was to examine the effects of stimulus polarity on response properties of amplitude-modulated cervical vestibular-evoked myogenic potentials (AMcVEMPs). RESEARCH DESIGN Prospective, repeated-measures, within-subjects design. STUDY SAMPLE Participants were 16 young, healthy adults (ages 21-38 years). DATA COLLECTION AND ANALYSIS Amplitude-modulated tones, with carrier frequency of 500 Hz and modulation frequency of 37 Hz, were used to elicit AMcVEMPs. Responses were analyzed in three different stimulus polarity conditions: condensation, rarefaction, and alternating. The resulting data were analyzed for differences across polarity conditions. RESULTS AMcVEMP amplitudes, both raw and corrected for tonic muscle activation, were equivalent across the different stimulus phase conditions. In addition, response signal-to-noise ratio and phase coherence were equivalent across the different phases of the stimulus. CONCLUSION Analyses of AMcVEMPs are stable when the carrier frequency starting phase is altered and the phase of the temporal envelope is constant.
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Affiliation(s)
- Christopher G Clinard
- Department of Communication Sciences and Disorders, James Madison University, Harrisonburg, Virginia
| | - Kerri J Lawlor
- Department of Communication Sciences and Disorders, James Madison University, Harrisonburg, Virginia
| | - Erin G Piker
- Department of Communication Sciences and Disorders, James Madison University, Harrisonburg, Virginia
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Chang C, Lo W, Young Y, Liao L, Wu P, Cheng P, Cheng P. Galvanic
vestibular‐evoked
myogenic potentials in evaluating damaged sites of vestibular neuritis. Laryngoscope Investig Otolaryngol 2022; 7:506-514. [PMID: 35434345 PMCID: PMC9008165 DOI: 10.1002/lio2.745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/14/2021] [Accepted: 01/11/2022] [Indexed: 11/28/2022] Open
Abstract
Objectives To test the possibility of pure otolithic organ deficits and validate the histopathological evidence of retrovestibular neural impairment in vestibular neuritis (VN), the authors adopted a topographic survey combining cervical vestibular‐evoked myogenic potential (cVEMP) and ocular vestibular‐evoked myogenic potential (oVEMP) using various stimulation modes and caloric tests. Methods Forty patients with VN were enrolled in this study. All patients underwent pure tone audiometry, acoustic cVEMP, galvanic cVEMP, vibratory oVEMP, galvanic oVEMP, and caloric tests. Different combinations of vestibular tests were further compared and analyzed. Results According to vestibular test results in affected VN ears, the proportion (10%) of pure saccular dysfunction was significantly less than that (52.5%) of saccular nerve deficit. The proportion (2.5%) of pure utricular dysfunction was significantly less than that (37.5%) of utricular nerve deficit. The percentage (82.5%) of VN involving the ampullar vestibulo‐ocular reflex (VOR) pathway was significantly higher than that (40%) involving the utriculo‐ocular reflex (UOR) pathway. The superior, inferior, and total VN percentages were 37.5%, 17.5%, and 45%, respectively. The proportion of inferior VN was significantly less than that of VN involving the superior vestibular nerve. Conclusion There were significantly fewer cases of pure otolithic organ dysfunction than vestibular nerve involvement in VN patients. The damage to the ampullar VOR pathway was more significant than that to the UOR pathway, and both pathways might be independent of each other. In addition, the incidence of isolated inferior VN was significantly less than that of VN involving the superior vestibular nerve. Level of Evidence Level 3.
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Affiliation(s)
- Chih‐Ming Chang
- Department of Biomedical Engineering National Yang Ming Chiao Tung University Taipei Taiwan
- Department of Otolaryngology Far Eastern Memorial Hospital Taipei Taiwan
- Department of Otolaryngology National Taiwan University Hospital Taipei Taiwan
| | - Wu‐Chia Lo
- Department of Otolaryngology Far Eastern Memorial Hospital Taipei Taiwan
- Department of Otolaryngology National Taiwan University Hospital Taipei Taiwan
- Graduate Institute of Medicine Yuan Ze University Taoyuan Taiwan
| | - Yi‐Ho Young
- Department of Otolaryngology National Taiwan University Hospital Taipei Taiwan
| | - Li‐Jen Liao
- Department of Otolaryngology Far Eastern Memorial Hospital Taipei Taiwan
- Department of Otolaryngology National Taiwan University Hospital Taipei Taiwan
- Department of Electrical Engineering Yuan Ze University Taoyuan Taiwan
- Medical Engineering Office Far Eastern Memorial Hospital Taipei Taiwan
| | - Po‐Hsuan Wu
- Department of Otolaryngology Far Eastern Memorial Hospital Taipei Taiwan
- Department of Communication Engineering Asia Eastern University of Science and Technology Taipei Taiwan
| | - Ping‐Chia Cheng
- Department of Otolaryngology Far Eastern Memorial Hospital Taipei Taiwan
| | - Po‐Wen Cheng
- Department of Otolaryngology Far Eastern Memorial Hospital Taipei Taiwan
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Kim Y, Kang BC, Yoo MH, Park HJ. Differential Involvement of Lateral Semicircular Canal and Otolith Organs in Common Vestibular Disorders. Front Neurol 2022; 13:819385. [PMID: 35173674 PMCID: PMC8841591 DOI: 10.3389/fneur.2022.819385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
Semicircular canal and otolith functions came to be evaluated recently, but comprehensive and comparative analysis of canal and otolith dysfunction in common vestibular disorders is lacking. We aimed to analyze the abnormal rates of canal and otolith function in common vestibular disorders. We enrolled 302 patients who were managed for 2 months in a dizziness clinic. Results of caloric, video head impulse test (vHIT), and cervical and ocular vestibular evoked myogenic potential (cVEMP and oVEMP) tests were analyzed and compared among various diagnoses. Vestibular disorders diagnosed included recurrent vestibulopathy (RV, 27%), vestibular migraine (VM, 21%), benign paroxysmal positional vertigo (BPPV, 17%), Meniere's disease (MD, 11%), vestibular neuritis (VN, 10%), orthostatic dizziness (7%), and central lesions (3%). Lateral canal dysfunction was found most in VN (100%) and less commonly in definite MD (75%), RV (46%) and definite VM (29%). Abnormal caloric results were more common than abnormal vHIT in all disorders. Otolith dysfunction was found more frequently than lateral canal dysfunction in most vestibular disorders except VN. An abnormal cVEMP was more frequent in definite MD than the other disorders. Isolated otolith dysfunction without lateral canal dysfunction was the most found in BPPV, followed by definite VM, RV, and definite MD in decreasing order. Various patterns of involvement in canal and otoliths were revealed in vestibular disorders, suggesting different pathogenesis.
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Affiliation(s)
- Yehree Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Byung Chul Kang
- Department of Otorhinolaryngology-Head and Neck Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Hong Ju Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
- *Correspondence: Hong Ju Park
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Sugawara T, Wada Y, Ito T, Sakai H. Bilateral Asymmetry in Ocular Counter-Rolling Reflex Is Associated With Individual Motion Sickness Susceptibility. Front Neurol 2021; 12:759764. [PMID: 34867744 PMCID: PMC8640245 DOI: 10.3389/fneur.2021.759764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/13/2021] [Indexed: 11/30/2022] Open
Abstract
Accumulating evidence suggests that individual variations in vestibular functions are associated with motion sickness (MS) susceptibility. We investigated whether vestibular functions in the reflex and cortical pathways could predict the susceptibility of individuals to MS. MS-susceptible and control adults were recruited according to the Motion Sickness Susceptibility Questionnaire (MSSQ) score. Otolith reflex and cortical functions were assessed using the ocular counter rolling test and the head-tilt subjective visual vertical (HT-SVV) test, respectively. The bilateral asymmetry of each function was compared between the MS-susceptible and the control groups. Although the two tests for otolith functions were conducted using the same stimulation (lateral head tilt), bilateral asymmetry of otolith reflex rather than cortical function was significantly associated with MS susceptibility. Our data suggests that bilateral asymmetry in the otolith reflex pathway is capable of predicting susceptibility to MS to some extent. Our data also suggest that the association between vestibular function and MS susceptibility can vary based on the vehicle types. Future vehicles, such as self-driving cars, will make us aware of other vestibular functions associated with MS susceptibility.
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Affiliation(s)
- Tomoko Sugawara
- Toyota Central Research & Development Laboratories, Inc., Nagakute, Japan
| | - Yoshiro Wada
- Department of Otolaryngology, Head and Neck Surgery, Nara Medical University, Nara, Japan
- Wada ENT Clinic, Osaka, Japan
| | - Taeko Ito
- Department of Otolaryngology, Head and Neck Surgery, Nara Medical University, Nara, Japan
| | - Hiroyuki Sakai
- Toyota Central Research & Development Laboratories, Inc., Nagakute, Japan
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Klunk D, Woost TB, Fricke C, Classen J, Weise D. Differentiating neurodegenerative parkinsonian syndromes using vestibular evoked myogenic potentials and balance assessment. Clin Neurophysiol 2021; 132:2808-2819. [PMID: 34628341 DOI: 10.1016/j.clinph.2021.08.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 07/15/2021] [Accepted: 08/07/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Vestibular evoked myogenic potentials (VEMP) were investigated to differentiate between parkinsonian syndromes. We correlated balance and VEMP parameters to investigate the VEMP brainstem circuits as possible origin for postural instability. METHODS We assessed clinical status, ocular and cervical VEMP (oVEMP, cVEMP) and conducted a balance assessment (posturography, Activities-specific Balance Confidence Scale, Berg Balance Scale, modified Barthel Index) in 76 subjects: 30 with Parkinson's disease (PD), 16 with atypical parkinsonism (AP) and 30 healthy controls. VEMP were elicited by using a mini-shaker on the forehead. RESULTS Patients with PD had a prolonged oVEMP n10 in comparison to controls and prolonged p15 compared to controls and AP. Patients with AP showed reduced oVEMP amplitudes compared to PD and controls. CVEMP did not differ between groups. Postural impairment was higher in AP compared to controls and PD, particularly in the rating scales. No correlations between VEMP and posturography were found. A support vector machine classifier was able to automatically classify controls and patient subgroups with moderate to good accuracy based on oVEMP latencies and balance questionnaires. CONCLUSIONS Both oVEMP and posturography, but not cVEMP, may be differentially affected in PD and AP. We did not find evidence that impairment of the cVEMP or oVEMP pathways is directly related to postural impairment. SIGNIFICANCE OVEMP and balance assessment could be implemented in the differential diagnostic work-up of parkinsonian syndromes.
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Affiliation(s)
- Dietrich Klunk
- Department of Neurology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; Department of Neurology, Altenburger Land Hospital, Am Waldessaum 10, 04600 Altenburg, Germany
| | - Timo B Woost
- Department of Neurology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; Department of Psychiatry and Psychotherapy, Center for Psychosocial Medicine, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246 Hamburg, Germany
| | - Christopher Fricke
- Department of Neurology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany
| | - Joseph Classen
- Department of Neurology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany
| | - David Weise
- Department of Neurology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; Department of Neurology, Asklepios Fachklinikum Stadtroda, Bahnhofstraße 1A, 07646 Stadtroda, Germany.
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Superior semicircular canal dehiscence: a narrative review. The Journal of Laryngology & Otology 2021; 136:284-292. [PMID: 34615564 DOI: 10.1017/s0022215121002826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Chang CM, Lo WC, Young YH, Liao LJ, Wu PH, Cheng PC, Cheng PW. Evaluation of retrootolithic function using galvanic vestibular-evoked myogenic potentials in patients with benign paroxysmal positional vertigo. Eur Arch Otorhinolaryngol 2021; 279:3415-3423. [PMID: 34562111 DOI: 10.1007/s00405-021-07094-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/14/2021] [Indexed: 11/27/2022]
Abstract
PURPOSE The purpose is to investigate possible vestibulopathy in patients with benign paroxysmal positional vertigo (BPPV), inner ear tests, including cervical and ocular vestibular-evoked myogenic potentials (cVEMPs and oVEMPs) via various stimulation modes, were adopted. METHODS Fifty BPPV patients were enrolled in this study. All patients underwent pure tone audiometry, cVEMPs, oVEMPs, and caloric tests. The recurrence status, abnormal rates of inner ear tests, and the characteristic parameters of VEMPs, such as wave latencies and amplitudes, were analyzed. RESULTS In affected ears, the abnormal rates of acoustic cVEMPs, vibratory oVEMPs, galvanic cVEMPs, and galvanic oVEMPs were 62%, 28%, 36%, and 14%, respectively. The abnormalities of acoustic cVEMPs were significantly larger than those of vibratory oVEMPs, and acoustic/vibratory VEMPs had significantly higher abnormal rates than the corresponding galvanic VEMPs. CONCLUSION BPPV patients may have both otolithic and neural dysfunctions. Otolithic organ damage occurs more frequently than retrootolithic neural degeneration, and the saccular macula might have a greater extent of damage than the utricular macula.
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Affiliation(s)
- Chih-Ming Chang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Wu-Chia Lo
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Medicine, Yuan Ze University, Taoyuan, Taiwan
| | - Yi-Ho Young
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Li-Jen Liao
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Electrical Engineering, Yuan Ze University, Taoyuan, Taiwan
- Medical Engineering Office, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - Po-Hsuan Wu
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
- Department of Communication Engineering, Oriental Institute of Technology, Taipei, Taiwan
| | - Ping-Chia Cheng
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - Po-Wen Cheng
- Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan.
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.
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Nakul E, Bartolomei F, Lopez C. Vestibular-Evoked Cerebral Potentials. Front Neurol 2021; 12:674100. [PMID: 34621231 PMCID: PMC8490637 DOI: 10.3389/fneur.2021.674100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 08/20/2021] [Indexed: 11/30/2022] Open
Abstract
The human vestibular cortex has mostly been approached using functional magnetic resonance imaging and positron emission tomography combined with artificial stimulation of the vestibular receptors or nerve. Few studies have used electroencephalography and benefited from its high temporal resolution to describe the spatiotemporal dynamics of vestibular information processing from the first milliseconds following vestibular stimulation. Evoked potentials (EPs) are largely used to describe neural processing of other sensory signals, but they remain poorly developed and standardized in vestibular neuroscience and neuro-otology. Yet, vestibular EPs of brainstem, cerebellar, and cortical origin have been reported as early as the 1960s. This review article summarizes and compares results from studies that have used a large range of vestibular stimulation, including natural vestibular stimulation on rotating chairs and motion platforms, as well as artificial vestibular stimulation (e.g., sounds, impulsive acceleration stimulation, galvanic stimulation). These studies identified vestibular EPs with short latency (<20 ms), middle latency (from 20 to 50 ms), and late latency (>50 ms). Analysis of the generators (source analysis) of these responses offers new insights into the neuroimaging of the vestibular system. Generators were consistently found in the parieto-insular and temporo-parietal junction-the core of the vestibular cortex-as well as in the prefrontal and frontal areas, superior parietal, and temporal areas. We discuss the relevance of vestibular EPs for basic research and clinical neuroscience and highlight their limitations.
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Affiliation(s)
- Estelle Nakul
- Centre National de la Recherche Scientifique (CNRS), Laboratoire de Neurosciences Cognitives (LNC), FR3C, Aix Marseille Univ, Marseille, France
| | - Fabrice Bartolomei
- Institut de Neurosciences des Systèmes, Inserm, Aix Marseille Univ, Marseille, France
- Service de Neurophysiologie Clinique, Hôpital Timone, Aix Marseille Univ, Marseille, France
| | - Christophe Lopez
- Centre National de la Recherche Scientifique (CNRS), Laboratoire de Neurosciences Cognitives (LNC), FR3C, Aix Marseille Univ, Marseille, France
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Chen ZC, Zhang YZ, Zhao HD, Wei X, Murofushi T, Hu J, Cheng Y, Chen FY, Xu XD, Xu M, Zhang Q. Retro-labyrinthine Lesion Site Detected by Galvanic Vestibular Stimulation Elicited Vestibular-evoked Myogenic Potentials in Patients with Auditory Neuropathy. Curr Med Sci 2021; 41:695-704. [PMID: 34403094 DOI: 10.1007/s11596-021-2411-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 07/18/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Auditory neuropathy (AN) is a unique pattern of hearing loss with preservation of hair cell function. The condition is characterized by the presence of otoacoustic emissions (OAE) or cochlear microphonic (CM) responses with severe abnormalities of the auditory brainstem response (ABR). The vestibular branches of the VIII cranial nerve and the structures innervated by it can also be affected. However, the precise lesion sites in the vestibular system are not well characterized in patients with AN. METHODS The air-conducted sound (ACS) vestibular-evoked myogenic potentials (VEMPs) and galvanic vestibular stimuli (GVS)-VEMPs were examined in 14 patients with AN. RESULTS On examination of VEMPs (n=14, 28 ears), the absent rates of ACS-cervical VEMP (cVEMP), ACS-ocular VEMP (oVEMP), GVS-cVEMP, GVS-oVEMP and caloric test were 92.9% (26/28), 85.7% (24/28), 67.9% (19/28), 53.6% (15/28), and 61.5% (8/13), respectively. Impaired functions of the saccule, inferior vestibular nerve, utricle, superior vestibular nerve, and horizontal semicircular canal were found in 25.0% (7/28), 67.9% (19/28), 32.1% (9/28), 53.6% (15/28) and 61.5% (8/13) patients, respectively. On comparing the elicited VEMPs parameters of AN patients with those of normal controls, both ACS-VEMPs and GVS-VEMPs showed abnormal results in AN patients (such as, lower presence rates, elevated thresholds, prolonged latencies, and decreased amplitudes). CONCLUSION The study suggested that patients with AN often have concomitant vestibular disorders. Retro-labyrinthine lesions were more frequently observed in this study. GVS-VEMPs combined with ACS-VEMPs may help identify the lesion sites and facilitate detection of areas of vestibular dysfunction in these patients.
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Affiliation(s)
- Zi-Chen Chen
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China.,Department of Otorhinolaryngology-Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200082, China.,Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, 200082, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, 200082, China
| | - Yu-Zhong Zhang
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China.,Department of Otorhinolaryngology-Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200082, China.,Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, 200082, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, 200082, China
| | - Huan-di Zhao
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China
| | - Xinyu Wei
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China
| | - Toshihisa Murofushi
- Department of Otolaryngology, Teikyo University School of Medicine Mizonokuchi Hospital, Kawasaki, 213-0001, Japan
| | - Juan Hu
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China
| | - Ying Cheng
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China
| | - Fei-Yun Chen
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China
| | - Xin-da Xu
- Department of Otorhinolaryngology, Affiliated Ophthalmology and Otolaryngology Hospital of Fudan University, Shanghai, 200082, China
| | - Min Xu
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China.
| | - Qing Zhang
- Department of Otorhinolaryngology, Head, and Neck Surgery, Second Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, 710000, China. .,Department of Otorhinolaryngology-Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200082, China. .,Shanghai Jiaotong University School of Medicine Ear Institute, Shanghai, 200082, China. .,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, 200082, China.
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Curthoys IS, Grant JW, Pastras CJ, Fröhlich L, Brown DJ. Similarities and Differences Between Vestibular and Cochlear Systems - A Review of Clinical and Physiological Evidence. Front Neurosci 2021; 15:695179. [PMID: 34456671 PMCID: PMC8397526 DOI: 10.3389/fnins.2021.695179] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/12/2021] [Indexed: 12/04/2022] Open
Abstract
The evoked response to repeated brief stimuli, such as clicks or short tone bursts, is used for clinical evaluation of the function of both the auditory and vestibular systems. One auditory response is a neural potential - the Auditory Brainstem Response (ABR) - recorded by surface electrodes on the head. The clinical analogue for testing the otolithic response to abrupt sounds and vibration is the myogenic potential recorded from tensed muscles - the vestibular evoked myogenic potential (VEMP). VEMPs have provided clinicians with a long sought-after tool - a simple, clinically realistic indicator of the function of each of the 4 otolithic sensory regions. We review the basic neural evidence for VEMPs and discuss the similarities and differences between otolithic and cochlear receptors and afferents. VEMPs are probably initiated by sound or vibration selectively activating afferent neurons with irregular resting discharge originating from the unique type I receptors at a specialized region of the otolithic maculae (the striola). We review how changes in VEMP responses indicate the functional state of peripheral vestibular function and the likely transduction mechanisms allowing otolithic receptors and afferents to trigger such very short latency responses. In section "ELECTROPHYSIOLOGY" we show how cochlear and vestibular receptors and afferents have many similar electrophysiological characteristics [e.g., both generate microphonics, summating potentials, and compound action potentials (the vestibular evoked potential, VsEP)]. Recent electrophysiological evidence shows that the hydrodynamic changes in the labyrinth caused by increased fluid volume (endolymphatic hydrops), change the responses of utricular receptors and afferents in a way which mimics the changes in vestibular function attributed to endolymphatic hydrops in human patients. In section "MECHANICS OF OTOLITHS IN VEMPS TESTING" we show how the major VEMP results (latency and frequency response) follow from modeling the physical characteristics of the macula (dimensions, stiffness etc.). In particular, the structure and mechanical operation of the utricular macula explains the very fast response of the type I receptors and irregular afferents which is the very basis of VEMPs and these structural changes of the macula in Menière's Disease (MD) predict the upward shift of VEMP tuning in these patients.
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Affiliation(s)
- Ian S. Curthoys
- Vestibular Research Laboratory, School of Psychology, The University of Sydney, Sydney, NSW, Australia
| | - John Wally Grant
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, United States
| | - Christopher J. Pastras
- The Menière’s Research Laboratory, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Laura Fröhlich
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Daniel J. Brown
- School of Pharmacy and Biomedical Sciences, Curtin University, Bentley, WA, Australia
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Relationship Between Galvanic Vestibular-evoked Myogenic Potentials and the Prognosis of Unilateral Severe to Profound Idiopathic Sudden Sensorineural Hearing Loss With Vertigo. Otol Neurotol 2021; 42:e858-e865. [PMID: 34260506 DOI: 10.1097/mao.0000000000003130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Idiopathic sudden sensorineural hearing loss (ISSNHL) may not only impair cochlear function but also damage vestibular structures, including the saccule, utricle, semicircular canals, and vestibular afferents. Poor recovery often occurs in patient with serious ISSNHL and accompanying vertigo. To define the severity of the disease and to predict prognosis, galvanic vestibular-evoked myogenic potentials (VEMPs) are added to the inner ear test battery. STUDY DESIGN Retrospective case review. SETTING Tertiary referral center. PATIENTS Thirty patients with unilateral severe to profound ISSNHL and accompanying vertigo were enrolled in this retrospective study. INTERVENTION Diagnostic. MAIN OUTCOME MEASURES All subjects underwent pure tone audiometry, cervical and ocular VEMPs, and caloric tests before the initiation of treatment. The treatment outcome, rates of abnormal responses in the tests, and the characteristic parameters of VEMPs such as latencies and amplitudes, were analyzed. RESULTS In affected ears, the rates of abnormal acoustic cVEMPs, vibratory oVEMPs, galvanic cVEMPs, and galvanic oVEMPs were 60, 47, 37, and 20%, respectively. The improvement in the hearing of the affected ear was specified as good recovery or poor recovery. The normal galvanic VEMP group had a significant higher rate of good recovery than abnormal galvanic VEMP group (87% versus 27%; p = 0.003). CONCLUSIONS Patients with unilateral severe to profound ISSNHL and accompanying vertigo who have normal galvanic VEMPs have a higher likelihood of hearing recovery than those who have abnormal galvanic VEMPs.
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Kelly EA, Janky KL, Patterson JN. The Dizzy Child. Otolaryngol Clin North Am 2021; 54:973-987. [PMID: 34304898 DOI: 10.1016/j.otc.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Dizziness occurs in children with an estimated prevalence of 0.45% to 15.0%. Vestibular disorders in the pediatric population can impact gross motor function development, visual acuity, and contribute to psychological distress. Appropriate case history and focused direct examination can be helpful when determining the etiology of dizziness. Vestibular testing can be completed in children and guide management of suspected vestibular dysfunction. Vestibular dysfunction is commonly seen in patients with sensorineural hearing loss. Migraine disorders are the most common cause of dizziness in childhood. Etiologies of dizziness in children differ from those commonly seen in adults.
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Affiliation(s)
- Elizabeth A Kelly
- Department of Otolaryngology, Boys Town National Research Hospital, 555 N 30th St., Omaha, NE 68131, USA.
| | - Kristen L Janky
- Department of Audiology, Boys Town National Research Hospital, 555 N 30th St., Omaha, NE 68131, USA
| | - Jessie N Patterson
- Department of Audiology, Boys Town National Research Hospital, 555 N 30th St., Omaha, NE 68131, USA
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Fröhlich L, Wilke M, Plontke SK, Rahne T. Bone conducted vibration is an effective stimulus for otolith testing in cochlear implant patients. J Vestib Res 2021; 32:355-365. [PMID: 34308918 PMCID: PMC9398058 DOI: 10.3233/ves-210028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Treatment with a cochlear implant (CI) poses the risk of inducing a behaviorally unmeasurable air-bone gap leading to false negative absence of cervical and ocular vestibular evoked myogenic potentials (cVEMPs, oVEMPs) to air conducted sound (ACS). OBJECTIVE To investigate VEMP response rates to ACS and bone conducted vibration (BCV) in CI patients and the applicability of the B81 transducer for BCV stimulation. METHODS Prospective experimental study including unilateral CI patients, measuring cVEMPs and oVEMPs to ACS and to BCV, comparing response rates, signed asymmetry ratios, latencies, and amplitudes. RESULTS Data of 13 CI patients (mean age 44±12 years) were analyzed. For the CI side, oVEMP and cVEMP response rates were significantly higher for BCV (77%cVEMP, 62%oVEMP) compared to ACS (23%cVEMP, 8%oVEMP). For the contralateral side, no difference between response rates to ACS (85%cVEMP, 69%oVEMP) and BCV (85%cVEMP, 77%oVEMP) was observed. Substantially higher asymmetries were observed for ACS (-88±23%for cVEMPs, -96±11%for oVEMPs) compared to BCV (-12±45%for cVEMPs, 4±74%for oVEMPs). CONCLUSIONS BCV is an effective stimulus for VEMP testing in CI patients. The B81 is a feasible stimulator.
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Affiliation(s)
- L Fröhlich
- Department of Otorhinolaryngology, Head & NeckSurgery, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - M Wilke
- Department of Otorhinolaryngology, Head & NeckSurgery, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - S K Plontke
- Department of Otorhinolaryngology, Head & NeckSurgery, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - T Rahne
- Department of Otorhinolaryngology, Head & NeckSurgery, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
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Fröhlich L, Wilke M, Plontke SK, Rahne T. Influence of bone conduction transducer type and placement on ocular and cervical vestibular evoked myogenic potentials. Sci Rep 2021; 11:8500. [PMID: 33875696 PMCID: PMC8055867 DOI: 10.1038/s41598-021-87682-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 03/25/2021] [Indexed: 12/23/2022] Open
Abstract
Evaluating the effectiveness of different bone conduction (BC) transducers with controlled coupling force to elicit cervical and ocular vestibular evoked myogenic potentials (cVEMPs, oVEMPs) in healthy subjects by comparing response rates, amplitudes, latencies, thresholds and asymmetry ratios. Prospective experimental study including healthy participants. VEMPs were measured to different stimulation modes; the BC transducer coupling force was controlled to 5.4 (± 0.5) Newton. cVEMPs: to bone conducted vibration (BCV) with the B81 transducer on the mastoid; oVEMPs: to BCV with the B81 on the mastoid, BCV with the B81 on the forehead, and BCV with the Mini-Shaker 4810 on the forehead. Air conducted sound (ACS) with insert earphones was used as reference. Data of 24 normal subjects (mean age 25.3 (± 3.0) years) were analyzed. ACS and BCV with the B81on the mastoid evoked cVEMPs in 100% of ears. The highest oVEMP response rates were obtained with the B81 on the mastoid (83-92%), the lowest with the B81 on the forehead (17-22%). The Mini-Shaker elicited lower response rates (65%) compared to results from the literature without coupling force control and compared to ACS (78-87%). Amplitudes were higher for BCV than ACS. ACS and BCV on the mastoid caused higher asymmetry compared to BCV forehead stimulation. The B81 was feasible to elicit VEMPs with mastoid placement and can be used as an approved medical device to measure BCV VEMPs in a clinical set-up. Normative asymmetry values have to be established due to higher variability for mastoid stimulation.
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Affiliation(s)
- Laura Fröhlich
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle (Saale), Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany.
| | - Maira Wilke
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle (Saale), Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
| | - Stefan K Plontke
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle (Saale), Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
| | - Torsten Rahne
- Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle (Saale), Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany
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Abstract
OBJECTIVE Vestibular evoked myogenic potentials (VEMPs) are short-latency muscle potentials measured from the neck (cervical VEMP; cVEMP) or under the eyes (ocular VEMP; oVEMP), which provide information regarding function of the saccule and utricle, respectively. VEMPs are reliable when performed in adults; however, reliability of VEMPs in children is unknown. Therefore, the purpose of the study was to determine the test-retest reliability of c- and oVEMP testing in normal control children. STUDY DESIGN Prospective. SETTING Hospital. PATIENTS Ten adults, 14 adolescent children and 13 young children with normal hearing. INTERVENTIONS c- and oVEMP testing were completed across two test sessions in response to air-conduction 500 Hz tone-burst and impulse hammer stimuli. Additionally, oVEMP was completed using eyes-open and eyes-closed conditions. MAIN OUTCOME MEASURES Intraclass correlation coefficients were calculated to determine the reliability of c- and oVEMP outcomes. RESULTS When using air-conduction stimuli, c- and oVEMP amplitudes are reliable across test sessions in normal control children and adults. With impulse hammer stimuli, cVEMP amplitudes showed high reliability; however, oVEMP amplitudes showed low reliability in both eyes-open and eyes-closed conditions. Comparison between eyes-open and eyes-closed oVEMP conditions revealed shorter latencies and higher peak-to-peak amplitudes in the eyes-open condition. CONCLUSIONS In this small cohort of normal control children, cVEMPs are reliable using air-conduction and impulse hammer stimuli and oVEMPs are reliable using air-conduction stimuli in the eyes-open condition. oVEMP in eyes-closed conditions were less reliable compared with eyes-open conditions and resulted in a large number of absent responses.
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Abstract
OBJECTIVES To evaluate the effects of narrow band CE-Chirp (NB CE-Chirp) on the amplitudes and latencies in ocular vestibular evoked myogenic potentials (oVEMPs) at 500 and 1000 Hz in comparison with tone burst (TB). DESIGN Twenty-one healthy volunteers were included in the study and tested in air conduction with a "belly-tendon" montage. Recording conditions were randomized for each participant and each modality was tested twice to check the reproducibility of the procedure. RESULTS NB CE-Chirps at 500 Hz revealed larger n1-p1 amplitudes than 500 Hz TBs (p = .001), which were also larger than NB CE-Chirps and TBs at 1000 Hz (p = .022, p < .001, respectively). Besides, n1 and p1 latencies were shorter in NB CE-Chirp than in TB at 500 Hz (p < .001) and 1000 Hz (p < .001). The older the participants, the lower the amplitudes (p = .021, p = .031) and the longer the n1 (p = .030, p = .025) and p1 latencies (p < .001, p < .001) in 500 Hz NB CE-Chirps and 500 Hz TBs. Interaural asymmetry ratios were slightly higher in 500 Hz NB CE-Chirps as compared to 500 Hz TBs (p = .013). CONCLUSIONS NB CE-Chirps at 500 Hz improved the amplitudes of waveforms in oVEMPs. As for TBs with clicks before, enhancing oVEMPs amplitudes is an essential step to distinguish a healthy person from a patient with either utricular or its related pathways disorder and potentially minimize the risk of cochlear damages. Additional studies including a higher number of healthy participants and patients with vestibular disorders are required to confirm this hypothesis. The large interindividual variability of interaural asymmetry ratios in NB CE-Chirp and in TB at 500 Hz could be explained by the selected montage.
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Vergence increases the amplitude of lateral ocular vestibular evoked myogenic potentials. Exp Brain Res 2021; 239:1337-1344. [PMID: 33655370 DOI: 10.1007/s00221-021-06056-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 02/03/2021] [Indexed: 10/22/2022]
Abstract
The angular and linear vestibulo-ocular reflex responses are greater when viewing near targets to compensate for the relatively larger translation of the eyes with respect to the target. Our aim was to measure vestibular evoked myogenic potentials using a lateral ocular electrode montage (oVEMP) with a laterally applied stimulus using a mini-shaker during both far- and near-viewing (vergence) distances to determine whether vergence affects the oVEMP response as it does the semicircular canal vestibulo-ocular reflex response. Our results show that during vergence, the p1 and n1-p1 amplitude of the lateral oVEMP response increases significantly, whereas the latencies do not change significantly. We suggest that the physiological basis for this vergence-mediated amplitude increase in potentials may be the same as those already documented using transient linear head accelerations. Our data also suggest that irregular vestibular afferents are likely mediating the vergence-mediated gain increase during linear head accelerations because only irregular afferents are stimulated during short, transient 500 Hz stimuli.
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Singh NK, Firdose H. Characterizing the impact of advancing age on 500 Hz tone-burst evoked ocular-vestibular evoked myogenic potentials. Eur Arch Otorhinolaryngol 2021; 278:4259-4268. [PMID: 33454811 DOI: 10.1007/s00405-020-06542-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/01/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Ageing is process that brings about steady decline in most of the systems, and vestibular system is no different. Although the effects of advancing age on the functioning of the semicircular canals and saccule has been well explored, its impact on the utricle remains the least studied component. While some researchers have investigated the effect of advancing age on the utricular functioning by virtue of studying ocular-vestibular evoked myogenic potentials (oVEMP), the use of smaller sample sizes would hamper the generalization of their results. Therefore, the present study aimed at investigating the effect of advancing age on oVEMP using a substantially larger sample size than the predecessors. METHODS A total of 480 individuals in the age range of 10-70 years were used as participants and were divided into six age groups, each one defined as a decade. Contralateral oVEMPs were elicited by 500-Hz tone-bursts and averaged over 200 sweeps to obtain the final waveform. RESULTS There was a significant decline in the response rates, prolongation of latencies and reduction of peak-to-peak amplitude of oVEMP with increasing age after 50 years (p < 0.05). However, there was no significant difference among the age groups until 50 years of age on any of these parameters (p > 0.05). Further, there was no significant change in inter-aural amplitude difference ratio with increasing age (p > 0.05). CONCLUSION The results of the study confirm significant impact of the ageing process on oVEMP after the age of 50 years and, therefore, age appropriate norms should be considered when using oVEMP for investigating utricular functioning in an individual, especially after the age of 50 years.
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Affiliation(s)
- Niraj Kumar Singh
- Department of Audiology, All India Institute of Speech and Hearing, Mansagangothri, Mysore, 570006, India.
| | - Husna Firdose
- Department of Audiology, All India Institute of Speech and Hearing, Mansagangothri, Mysore, 570006, India
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Chen G, Dai X, Ren X, Lin N, Zhang M, Du Z, Zhang E. Ocular vs. Cervical Vestibular Evoked Myogenic Potentials in Benign Paroxysmal Positional Vertigo: A Systematic Review and Meta-Analysis. Front Neurol 2020; 11:596454. [PMID: 33193065 PMCID: PMC7649758 DOI: 10.3389/fneur.2020.596454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/05/2020] [Indexed: 11/13/2022] Open
Abstract
Objective: To compare utricular dysfunction with saccular dysfunction in benign paroxysmal positional vertigo (BPPV), based on ocular vestibular evoked myogenic potentials (oVEMP) and cervical VEMP (cVEMP), respectively. Materials and Methods: We performed a literature search exploring utricular and saccular dysfunction in BPPV patients through June 2020 using oVEMP and cVEMP, respectively. The databases included Pubmed, Embase, CENTRAL, CNKI, Wan Fang Data, and CBM. The literatures were limited to Chinese and English. Inclusion criteria and exclusion criteria were defined. We adopted abnormal rate as the outcome. All statistical processes were conducted through software Review Manager. Considering the air-conducted sound (ACS) and bone conducted vibration (BCV) may have different mechanisms, and three types of diagnostic criteria for abnormal VEMP were available, sub-group analysis was performed simultaneously according to the sound stimuli and the diagnostic criteria of abnormal VEMP. Results: We retrieved 828 potentially relevant literatures, and finally 12 studies were included for meta-analysis of abnormal rate after duplication removal, titles and abstracts screening, and full-text reading. The abnormal rate of oVEMP was not significantly different from cVEMP (OR = 1.59, 95% CI = 0.99–2.57). But the abnormal rate was obviously different between the subgroups adopting ACS oVEMP and BCV oVEMP. In studies adopting ACS oVEMP, the abnormal rate of oVEMP was higher than cVEMP (OR = 1.85, 95% CI = 1.38–2.49). The abnormal rate of oVEMP was also higher than cVEMP when adopting asymmetry ratio (AR) and no response (NR) as diagnostic criteria (OR = 2.16, 95% CI = 1.61–2.89). Conclusion: The meta-analysis reveals that utricular dysfunction may be more predominant in BPPV compared with saccular dysfunction.
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Affiliation(s)
- Gang Chen
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiaoyan Dai
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiuping Ren
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Naifen Lin
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Min Zhang
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhaolin Du
- Department of Otolaryngology Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Endong Zhang
- Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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48
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Luecke VN, Buchwieser L, Zu Eulenburg P, Marquardt T, Drexl M. Ocular and cervical vestibular evoked myogenic potentials elicited by air-conducted, low-frequency sound. J Vestib Res 2020; 30:235-247. [PMID: 32925129 DOI: 10.3233/ves-200712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Sound is not only detected by the cochlea, but also, at high intensities, by the vestibular system. Acoustic activation of the vestibular system can manifest itself in vestibular evoked myogenic potentials (VEMPs). In a clinical setting, VEMPs are usually evoked with rather high-frequency sound (500 Hz and higher), despite the fact that only a fraction of saccular and utricular hair cells in the striolar region is available for high-frequency stimulation. OBJECTIVE As a growing proportion of the population complains about low-frequency environmental noise, including reports on vestibular symptoms, the activation of the vestibular system by low-frequency sound deserves better understanding. METHODS We recorded growth functions of oVEMPs and cVEMPs evoked with air-conducted sound at 120 Hz and below. We estimated VEMP thresholds and tested whether phase changes of the stimulus carrier result in changes of VEMP amplitude and latency. RESULTS The VEMP response of the otholith organs to low-frequency sound is uniform and not tuned when corrected for middle ear attenuation by A-weighting the stimulus level. Different stimulus carrier phases result in phase-correlated changes of cVEMP latencies and amplitudes. CONCLUSIONS VEMPs can be evoked with rather low-frequency sound, but high thresholds suggest that they are unlikely to be triggered by environmental sounds.
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Affiliation(s)
- Vivien Nancy Luecke
- German Center for Vertigo and Balance Disorders - IFB LMU, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Laura Buchwieser
- German Center for Vertigo and Balance Disorders - IFB LMU, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Peter Zu Eulenburg
- German Center for Vertigo and Balance Disorders - IFB LMU, Ludwig-Maximilians-University Munich, Munich, Germany.,Institute for Neuroradiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Torsten Marquardt
- UCL Ear Institute, 332 Gray's Inn Road, London, WC1X 8EE, United Kingdom
| | - Markus Drexl
- German Center for Vertigo and Balance Disorders - IFB LMU, Ludwig-Maximilians-University Munich, Munich, Germany
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49
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Vestibular and cochlear nerve enhancement on MRI and its correlation with vestibulocochlear functional deficits in patients with Ramsay Hunt syndrome. Auris Nasus Larynx 2020; 48:347-352. [PMID: 32928603 DOI: 10.1016/j.anl.2020.08.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 07/18/2020] [Accepted: 08/27/2020] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The correlation between enhancement of the vestibulocochlear nerves on gadolinium-enhanced magnetic resonance imaging (MRI) and vestibulocochlear functional deficits was examined in patients with Ramsay Hunt syndrome (RHS). METHODS Nineteen patients with RHS who showed herpes zoster oticus, peripheral facial palsy, and vertigo were enrolled. Canal paresis (CP) in the caloric test, abnormal response to ocular and cervical vestibular myogenic potentials (oVEMP and cVEMP), and refractory sensorineural hearing loss were evaluated. MRI images perpendicular to the internal auditory canal were reconstructed to identify the superior (SVN) and inferior vestibular nerves (IVN) and the cochlear nerve (CV). The signal intensity increase (SIinc) of the four-nerve enhancement was calculated as an index. RESULTS Among RHS patients, 79%, 53%, 17% and 26% showed CP in the caloric test, abnormal responses to oVEMP and cVEMP, and refractory sensorineural hearing loss, respectively. SIinc rates of the SVN were significantly increased in RHS patients with CP in the caloric test, and with abnormal responses to oVEMP and cVEMP. SIinc rates of the SVN tended to increase in RHS patients with refractory sensorineural hearing loss (p = 0.052). SIinc rates of the IVN were significantly increased in RHS patients with abnormal responses to oVEMP and cVEMP, and refractory sensorineural hearing loss, but not in those with CP in the caloric test. SIinc rates of the CN were significantly increased in RHS patients with CP in the caloric test, abnormal response to oVEMP and refractory sensorineural hearing loss, but not in those with abnormal response to cVEMP. CONCLUSION In patients with RHS, the origin of vertigo may be superior vestibular neuritis, which is affected by reactive varicella-zoster virus from the geniculate ganglion of the facial nerve through the faciovestibular anastomosis. The results also suggested that in some RHS patients, inferior vestibular neuritis contributes to the development of vertigo and that the origin of refractory sensorineural hearing loss is cochlear neuritis.
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50
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Hegemann SCA, Weisstanner C, Ernst A, Basta D, Bockisch CJ. Constant severe imbalance following traumatic otoconial loss: a new explanation of residual dizziness. Eur Arch Otorhinolaryngol 2020; 277:2427-2435. [PMID: 32314051 DOI: 10.1007/s00405-020-05926-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 03/16/2020] [Indexed: 11/27/2022]
Abstract
Benign paroxysmal positional vertigo (BPPV) is the most common type of vertigo, caused by otoconia falling from the utricle into a semicircular canal (SCC). After successful repositioning maneuvers residual dizziness (RD) has been described and several reasons are used to explain RD. It can last for only a few days or weeks, but also much longer. We present a patient with a severe traumatic loss of otoconia from both maculae utriculi and a persistent imbalance more than 9 years. We think that the loss of otoconia from the utricular and probably also saccular macula induced a sudden reduction of her ability to sense gravity thus logically explaining her symptoms. We show the vestibular test results also supporting our hypothesis and we extrapolate this support to other forms of so far unexplained dizziness especially increasing imbalance with aging. We also discuss the normal c- and oVEMP indicating intact haircell function and supporting our hypothesis of isolated otoconial loss as the major cause for imbalance.
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Affiliation(s)
- Stefan C A Hegemann
- Balance-clinic Zurich, Nüschelerstrasse 49, 8001, Zurich, Switzerland. .,Faculty of Medicine, Universität Zürich, Rämistrasse 71, 8006, Zurich, Switzerland.
| | - Christian Weisstanner
- Medizinisches Radiologisches Institut Zurich (MRI-Zurich), Toblerstrasse 51, 8044, Zurich, Switzerland
| | - Arneborg Ernst
- Unfallkrankenhaus Berlin, Warener Str. 7, 12683, Berlin, Germany
| | - Dietmar Basta
- Unfallkrankenhaus Berlin, Warener Str. 7, 12683, Berlin, Germany
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