scholarly journals Tone Burst Masseter Vestibular Evoked Myogenic Potentials: Normative Values and Test–Retest Reliability

2021 ◽  
Author(s):  
Sangu Srinivasan Vignesh ◽  
Niraj Kumar Singh ◽  
Krishna Rajalakshmi
Keyword(s):  
Research Design ◽  
Intraclass Correlation ◽  
Tone Burst ◽  
Peak Amplitude ◽  
Vestibular Evoked Myogenic Potentials ◽  
Normative Values ◽  
Asymmetry Ratio ◽  
Vestibular Evoked Myogenic Potential ◽  
Retest Reliability ◽  
Test Retest Reliability

Abstract Background Masseter vestibular evoked myogenic potential (mVEMP) is a recent tool for the assessment of vestibular and trigeminal pathways. Though a few studies have recorded mVEMP using click stimuli, there are no reports of these potentials using the more conventional VEMP eliciting stimuli, the tone bursts. Purpose The aim of the study is to establish normative values and determine the test–retest reliability of tone burst evoked mVEMP. Research Design The research design type is normative study design. Study Sample Forty-four healthy participants without hearing and vestibular deficits in the age range of 18 to 50 years participated in the study. Data Collection and Analysis All participants underwent mVEMP testing using 500 Hz tone-burst stimuli at 125 dB peSPL. Ten participants underwent second mVEMP testing within 1 month of the initial testing to estimate the test–retest reliability. Results Tone burst mVEMP showed robust responses in all participants. There were no significant ear and sex differences on any mVEMP parameter (p > 0.05); however, males had significantly higher EMG normalized peak-to-peak amplitude than females. Intraclass correlation coefficient (ICC) values of tone burst mVEMP showed excellent test–retest reliability (ICC >0.75) for ipsilateral and contralateral p11 latency, ipsilateral EMG normalized p11-n21 peak to peak amplitude, and amplitude asymmetry ratio. Fair and good test–retest reliability (0.4 < ICC > 0.75) was observed for ipsilateral and contralateral n21 latency, contralateral EMG normalized peak-to-peak amplitude, and amplitude asymmetry ratio. Conclusion Tone burst mVEMP is a robust and reliable test for evaluating the functional integrity of the vestibulomasseteric reflex pathway.

Normal Characteristics of the Ocular Vestibular Evoked Myogenic Potential

2011 ◽  
Vol 22 (04) ◽  
pp. 222-230 ◽  
Author(s):  
Erin G. Piker ◽  
Gary P. Jacobson ◽  
Devin L. McCaslin ◽  
Linda J. Hood
Keyword(s):  
Intraclass Correlation ◽  
Reference Electrode ◽  
Extraocular Muscles ◽  
Vestibular Evoked Myogenic Potentials ◽  
Oblique Muscle ◽  
Vestibular Evoked Myogenic Potential ◽  
Retest Reliability ◽  
Myogenic Potential ◽  
The Mean ◽  
Test Retest Reliability

Background: Stimulus-evoked electromyographic changes can be recorded from the extraocular muscles. These short-latency negative-polarity evoked myogenic potentials are called ocular vestibular evoked myogenic potentials (oVEMPs). To date there has not yet been a large-scale study examining the effects of age on the amplitude, latency, threshold, and interaural differences of the oVEMP to air-conducted stimuli. Further, before the oVEMP can become a useful clinical tool, the test–retest reliability of the response must be established. The oVEMP response, once more completely understood, may provide diagnostic information that is complementary to the cervical vestibular evoked myogenic potential (cVEMP; i.e., sternocleidomastoid muscle). Purpose: To describe the normal characteristics of oVEMP in a cohort of age-stratified subjects, to assess the test–retest reliability of the oVEMP, and to determine if reference contamination occurs using a common recommended infraorbital reference electrode derivation. Research Design: A prospective, descriptive study design was used for an investigation with a threefold purpose in which oVEMP recordings were made from the extraocular muscles (e.g., inferior oblique muscle). Study Sample: Fifty otologically and neurologically normal adults and children served as subjects. Subjects ranged in age from 8 to 88 yr. Data Collection and Analysis: In Investigation 1, oVEMPs were recorded from the ipsilateral and contralateral inferior oblique muscles for all subjects. The stimulus was a 95 dB nHL 500 Hz tone burst. Next, oVEMP thresholds were obtained. Amplitude, latency, and thresholds were tabulated, and descriptive statistics were used to calculate normative values. Age-related differences in oVEMP component latencies, amplitudes, interaural amplitude asymmetries (IAAs), and thresholds were determined using an analysis of variance. In Investigation 2, oVEMPs were recorded twice in 10 subjects, once (test) and once approximately 10 weeks later (retest). Test–retest reliability for the oVEMP peak-to-peak amplitude, n1 latency, p1 latency, n1 threshold, and IAA were assessed with intraclass correlation coefficients (ICCs) calculated using a two-way random-effects, absolute-agreement model. In Investigation 3, a four-channel oVEMP recording was conducted in 10 subjects. Both observational methods and paired-sample t-tests were used to evaluate the effect that reference electrode location had on the oVEMP. Results: oVEMP responses were present bilaterally in 90% of our subjects. The upper limit of oVEMP amplitude asymmetry, defined as the mean plus two standard deviations, was 34% (mean = 14%, SD 10), and the mean n1 latency was 12.5 (SD 1.0) msec. The amplitude of the response significantly decreased and the threshold significantly increased with increasing age, with the greatest age effects occurring in subjects 50 yr and older. Test–retest reliability was acceptable (ICCs for the measurement variables ranged from .53 to .87). Using conventional recommended recording techniques, evidence of reference contamination occurred for all subjects, resulting in a mean amplitude reduction of 30% (range = 18%–43%). Conclusions: Age results in systematic changes in oVEMP measurement parameters. The test–retest reliability is acceptable, and reference contamination averaging 30% is guaranteed using a second infraorbital electrode as the inverting input (i.e., reference electrode) for bipolar recordings. The oVEMP can be used as a complementary diagnostic tool to the cVEMP in evaluating subjects with suspected peripheral vestibular disorders.

scholarly journals State-of-the-art assessment allows for improved vestibular evoked myogenic potential test-retest reliability

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Lydia Behtani ◽  
Maxime Maheu ◽  
Audrey Delcenserie ◽  
Mujda Nooristani ◽  
François Champoux
Keyword(s):  
State Of The Art ◽  
Vestibular Evoked Myogenic Potentials ◽  
Vestibular Evoked Myogenic Potential ◽  
Retest Reliability ◽  
Vestibular Assessment ◽  
Myogenic Responses ◽  
Neurologically Normal ◽  
Test Retest Reliability ◽  
The Impact ◽  
Potential Test

The goal of the present study was to evaluate the test-retest reliability values of myogenic responses using the latest guidelines for vestibular assessment. Twenty-two otologically and neurologically normal adults were assessed twice, on two different days. The analyses were carried out using interclass correlations. The results showed that the latest recommendations for vestibular assessment lead to test-retest reliability values that are as high, or greater, than those reported in previous studies. The results suggest that state-of-the-art testing, using the latest recommendations as well as electromyography control, improves reliability values of myogenic responses, more specifically for the cervical vestibular evoked myogenic potentials. The impact of small differences in experimental procedures on the reliability values of myogenic responses is also addressed.

Test–Retest Reliability of Cervical and Ocular Vestibular Evoked Myogenic Potential With Simultaneous and Sequential Recording

2019 ◽  
Vol 28 (2S) ◽  
pp. 414-421 ◽  
Author(s):  
Anupriya E. ◽  
Kaushlendra Kumar
Keyword(s):  
Simultaneous Recording ◽  
Vestibular Evoked Myogenic Potentials ◽  
Testing Time ◽  
Simultaneous Methods ◽  
Vestibular Evoked Myogenic Potential ◽  
Good Test ◽  
Retest Reliability ◽  
Myogenic Potential ◽  
Recording Session ◽  
Test Retest Reliability

Purpose Simultaneous recording of cervical (cVEMP) and ocular (oVEMP) vestibular evoked myogenic potentials aids in reducing the testing time when compared to conventional sequential recordings. The purpose of this study was to examine the test–retest reliability of sequential and simultaneous acquisitions of cVEMP and oVEMP. Method cVEMP and oVEMP were recorded in 35 normal-hearing individuals. The cVEMP and oVEMP were obtained using sequential and simultaneous methods. The VEMP recordings were performed across 3 sessions. The 1st 2 recording sessions were consecutive with a gap of 5 min between sessions. The 3rd recording session was after a gap of 3–5 days. Results Both simultaneous and sequential recordings showed fair-to-good test–retest reliability for latencies and amplitude of cVEMP and oVEMP. Conclusion Simultaneous cVEMP and oVEMP recordings can be used to obtain fast VEMP recording with test–retest reliability comparable with that of sequential recording.

scholarly journals Cervical Vestibular-Evoked Myogenic Potentials: Norms and Protocols

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Suwicha Isaradisaikul ◽  
Niramon Navacharoen ◽  
Charuk Hanprasertpong ◽  
Jaran Kangsanarak
Keyword(s):  
Vestibular Function ◽  
Tone Burst ◽  
Contralateral Side ◽  
Vestibular Evoked Myogenic Potentials ◽  
Normative Values ◽  
Vestibular Evoked Myogenic Potential ◽  
Reference Guide ◽  
Inferior Vestibular Nerve ◽  
Set Up ◽  
Vestibular Function Test

Vestibular-evoked myogenic potential (VEMP) testing is a vestibular function test used for evaluating saccular and inferior vestibular nerve function. Parameters of VEMP testing include VEMP threshold, latencies of p1 and n1, and p1-n1 interamplitude. Less commonly used parameters were p1-n1 interlatency, interaural difference of p1 and n1 latency, and interaural amplitude difference (IAD) ratio. This paper recommends using air-conducted 500 Hz tone burst auditory stimulation presented monoaurally via an inserted ear phone while the subject is turning his head to the contralateral side in the sitting position and recording the responses from the ipsilateral sternocleidomastoid muscle. Normative values of VEMP responses in 50 normal audiovestibular volunteers were presented. VEMP testing protocols and normative values in other literature were reviewed and compared. The study is beneficial to clinicians as a reference guide to set up VEMP testing and interpretation of the VEMP responses.

scholarly journals The Effects of Different Types of Stimulus and its Test-Retest Reliability on Cervical Evoked Myogenic Potential (Cvemp) Results

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Mohamad Amir Faisal Mohd Saufi ◽  
Nur Hafizah Sulaiman ◽  
Sarah Rahmat
Keyword(s):  
Tone Burst ◽  
Vestibular Evoked Myogenic Potential ◽  
Suprasternal Notch ◽  
Active Electrode ◽  
Good Test ◽  
Retest Reliability ◽  
Factors Affecting ◽  
Myogenic Potential ◽  
Significant Difference ◽  
Test Retest Reliability

Introduction: The Cervical Vestibular Evoked Myogenic Potential (cVEMP) is used to evaluate the integrity of saccule and inferior vestibular nerve. There are a lot of factors affecting cVEMP results including stimulus types. This study was carried out to determine the effects of different stimuli on cVEMP results and its test-retest reliability. Materials and method: 25 normal hearing subjects were recruited. The cVEMP testing were performed in 2 sessions with 1 week gap between each sessions. The cVEMP waveforms were recorded in sitting upright position with electrodes placed at; i) upper one-third of sternocleidomastoid muscle for active electrode, ii) suprasternal notch for inactive electrode and, iii) middle of forehead for the ground electrode. The stimuli (500Hz tone burst, click, narrowband chirp and broadband chirp) were presented via insert phone at 95dBnHL. The cVEMP results (P13-N23 peak-to-peak amplitude, P13 latency and N23 latency) were recorded. Results: Result showed; i) 500Hz tone burst produced significantly largest amplitude; ii) narrowband chirp produced significantly shortest P13 latency; iii) broadband chirp produced significantly shortest N23 latency; iv) no significant difference of P13 and N23 latency were observed between two sessions; and v) significant difference of P13-N23 amplitude were observed between two sessions for all stimuli except for narrowband chirp. Conclusion: The 500Hz tone burst was observed to be the most ideal stimulus (produce highest amplitude). All stimuli produced good test-retest reliability in terms of latency. However, most of the stimuli produced poor test-retest reliability in terms of amplitude except for narrowband chirps.

Test-Retest-Reliability of Computer-Based Metamorphopsia Measurement in Macular Diseases

2020 ◽  
Author(s):  
Daniela Claessens ◽  
Alexander K. Schuster ◽  
Ronald V. Krüger ◽  
Marian Liegl ◽  
Laila Singh ◽  
...  
Keyword(s):  
Macular Edema ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Intraclass Correlation ◽  
Measuring Method ◽  
Repeated Measurements ◽  
Retest Reliability ◽  
Macular Diseases ◽  
Computer Based ◽  
Test Retest Reliability

AbstractIn this study, the test-retest-reliability as one aspect of reliability of metamorphopsia measurements using a computer-based measuring method was determined in patients with macular diseases. Metamorphopsia amplitude, position, and area were quantified using AMD – A Metamorphopsia Detector software (app4eyes GmbH & Co. KG, Germany) in patients with diabetic, myopic, or uveitic macular edema, intermediate or neovascular age-associated macular degeneration, epiretinal membrane, vitelliform maculopathy, Irvine-Gass syndrome, or macular edema due to venous retinal occlusion. The intraclass correlation coefficient (ICC) was calculated in order to determine the repeatability of two repeated measurements and was used as an indicator of the reliability of the measurements. In this study, metamorphopsia measurements were conducted on 36 eyes with macular diseases. Metamorphopsia measurements made using AMD – A Metamorphopsia Detector software were highly reliable and repeatable in patients with maculopathies. The intraclass correlation coefficient of all indices was excellent (0.95 – 0.97). For diseases of the vitreoretinal interface or macular diseases with intra- or subretinal edema, this metamorphopsia measurement represents a supplement for visual function testing in the clinic, as well as in clinical studies.

scholarly journals Validation of a menstrual pictogram and a daily bleeding diary for assessment of uterine fibroid treatment efficacy in clinical studies

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Claudia Haberland ◽  
Anna Filonenko ◽  
Christian Seitz ◽  
Matthias Börner ◽  
Christoph Gerlinger ◽  
...  
Keyword(s):  
Uterine Fibroid ◽  
Full Range ◽  
Intraclass Correlation ◽  
Phase Iii ◽  
Measurement Properties ◽  
Retest Reliability ◽  
Response Options ◽  
Patient Global Impression ◽  
Patient Reported ◽  
Test Retest Reliability

Abstract Background To evaluate the psychometric and measurement properties of two patient-reported outcome instruments, the menstrual pictogram superabsorbent polymer-containing version 3 (MP SAP-c v3) and Uterine Fibroid Daily Bleeding Diary (UF-DBD). Test-retest reliability, criterion, construct validity, responsiveness, missingness and comparability of the MP SAP-c v3 and UF-DBD versus the alkaline hematin (AH) method and a patient global impression of severity (PGI-S) were analyzed in post hoc trial analyses. Results Analyses were based on data from up to 756 patients. The full range of MP SAP-c v3 and UF-DBD response options were used, with score distributions reflecting the cyclic character of the disease. Test-retest reliability of MP SAP-c v3 and UF-DBD scores was supported by acceptable intraclass correlation coefficients when stability was defined by the AH method and Patient Global Impression of Severity (PGI-S) scores (0.80–0.96 and 0.42–0.94, respectively). MP SAP-c v3 and UF-DBD scores demonstrated strong and moderate-to-strong correlations with menstrual blood loss assessed by the AH method. Scores increased in monotonic fashion, with greater disease severities, defined by the AH method and PGI-S scores; differences between groups were mostly statistically significant (P < 0.05). MP SAP-c v3 and UF-DBD were sensitive to changes in disease severity, defined by the AH method and PGI-S. MP SAP-c v3 and UF-DBD showed a lower frequency of missing patient data versus the AH method, and good agreement with the AH method. Conclusions This evidence supports the use of the MP SAP-c v3 and UF-DBD to assess clinical efficacy endpoints in UF phase III studies replacing the AH method.

scholarly journals Cross-cultural translation and validation of the Spanish version of the patellofemoral pain and osteoarthritis subscale of the KOOS (KOOS-PF)

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Juan Pablo Martinez-Cano ◽  
Daniel Vernaza-Obando ◽  
Julián Chica ◽  
Andrés Mauricio Castro
Keyword(s):  
Intraclass Correlation ◽  
Patellofemoral Pain ◽  
Spanish Version ◽  
Minimal Detectable Change ◽  
Global Rating ◽  
Minimal Important Change ◽  
Specific Patient ◽  
Retest Reliability ◽  
Patient Reported ◽  
Test Retest Reliability

Abstract Objective The aim of this study was to translate to Spanish the patellofemoral pain and osteoarthritis subscale of the knee injury and osteoarthritis outcome score (KOOS-PF) and validate this Spanish version of a disease-specific patient-reported outcome measure (PROM) for patellofemoral pain. Results The KOOS-PF was translated to Spanish and sixty patients with patellofemoral pain and/or osteoarthritis accepted to complete the questionnaire. 1-week later 58 patients answered the questions again for the test–retest reliability validation and finally 55 patients completed 1-month later for the responsiveness assessment. The Spanish version showed very good internal consistency (Cronbach’s alpha: 0.93) and test–retest reliability (intraclass correlation coefficient: 0.82). Responsiveness was confirmed, showing a strong correlation with the global rating of change (GROC) score (r 0.64). The minimal detectable change was 11.1 points, the minimal important change was 17.2 points, and there were no floor or ceiling effects for the score.

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