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An evaluation of vestibular functions in substance misuse
(Cambridge Univ Press, 2025) Colak, Sanem Can; Cengiz, Deniz Ugur; Bayindir, Tuba; Cumurcu, Birguel
Objective The aim of this study was to evaluate the vestibular system in substance addicts. Methods A total of 34 substance addicts were included in the study. A demographic data form, the Dizziness Handicap Inventory, the Addiction Profile Index Screening - Short Form, the Video Head Impulse Test, videonystagmography, and cervical and ocular vestibular evoked myogenic potentials tests were administered in all participants. Results A statistically significant difference was found between the study group and the control group (p < 0.05) in terms of gaze, saccade, pursuit and optokinetic results in the videonystagmography test; lateral, anterior and posterior semicircular canal gain values in the Video Head Impulse Test; P1 latency, P1-N1 interlatency, P1-N1 amplitude and asymmetry values in the cervical vestibular evoked myogenic potentials test; and N1-P1 interlatency, N1-P1 amplitude and asymmetry values in the ocular vestibular evoked myogenic potentials test (p < 0.05). Conclusion As a result of our study, it was observed that the vestibular system was affected in substance addicts.
An investigation of the effects of various proprioceptive inputs on vestibuloocular reflex and otolith organs
(Taylor & Francis Ltd, 2025) Cengiz, Deniz Ugur; Karababa, Ercan; Sarioglu, Sanem Can; Mazooglu, Busra; Demirel Birisik, Sumeyye; Avsar, Almila; Bozkurt, Hatice Kubra
Background The vestibular system is crucial for balance and gaze stability. Proprioceptive inputs from the musculoskeletal system significantly contribute to vestibular processing, especially under postural challenge. Objectives To examine how proprioceptive inputs in various body positions affect the vestibulo-ocular reflex (VOR) and otolith organ function. Materials and methods Thirty healthy adults (18-40 years, no vertiginous symptoms) underwent cervical and ocular vestibular evoked myogenic potentials (c-VEMP, o-VEMP) and video head impulse testing (v-HIT) in four positions: sitting, standing, one-leg standing, and on a balance disk. Primary outcomes included latency, amplitude, and asymmetry for VEMPs; gain and asymmetry for semicircular canals (SCCs) via v-HIT. Results c-VEMP latencies and amplitudes did not differ significantly across positions; however, amplitude asymmetry was significantly different between sitting and other conditions (p = .041). o-VEMP results remained consistent (p > .05). v-HIT revealed progressively reduced SCC gain from sitting to disk stance, with significant decreases in lateral SCCs (p < .05) and vertical SCCs (p < .001); asymmetry remained stable. Conclusions and significance Increased proprioceptive demand reduced VOR gain and modified c-VEMP asymmetry, reflecting enhanced vestibulospinal engagement. These outcomes likely arise from multisensory interactions rather than proprioceptive input alone, underscoring integrated sensory contributions to postural control.
Cervical and ocular vestibular-evoked myogenic potentials induced by bone conduction in the pediatric group: Test-Retest reliability and validity
(Elsevier Ireland Ltd, 2026) Cengiz, Deniz Ugur; Sarioglu, Sanem Can; Mazooglu, Busra; Demir, Almila Avsar; Aslan, Mehmet
Background: It is better to perform the VEMP test with bone conduction stimulus in the pediatric group, where conduction-type pathologies can be frequently observed. Aim: This study aimed to establish normative values of the Vestibular-Evoked Myogenic Potential (VEMP) test in pediatric individuals using bone-conduction stimuli at different frequencies (250 Hz, 500 Hz, 750 Hz) and to evaluate its test-retest reliability. Materials and methods: This study employed a descriptive design and included 37 healthy individuals aged 8-18 years. Cervical VEMP and ocular VEMP tests were conducted using a B-71 bone vibrator that delivered tone-burst stimuli at frequencies of 250, 500, and 750 Hz at 60 dB nHL. The first test was administered by one clinician, and the second test was conducted by another clinician one week later. Test-retest analysis evaluated wave latencies, interlatencies, amplitudes, and amplitude asymmetry values. Since the data showed normal distribution, parametric tests were used; within-group comparisons were analyzed with paired t-tests, between-group comparisons with independent t-tests, and ICC values were calculated to assess reliability. Results: In cervical VEMP using bone-conduction stimuli, the intraclass correlation coefficient (ICC) values for the assessment parameters ranged from 0.60 to 0.87 at 250 Hz, from 0.54 to 0.74 at 500 Hz, and from 0.50 to 0.78 at 750 Hz. In ocular VEMP using bone-conduction stimuli, the ICC values ranged from 0.60 to 0.84 at 250 Hz, from 0.68 to 0.84 at 500 Hz, and from 0.65 to 0.79 at 750 Hz. Conclusion: Cervical and ocular VEMP tests using bone-conduction stimuli are reliable methods for evaluating the functional integrity of the vestibular system in pediatric populations.
A comparison of functional vestibulo-ocular reflex and proprioception in athletes of combat sports and ball sports
(Cell Press, 2023) Kızılay, Fatma; Cengiz, Deniz Ugur
Background: The contribution and role of sensory systems in providing postural control may vary depending on the condition or activity. Vestibulo-ocular reflex (VOR) and proprioception might be affected by the type of sport.Objective: This study aimed to compare athletes engaged in combat sports and ball sports in terms of functional VOR and proprioception.Design: This study is a cross-sectional, comperative research.Method: Twenty-four athletes engaged in combat sports and 20 in ball sports were included in the study. Functional examination of VOR in athletes was performed with a novel Functional Head Impulse Test (fHIT). Proprioception analysis was evaluated using Laser Pointer Assisted Angle Reproduction Test (LPA-ART) in 90 degrees shoulder flexion and abduction.Results: fHIT lateral and posterior % Correct Answer (CA) values and anterior SCC 6000 degrees /s2 values of athletes engaged in ball sports were found to be statistically significantly higher than athletes in combat sports (p < 0.05). Except for anterior SCC 4000/s2 value, scores of the ball players in all accelerations and directions were higher than combat sports athletes, although it was not statistically significant. The 90 degrees shoulder flexion and abduction angle deviation values obtained from the LI-ATT were statistically lower in those who played ball sports (p < 0.05).Conclusions: Participation in sports branches played with the ball is expected to provide gains for athletes who want to reach high-level performance in proprioceptive and vestibular functioning and those with vestibular/proprioceptive pathology. Maintaining clear vision in dynamic sports branches can be improved by training VOR function.
Comparison of Functional Vestibulo-Ocular Reflex in Follicular and Luteal Phase in Young Girls
(Aves, 2023) Cengiz, Deniz Ugur; Colak, Sanem Can; Koca, Hacer Unver
BACKGROUND: The aim of this study is to compare the possible functional involvement of the vestibulo-ocular reflex in the follicular and luteal phases. METHODS: The research was carried out at a university located in eastern Turkey. The study included 37 healthy female volunteering students aged 18-25 years. The functional head impulse test was applied twice in the follicular phase and in the luteal phase, and the results in both phases were compared. RESULTS: In the functional head impulse test, statistically significant differences were obtained between the follicular phase and the luteal phase at the stimulus to the lateral semicircular canal direction total and 6000 degrees/s2 acceleration percentage of correct answers values, the posterior semicircular canal direction stimulations at 3000 degrees/s2 and 5000 degrees/s2 acceleration percentage of correct answers values, and the anterior semicircular canal direction stimulations at 5000 degrees/s2 acceleration percentage of correct answers values. CONCLUSION: In the luteal phase, which corresponds to the period before menstruation, the vestibulo-ocular reflex is functionally negatively affected.
Determination of the normative values of the subjective visual vertical and horizontal test in the pediatric population
(Elsevier Ireland Ltd, 2026) Sarioglu, Sanem Can; Cengiz, Deniz Ugur; Bugra, Esra; Mazooglu, Busra; Avsar, Almila
Background: Subjective Visual Vertical (SVV) and Subjective Visual Horizontal (SVH) tests are useful tests to identify central vestibular tone imbalances. Aim: To determine the normal values of the Subjective Visual Vertical/Subjective Visual Horizontal (SVV/SVH) test in the pediatric group. The normative data were intended to be used as reference values in the vestibular evaluation of patients presenting with balance disorders and complaints of dizziness. Materials and methods: The study included 60 individuals between the ages of 8 and 18. All participants underwent static and dynamic SVV and SVH testing using the Virtualis Virtual Reality device, based on a test-retest protocol with six different initial tilt angles (10 degrees,-10 degrees, 20 degrees,-20 degrees, 30 degrees,-30 degrees). Deviation angles were analyzed. Results: Across all tilt angles, the mean deviation angle ranged from 1.93 degrees to 2.44 degrees for the static SVV test and from 1.73 degrees to 2.31 degrees for the static SVH test. For the dynamic SVV test, the mean deviation angle ranged from 10.47 degrees to 11.42 degrees, while in the dynamic SVH test, it ranged from 7.3 degrees to 8.85 degrees across all tilt angles. Conclusion: As a result of this study, normative values for static and dynamic SVV and SVH tests using the Virtualis Virtual Reality Device were established for use in vestibular assessment in the pediatric population. The study contributes to the current literature by providing updated data, addressing the limited number of studies on static and dynamic SVV and SVH tests in pediatric populations.
Does Inferior Oblique Muscle Overaction Affect Ocular Vestibular Evoked Myogenic Potentials?
(Pera Yayincilik Hizmetleri, 2023) Demir, Ismail; Yalcin, Muhammed Zeki; Cengiz, Deniz Ugur; Aydin, Sukru; Cankaya, Cem; Tekin, Ahmet Mahmut
Objectives: Inferior oblique muscle overaction (IOOA) is a common ocular motility disorder. Ocular Vestibular Evoked Myogenic Potentials (oVEMP) are tests that evaluate the reflex pathway between the utricular macula and the inferior oblique muscle to detect vestibular diseases. Our study is of great importance as it is the first study in the literature to evaluate the effect of inferior oblique muscle overaction on oVEMP parameters. Methods: Thirty-five patients with unilateral inferior oblique muscle overaction (IOOA group) and 18 healthy volunteers without any neurological or vestibulocochlear disease were included in this study. All patients and healthy volunteers were evaluated with oVEMP. Results: No statistically significant difference was found between the n1 latency, p1 latency, n1-p1 latency measurement values of the participants included in the study (p>0.05). A statistically significant difference was found between the n1-p1 amplitude measurement values of the participants in patient groups (non-squint eyes, squint eyes) and control groups (p-value was 0.038). Conclusion: In IOOA patients, vestibulo-ocular reflex pathway may be affected, vestibular symptoms may develop thus o-VEMP responses may be affected. A careful anamnesis should be taken in IOOA patients, and it should be kept in mind that n1-p1 amplitudes and asymmetries may be significantly higher when o-VEMP is performed
Effects of Covid-19 on the audio-vestibular system
(W B Saunders Co-Elsevier Inc, 2021) Tan, Mehmet; Cengiz, Deniz Ugur; Demir, Ismail; Demirel, Sumeyye; Colak, Sanem Can; Karakas, Oguz; Bayindir, Tuba
Purpose: It was aimed to investigate the effects of COVID-19 infection on hearing and the vestibular system. Methods: Twenty-six patients whose treatment had been completed and who had no previous hearing or balance complaints were included in the study. Patients diagnosed with the disease by PCR were included in the study. Patients with at least one month of illness were included in the study. The hearing of patients was evaluated with transient evoked otoacoustic emissions (TEOAE) and pure-tone audiometry. Bedside tests, the European Evaluation of Vertigo scale (EEV), Video Head Impulse Test (vHIT), Ocular Vestibular Myogenic Evoked Potential (oVEMP), Cervical Vestibular Myogenic Evoked Potential (cVEMP) and Videonystagmography (VNG) tests were applied to evaluate the vestibular system. Results: A statistically significant difference was found between the COVID-19 positive and control groups according to the mean values of the 4000 Hz and 8000 Hz in both the right and left ears (p < 0.05). No statistically significant difference was found in the other frequencies and TEOAE. No statistically significant difference was found between the COVID-19 positive and control groups in terms of their normal or pathological VNG saccade, optokinetic and spontaneous nystagmus values (p > 0.05). The normal and pathological VNG head shake values were found to be significantly different between the COVID-19 positive and control groups (p < 0.05). Conclusion: The high frequencies in audiometry in the COVID-19 positive group were worse than those in the control group. In the vestibular system, especially in oVEMP and cVEMP, asymmetric findings were obtained in comparison to the control group, and a low gain in vHIT was shown. This study shows that the audiovestibular system of people with COVID-19 infection may be affected.
EFFECTS OF GAZE POSITION ON OCULAR VESTIBULAR EVOKED MYOGENIC POTENTIAL (oVEMP)
(Dokuz Eylul Univ Inst Health Sciences, 2023) Cengiz, Deniz Ugur; Demir, Ismail; Colak, Sanem Can; Demirel, Sumeyye; Karababa, Ercan; Bayindir, Tuba
Purpose:To compare ocular vestibular evoked myogenic potential (oVEMP) responses obtained with superomedial and oblique gaze positions. Material and 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). The asymmetry values obtained in the Superomedial and oblique gaze positions had no effect on the N1, P1, and N1-P1 latencies of the waves obtained from the 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.
Effects of the Kahramanmaras, Turkey 2023 earthquakes on balance perception, dizziness and post-traumatic stress: A relational screening model between subjective balance problems and post-traumatic stress
(Elsevier Sci Ltd, 2024) Cengiz, Deniz Ugur; Inceoglu, Feyza; Karababa, Ercan; Polat, Ani Parabakan; Yilmaz, Tugba; Kuntman, Berna Deniz; Men, Asya Fatma
Objective: The aim of the present study was to investigate the effects of the February 6, 2023, earthquakes in Turkey and recurrent aftershocks on balance and post-traumatic stress in surviving victims. Methods: Our study included 1004 participants aged 18 -65 years who were exposed to the February 6 earthquakes and aftershocks in Turkey. After obtaining online consent from all participants, the Vertigo Symptom Scale (VSS), the Dizziness Handicap Index (DHI), and the Posttraumatic Post-Traumatic Disorder Checklist Scale (PCL-5) were administered online, and the interactions between the variable sets were examined using a correlational screening model. Results: As a result of the structural equation model established with the observed variables, it was found that VSS total scores had a statistically significant positive effect on PCL-5 (beta 1 = 0.56; p = 0.001 < 0.05). In addition, statistically significant positive high-level correlations were found between VSS and DHI (cov(VSS-DH)I = 0.71), and a positive low level correlation with the number of days with dizziness (cov(VSS-number of days with dizziness) = 0.34), and a positive low level correlation with frequency of days with dizziness (cov VSS-frequency of days with dizziness = 0.37). A statistically significant positive low-level relationship was found between DHI and the number of days with dizziness (cov(DHI-number of days with dizziness) = 0.34) and a positive low-level correlation between DHI and the frequency of days with dizziness (cov(DHI-frequency of days with dizziness) = 0.29). Conclusion: The structural equation modeling analysis showed that post-traumatic stress disorder had a significant effect on balance and dizziness.
Effects of valproic acid and levetiracetam monotherapy on balance functions in patients with generalized epilepsy
(Academic Press Inc Elsevier Science, 2024) Cengiz, Deniz Ugur; Colak, Sanem Can; Ozdemir, Emre Akgun; Adiguzel, Ahmet
Background: It is reported that antiepileptic drugs have an effect on balance functions. The aim of the study was to evaluate and compare the effects of valproic acid and levetiracetam monotherapy on balance functions in patients with generalized epilepsy using objective test methods. Methods: The study included 43 generalized epilepsy patients aged 18-60 years, including 20 patients receiving valproic acid monotherapy, 23 patients receiving levetiracetam monotherapy, and 25 healthy individuals as controls, in the Neurology Clinic of a university hospital in eastern Turkey. The demographic data form was filled out and the Video Head Impulse Test and Vestibular Evoked Myogenic Potentials test were performed. Results: Statistically significant differences were obtained between the groups in lateral, posterior, and anterior semicircular canal gains and RALP and LARP asymmetry values in the V-HIT test (p < 0.05). Statistically significant differences were obtained between the groups in P1, N1 latency and asymmetry values in the C-VEMP test and in N1, P1 latency, amplitude, and asymmetry values in the o-VEMP test (p < 0.05). Conclusion: Valproic acid and levetiracetam may affect the vestibulocular and vestibulocolic reflex pathways negatively. In this cohort, valproic acid had more pronounced adverse effects on balance functions as compared to levetiracetam.
Evaluation of Articulation Disorder on Mental Disabled Children Between 3-7 Ages
(Galenos Publ House, 2017) Unsal, Selim; Ucak, Meryem Merve; Bal, Fatih; Sarigul, Ahmet Yasin; Cengiz, Deniz Ugur
Introduction: The aim of this thesis is to make a scientific research about the effects of mental deficiency on articulation disorders in mentally retarded children by comparing those children to the regular ones and provide the findings. Methods: The sample group of the research consists of 30 children (23 males and 7 females) with mild mental retardation whose ages range from 3 to 7 years old and 30 children (13males and 17 females) with regular mental development. The participants receive education in a special education and rehabilitation centre located. Both of the sample groups have received Ankara Articulation Test (AAT) developed by Ege, Acarlar and Turan (2004). The effects of family income, educational background of the family, gender and age factors on articulation disorders have been examined. Getting a high score from AAT test shows that is articulation disorder. Results: Mentally retarded children got higher scores than the children with normal development (p=0,000). When these two groups analysed in terms of gender, it is identified that there is a huge difference between the genders in respect to articulation sores (p<0,05). When the groups analysed according to their economic situation, mentally retarded children coming from low and lower-middle income families have less articulation problems than those who are in the high-income group (p<0,05). When the groups analysed according to educational backgrounds of the parents, there is no statistically striking difference (p>0,05), in lower education than high school while there is a noticeable difference in higher education than high school. (p<0,05). When the groups analysed according to the age factor, articulation points with no meaningful difference in the direction 3-4 years (p>0,05) but significant difference was observed between the two groups in age 5-6-7 (p<0,05). Discussion and Conclusion: Children with mild mental disabilities has articulation disorder more than the normal children.
Evaluation of the efferent auditory system in COVID-19 adult patients
(Taylor & Francis Ltd, 2022) Emekci, Tugba; Dundar, Mehmet Akif; Kirazli, Gulce; Kilinc, Fatma Men; Cengiz, Deniz Ugur; Karababe, Ercan; Inceoglu, Feyza
Background The short- and long-term effects of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on the medial olivocochlear reflex and outer hair cells in the cochlea remain largely unclear. Aims The aim of this study was to investigate the efferent auditory system effects in adult patients with COVID-19. Materials and methods The study included 18-50 years old 44 volunteers: 26 individuals (52 ears) with COVID-19 in the study group and 18 healthy individuals (36 ears) in the control group. Otolaryngological examination, immitancemetric evaluation, distortion product otoacoustic emission (DPOAE), contralateral acoustic stimulation with DPOAE, audiometric evaluation, and high frequency audiometric evaluation were performed in all individuals participating in the study. Results In our study, patients with COVID-19 had significantly lower DPOAE results with or without broadband noise at only 6 kHz frequency and contralateral suppression results at all frequencies compared to healthy individuals. A statistically significant difference was found between the study and control groups according to whether the participants had a response in the high frequency audiometry at 12 and 16 kHz frequencies. Conclusions COVID-19 affects many systems in the body. As a result of the findings obtained in the present study, it is shown that the auditory efferent system may also be affected.
Evaluation of vestibular functions in patients with obstructive sleep apnea syndrome
(Taylor & Francis Ltd, 2023) Cengiz, Deniz Ugur; Buyuklu, Adnan Fuat
Background: To determine the anatomical proximity of the vestibular nuclei to the respiratory nuclei and the effect of susceptibility of the posterior labyrinth to a hypoxic state on the vestibular system.Objective: It was aimed to evaluate the possible effects of periodic hypoxia on vestibular reflexes and proprioceptive perception in patients with obstructive sleep apnea syndrome (OSAS).Material and methods: The study was conducted with 40 patients diagnosed with moderate and severe OSAS and 21 healthy individuals. All individuals were evaluated with Dizziness Handicap Inventory, ocular vestibular evoked myogenic potential (oVEMP), cervical vestibular evoked myogenic potential (cVEMP), video head impulse test (vHIT), videonystagmography (VNG) and sportKAT 3000.Results: In the vHIT, a statistically significant difference was found between the groups in terms of anterior and posterior semicircular canal vestibulo-ocular reflex gains (p < .05). A negative correlation was found between the lateral gain asymmetry and RALP gain asymmetry and the awake blood oxygen level in the OSAS groups. There was a statistically significant difference between the groups in terms of wave response rates cVEMP 100 dB nHL and oVEMP 100-110 dB nHL (p < .05).Conclusion and Significance: It was concluded that vestibular reflexes and proprioceptive perception were affected due to periodic/chronic hypoxia in patients with moderate and severe OSAS.
Evaluation of vestibulo-ocular reflex with functional head impulse test in healthy individuals: normative values
(Frontiers Media Sa, 2023) Cengiz, Deniz Ugur; Erbek, Hatice Seyra; Colak, Sanem Can; Kurtcu, Busra; Demirel Birisik, Sumeyye; Karababa, Ercan; Kusman, Busra
Objectives: This study aimed to determine the normative values of the functional head impulse test (fHIT) test in healthy young adults.Materials and methods: The study included 100 individuals, 58 females and 42 males, aged 20-25 years. Beon Solution Zero Branco (TV) fHIT test was applied to all participants. FHIT results were analyzed in terms of lateral-posterior-anterior semicircular canals (SSCs), gender, and right-left ear.Results: In the fHIT test, for the lateral SSC the mean percent correct answer (%CA) values for 4,000-6,000 degrees/s(2) and 1,000-7,000 degrees/s(2) were 88.52 +/- 9.04 and 89.91 +/- 6.95, respectively; for the posterior SSC, the mean %CA values for SSC 3000-6,000 degrees/s(2) and 1,000-7,000 degrees/s(2) were 90.63 +/- 8.69 and 91.16 +/- 7.42, respectively; for the anterior SSC, the mean %CA values for 3,000-6,000 degrees/s(2) and 1,000-7,000 degrees/s(2) were 91.21 +/- 7.96 and 91.49 +/- 7.13, respectively. There was no statistically significant difference between the right and left ear in %CA values at all accelerations in all SSCs (p > 0.05). There was a statistically significant difference between genders in the mean %CA values for 6,000-7,000 degrees/s(2), 4,000-6,000 degrees/s(2), and 1,000-7,000 degrees/s(2) in the lateral SSC and 3,000-6,000 degrees/s(2) in the anterior SSC (p < 0.05).Conclusion: The FHIT is a noninvasive test battery that functionally evaluates the VOR of the six semicircular canals. In clinical use, the determination of normative values at all accelerations (1,000-7,000 degrees/s(2)) constitutes an important database for future studies to distinguish pathologic results.
Investigation of the Relationship Between BPPV with Anxiety, Sleep Quality and Falls
(Galenos Publ House, 2022) Cengiz, Deniz Ugur; Demir, Ismail; Demirel, Suemeyye; Colak, Sanem Can; Emekci, Tugba; Bayindir, Tuba
Objective: To investigate the effects of dizziness on sleep quality and psychological status in patients with benign paroxysmal positional vertigo (BPPV) and to evaluate its relationship with falls.Methods: A Demographic Data Form, a Visual Vertigo Analog Scale, the Falls Efficacy Scale -International (FES-I), the Hospital Anxiety and Depression Scale (HADS), and the Pittsburgh Sleep Quality Index (PSQI) were administered in 102 individuals diagnosed with BPPV by videonystagmography test. The same scales were applied to 75 healthy volunteers as the control group, and the two groups were compared. The BPPV group was divided into two groups as posterior canal and lateral canal BPPV. These two groups were compared among themselves and with the control group.Results: A statistically significant difference was found between the BPPV and control groups, the lateral canal BPPV and posterior canal BPPV groups, the lateral canal BPPV and control groups, and the posterior canal BPPV and control groups in terms of total scores of the PSQI, the FES-I, and the HADS (p<0.001). In the regression model, the FES-I score was fully explained by the PSQI and HADS scores (p<0.001).Conclusion: BPPV significantly affects sleep quality, psychological state, and the risk of fall. The negative effects of BPPV restrict daily living activities, affect the prognosis of the disease, and increase the risk of falling. Considering that psychiatric issues and sleep problems increase the risk of falling in individuals with BPPV, counseling services on this issue would reduce the incidence of falls and related injuries.
Management of residual dizziness following successful repositioning maneuvers in posterior semicircular canal benign paroxysmal positional vertigo: a randomized controlled trial
(Springer, 2026) Cengiz, Deniz Ugur; Mazooglu, Busra
Purpose The aim was to evaluate the effectiveness of Brandt-Daroff exercises in the management of residual dizziness following successful repositioning maneuvers in posterior semicircular canal BPPV. Methods A total of 67 individuals, comprising 46 women and 21 men aged between 18 and 60 years, were included in the study. Following successful repositioning maneuvers, participants were randomly assigned to two groups. One group received Brandt-Daroff exercises after the successful maneuver, while the other group did not receive any exercises. Subjective assessments were conducted at three different time points: at the time of diagnosis, one week after the successful repositioning maneuver, and at the end of the first month. The diagnostic process was monitored using videonystagmography (VNG), while the assessment phase included the administration of the Dizziness Handicap Inventory (DHI) and the Visual Analog Scale (VAS). Results A statistically significant difference was found between the groups that performed Brandt-Daroff exercises and those that did not in terms of the total score of the Dizziness Handicap Inventory, as well as its emotional, physical, and functional subscale scores (p < 0.05). A statistically significant difference was also observed between the two groups in Visual Analog Scale (VAS) scores (p < 0.05). Conclusions Brandt-Daroff exercises were found to be effective in the management of residual dizziness following successful repositioning maneuvers.
Normative values for semicircular canal function with the video head impulse test (vHIT) in healthy adolescents
(Taylor & Francis Ltd, 2021) Emekci, Tugba; Ugur, Kadriye Serife; Cengiz, Deniz Ugur; Kilinc, Fatma Men
Background The vHIT device, which has a mechanism based on measuring the VOR gain, helps us to quickly evaluate six semicircular canals. Aims/Objectives The aim of this study was to establish normative values for semicircular canal function with the video head impulse test (vHIT) battery in normal adolescents. Material and methods 100 (50 females, 50 males) individuals aged 11-18 years, with a mean age of 14.99 years, were included in the study. Results As a result of the vHIT evaluations performed with vHIT Otometrics ICS Impulse A/S Taastrup, Denmark, the mean lateral canal vestibulo-ocular reflex (VOR) gain value was 0.96, the mean anterior canal VOR gain value was 0.89, and the mean posterior canal VOR gain value was 0.87, all of which were within the normal value range. Conclusion and significance While the VOR gain values and asymmetry values are within the normal value range and are similar to the literature, no statistically significant correlation was observed between these values and age. As a result, the vHIT battery is an easy, fast, and practical test method that can be used in adolescents.
Psychometric properties of the Turkish version of the Vestibular Migraine Patient Assessment Tool and Handicap Inventory
(Tubitak Scientific & Technological Research Council Turkey, 2024) Cengiz, Deniz Ugur; Inceoglu, Feyza; Karababa, Ercan; Satar, Buelent; Erbek, Hatice Seyra; Bayindir, Tuba; Kurtcu, Buesra
Background/aim: There are insufficient tools to assist in the diagnosis and treatment of vestibular migraine. Hence, the aim of this study was to perform the Turkish adaptation of the Vestibular Migraine Patient Assessment Tool and Handicap Inventory (VM-PATHI). Materials and methods: After the language and content validity was completed, a pilot study was conducted. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted to test construct validity, and as a result of the validity analyses, Cronbach's alpha internal consistency coefficient and test-retest analyses were conducted for reliability. Results: In the study, in which 289 participants were evaluated, the Kaiser-Meyer-Olkin coefficient was calculated as 0.903. The percentage of variance explained by the EFA was 67.246% and the range of factor load change was 0.433-0.828. The scale structure was tested with CFA and the model was confirmed with adequate goodness of fit index values. The Cronbach's alpha internal consistency coefficient of the scale was 0.931. Conclusion: The VM-PATHI is a valid and reliable tool for the subjective evaluation of vestibular migraine in T & uuml;rkiye.
The short-term effect of COVID-19 on the cochleovestibular system in pediatric patients
(Elsevier Ireland Ltd, 2023) Demir, Ismail; Aydin, Sukru; Cengiz, Deniz Ugur
Objectives: The audio-vestibular equivalent of neurological symptoms secondary to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has been discussed; however, it has not been fully clarified. Although it has been reported that the vestibulocochlear system is affected in adult coronavirus disease-2019 (COVID-19) patients, there is no study in the literature in which the pediatric patient group with COVID-19 was evaluated comprehensively with auditory and vestibular tests. In this study, the short-term damage caused by SARS-CoV-2 in the vestibulocochlear system in pediatric patients was examined.Methods: This study aimed to evaluate the vestibulocochlear system of pediatric patients (aged 9-15 years) with a recent history of COVID-19. The study included 35 individuals with a recent history of COVID-19 and 35 age -gender-matched healthy individuals (control group). Pure tone audiometry, suppressed otoacoustic emission (OAE), video head impulse test (VHIT), and cervical and ocular vestibular evoked myogenic potentials (c/o-VEMP) tests were administered to all participants following their otoscopic examinations, and the obtained data were compared between the two groups.Results: When the data obtained with pure tone audiometry were compared, statistically significant differences were found between the groups at four different frequencies (1000, 2000, 4000, and 8000 Hz) in favor of the control group. There was a statistically significant difference between the groups in the signal-to-noise ratio (SNR) values obtained before noise at 2800 Hz and before and after noise at 4000 Hz. VHIT lateral gain, LARP gain, and RALP gain were statistically significantly lower in the COVID-19 group than in the control group (p < 0.05). VHIT lateral asymmetry parameter was measured higher in the COVID-19 group than in the control group, and this difference was statistically significant (p < 0.05). In the VHIT test, the asymmetry parameter was significantly higher in the COVID-19 group (p < 0.05). In the o-VEMP test, n10 latency, p15 latency, n10-p15 interlatency, n10-p15 interpeak amplitude, and asymmetry parameters were measured, and no statistically significant difference was found between the COVID-19 group and the control group (p > 0.05). Conclusion: Evidence was obtained that the cochleovestibular system was damaged in pediatric patients in the early post-COVID-19 period.

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