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Öğe Assessment of balance after recovery from Covid-19 disease(Elsevier Science Ltd, 2022) Yılmaz, Oğuz; Mutlu, Berna Özge; Yaman, Handan; Bayazıt, Dilara; Demirhan, Hasan; Bayazıt, Yıldırım AhmetObjective: To answer the question whether balance related systems have been affected in adults who recovered from Covid-19 disease. This is the first case-control study to assess balance objectively and quantitatively in Covid-19 disease.Methods: Thirty-seven patients who recovered from Covid-19 disease and 30 healthy controls were compared using Dizziness Handicap Inventory (DHI), Computerized Dynamic Posturography (CDP), Vestibular Evoked Myogenic Potentials(VEMP) and Video Head Impulse Test (v-HIT).Results: On CDP, the composite and visual general scores of the patients were significantly lower than controls (p < 0.01). The v-HIT gains of the patients significantly decreased in the vertical semicircular canals compared to controls (p < 0.01).There was a significant difference between the patients and controls regarding the absence of o-VEMPs (p < 0.01) while the amplitudes and latencies were similar between the groups (p > 0.05). Decreased P1/N1 amplitudes and elongated N1 latencies were found on c-VEMP testing (p < 0.05). Anosmia, taste disorder and gender were not associated with subjective and objective test results (p > 0.05).Conclusion: The Covid-19 disease can cause dizziness rather that incapacitating vertigo. Dizziness can be seen in almost one-fifth of the adult covid19 out-patients, which may be due to involvement of vestibular and visual systems,ortheir central connections. The squeals created in the balance related systems may be irreversible as they have persisted after the recovery of the patients. It is also plausible to anticipate more severe condition in the older patients who were treated in the intensive care units. In the long term follow up of the survivors, the need for balance rehabilitation programs should be remembered in order to minimize risks of falling down.Öğe Can auditory and vestibular findings differentiate vestibular migraine and meniere’s disease?(Korean Audiological Society and Korean Otological Society, 2023) Yaman, Handan; Polat, Burcu; Şerbetçioğlu, Mustafa BülentBackground and Objectives: Besides evaluating the auditory and vestibular systems of patients with vestibular migraine (VM) and Meniere's disease (MD), this study aimed to examine the clinical overlaps between these two conditions by detailed evaluation of the patient's symptoms. Subjects and Methods: The ears of the patients with VM and MD were evaluated and patients' vestibular and auditory complaints were questioned particularly. Pure tone audiometry, vestibular evoked myogenic potential (VEMP) responses, and caloric test results were evaluated for objective measurements. Results: The VM group had better air-conduction and bone conduction threshold and speech reception threshold and speech discrimination score test values (p<0.05). Regarding the interaural N1-P1 asymmetry ratio, the cervical VEMP between the groups had significant differences (p=0.019). The MD group had more unilateral tinnitus and ear fullness complaints and canal paresis results (p<0.01). The VM group had more motion sickness complaints (p<0.01). Conclusions: If only ears with hearing loss are evaluated; there was no significant difference between VM and MD, but regardless of hearing level or only the patients with normal hearing were evaluated, the VM group had better hearing levels. It should be considered that patients with VM may have VM-independent hearing loss, and patient complaints should be sufficiently detailed to make an accurate distinction from MD.J Audiol Otol.Öğe Correlations between auditory brainstem and steady-state responses as a function of age, and severity and configuration of hearing loss(2024) Yılmaz, Oǧuz; Gündoǧdu, Oǧulcan; Mutlu, Berna Özge; Yaman, Handan; Yatmaz, Caner; Bayazıt, Dilara; Bayazıt, Yıldırım AhmetObjective The aim of this study was to assess whether the age of patients and severity and configuration of hearing loss would impact on the correlations between auditory brainstem response (ABR) and auditory steady-state response (ASSR) results. Methods ASSR and ABR test results of 806 ears were evaluated retrospectively. Results The ASSR thresholds correlated significantly with click ABR (c-ABR) thresholds (p < 0.01), especially at 2 to 4 kHz. The correlations were significant in all age groups and severities and configurations of hearing loss (p < 0.01). Conclusions Since c-ABR responses help detect hearing thresholds between 2 and 4 kHz and ASSRs help detect hearing thresholds between 0.5 and 4 kHz, these tests should be complementary when low frequencies are also involved in hearing loss. Otherwise, the outcomes of ABR and ASSR tests seem comparable independent of age of the patients and configuration and severity of hearing loss.Öğe Does migraine affect central auditory processing abilities?(2024) Yeral, Cem; Yaman, Handan; Gündoğdu, Oğulcan; Mutlu, Berna Özge; Polat, Burcu; Yılmaz, OğuzObjective: Migraine is a neurological disease associated with an altered cortical excitability level. Several studies have investigated the relationship between migraine and central auditory processing (CAP), with deficits in CAP being common among migraine patients. However, studies on the factors affecting these CAP changes observed in migraine patients are still few and controversial. This study aims to investigate CAP changes in migraine patients with Duration Pattern Test (DPT) and Frequency Pattern Test (FPT), which have not been used in previous studies. Methods: Sixty subjects were divided into two groups and one migraine subgroup: control group, twenty normal healthy subjects, fourty subjects diagnosed with migraine. They were evaluated using the CAP test including DPT and FPT. To identify the variables and possible effects of the variables, a questionnaire describing the characteristics of migraine features was administered to participants with migraine. Results: No significant difference was found the between the control and study group in CAP tests scores. No significant correlation was found between migraine characteristics and CAP tests scores. Males had significantly higher FPT scores in both ears than females (p<0.05). Significant statistical negative correlation was found between age and FPT scores for both ears and left DPT scores (p<0.05). Conclusion: Although migraine patients generally showed lower CAP ability than the control group, no significant difference was observed between them. This was also valid for subgroups of migraine. However, as age increased in the migraine group, a significant decrease in CAP performance was observed. It was observed that male migraine patients had better CAP ability, especially FPT scores. Migraine may affect performance in CAP depending on gender and age factors.Öğe Effect of general anesthesia on auditory brainstem response testing(Galenos Publishing House, 2022) Gündoğdu, Oğulcan; Yaman, Handan; Karaaslan, Pelin; Şerbetçioğlu, Mustafa BülentObjective: The auditory brainstem response (ABR) test is usually applied during natural sleep, but it can also be conducted under anesthesia. This retrospective study aimed to compare the ABR findings of a general anesthesia group and a control group that underwent ABR test during natural sleep. Methods: The anesthesia group consisted of 42 (mean age 44.5±20.3 months) children, and the control group included 58 children (36.1±16.1 months). The results of the click ABR test of the two groups were compared in terms of amplitude, latency, interpeak latencies, and hearing thresholds. Results: The amplitudes of waves III and V were significantly decreased in the general anesthesia group compared with that in the control group. The ABR latencies of waves I and V and the interpeak latencies for I-V and III-V were prolonged in the anesthesia group compared with that in the control group. Moreover, the click threshold obtained in the anesthesia group was significantly higher than those of the control group. Conclusions: Clinicians and audiologists should advise families to know the effects of general anesthesia on ABR and be cautious in interpreting the results obtained in ABR test performed under anesthesia.Öğe fNIRS-based evaluation of the impact of SARS-CoV-2 infection central auditory processing(Wiley, 2023) Yaman, Handan; Yılmaz, Oğuz; Hanoğlu, Lütfü; Bayazıt, YıldırımObjectivesCoronavirus disease-2019 due to SARS-CoV-2 infection has been associated with neurological and neuropsychiatric illnesses as well as auditory system problems. In this study, we aimed to evaluate the impact of SARS-CoV-2 infection on the central auditory system by assessing the hemodynamic activation changes using functional near-infrared spectroscopy (fNIRS).MethodsThree participants who had SARS-CoV-2 infection (study group) and four participants who had no SARS-CoV-2 infection (control group) were included in the study. During the auditory oddball task in which two different frequencies of tonal stimulation were presented at 80 dB HL, the participants were asked to pay attention to the rare tonal stimulation and mentally count these target stimuli throughout the task. During this task, oxygenated hemodynamic response functions were evaluated with fNIRS.ResultsSignificantly increased oxygenated hemodynamic responses were observed in both groups during the task (p < .05), which was significantly higher in the study group (p < .05). Significantly more HbO activation was observed in the vmPFC, superior temporal gyrus, and medial temporal gyrus in the study group compared to controls (p < .05). Significantly higher hemodynamic activation was observed in the right hemisphere in both groups, which was significantly higher in the study group (p < .05).ConclusionSARS-CoV-2 infections may impact on central auditory processing or auditory attention due to changes in oxyhemoglobin levels in the frontal and temporal brain regions. It seems that SARS-CoV-2 infection is associated with an additional load on neural activity, and difficulties in focusing in auditory attention, following speech and hearing in noise as well as increased effort to perceive auditory cues.Öğe Significance of continuing audiovestibular practice during Covid-19 pandemic(Springer, 2021) Yılmaz, Oğuz; Bayazıt, Dilara; Yaman, Handan; Mutlu, Berna ÖzgeBackground: We aimed to evaluate the significance of continuing audiovestibular practice during the Covid-19 pandemic in the audiology clinic of the university hospital.Methods: The precautions, test procedures, and risk factors associated with the practice of audiology were evaluated. The number and diagnoses of the cases between 23 March and 23 May 2020 were also compared with the results of the same 2 months in 2019 in an attempt to evaluate the alterations in the audiology practice.Results: The audiology practice has continued during the pandemic, and numerous audiovestibular tests like newborn hearing screening, pure tone and speech audiometry, auditory brainstem response (ABR) test, bedside vestibular assessment, videomystagmography (VNG), caloric test, vestibular evoked myogenic potential (VEMP), computerized dynamic posturography (CDP), video head impulse test (vHIT), intraoperative cochlear implant measurement, and postop cochlear implant fittings were performed. The number of tests has decreased significantly in the course of the pandemic (p < 0.01). No evidence of Covid-19 disease was detected in the audiology staff and patients. In general, no major risk was seen during testing under protective measures except for vestibular testing which induced vomiting and taking out the mask for lip reading during cochlear implant fitting in the elderly.Conclusion: It is possible to perform audiovestibular tests during the Covid-19 pandemic by wearing necessary protective equipment and disinfecting the potential surfaces. Vomiting during vestibular tests, uncovering the nose and mouth for lip reading, and small-sized test cabins are the main risk factors of contamination in the audiology clinics.Öğe Survey to assess the impact of the covid-19 pandemic on tinnitus perception(2024) Yılmaz, Oğuz; Yaman, Handan; Mutlu, Berna Özge; Bayazıt, Dilara; Eti, Serkan; Demirhan, Hasan; Bayazıt, Yıldırım AhmetObjective: This study aimed to evaluate the effect of coronavirus disease-2019 (COVID-19) on the perception of tinnitus in the population. Methods: A web-based Google survey was performed between May and April 2020, and 1895 volunteers answered questions mainly related to demographic data, daily lifestyle during the pandemic, aural problems, and the presence of tinnitus. Participants with tinnitus were further evaluated using a visual analog scale (VAS) and Tinnitus Handicap Inventory (THI). Results: Of 1895 participants, 184 (9.4%) had tinnitus. Of 184 participants with tinnitus, 64.7% had tinnitus onset before the pandemic, whereas 35.3% had tinnitus onset after the pandemic. There was no significant difference between the parameters of the participants who had no tinnitus and those who had tinnitus onset before and after the pandemic (p>0.05). There was no significant difference between the THI results of the participants with tinnitus onset before and after the pandemic (p>0.05). The VAS scores of the participants with tinnitus onset after the pandemic were higher than those of the participants with tinnitus onset after the pandemic (p<0.05). The participants who had a tinnitus onset before the pandemic described alterations in their tinnitus perception as increased, decreased and unchanged tinnitus perception in 28.8%, 13.4% and 57.8%, respectively. Conclusion: Because of this study, we observed that the COVID-19 pandemic did not increase tinnitus and tinnitus-related problems. However, because of the life-threatening risks that come with the pandemic, people may not consider the effects of tinnitus as a primary problem.Öğe Vestibüler uyarımların sanal gerçeklik tabanlı bedensel benlik bilinci üzerine etkisi(İstanbul Medipol Üniversitesi, Sağlık Bilimleri Enstitüsü, 2022) Yaman, HandanBilinç klasik olarak uyanıklık ve farkındalık biçiminde tarif edilir. Damasio, bilinçliliğin ortaya çıkabilmesi için bu değişimin yeterli olmadığını, temel bir elemanın eksik kaldığını, bunun da "self" olduğunu iddia etmektedir. Bilincin nörobiyolojik mekanizmalarını incelemeye yönelik nörobilimsel çabalara rağmen, öz-bilinç kavramı daha az ilgi görmüştür ve birçok bilim adamı tarafından sinirbilimsel deneylerle yaklaşılmaz olarak kabul edilmiştir. William James, Maurice Merleau-Ponty ve James Gibson gibi bilim insanları ve filozoflar bedensel algı ve bedensel deneyimle ilgili psikolojik, fizyolojik ve sinirsel mekanizmaların araştırılmasının, öz-bilinç anlayışı için çok önemli olabileceğini öne sürmüştür. Çalışmada; sağlıklı bireylerde bedensel benlik-bilincinin ortaya çıkmasında, merkezi ve periferik sistem mekanizmalarının yapay vestibular uyarımı ile katılımcıların sanal gerçeklik ortamındaki performansları, fNIRS sistemi ile beyin hemodinamik yanıtları incelenerek literatürdeki belirsizliklerin aydınlatılması amaçlanmıştır. Bu nedenle bu çalışmanın, sağ temporo-parietal bileşke ve iç kulaktaki periferik vestibüler organların vestibüler işlemleme özelliklerinin bedensel benlik-bilinci üzerindeki etkileri beynin hemodinamik aktiviteleri ile kıyaslanarak, vestibüler stimülasyonun merkezi ve periferik sistemlerinin tam beden sahipliği üzerine etkisini araştırılmıştır.
