Audiology and Neuro-Otology最新文献

{"title":"The Effect of Different Adaptation Formulas on Mid-Latency Auditory Evoked Potentials in Adults with Hearing Aids.","authors":"Nedim Ugur Kaya, Emine Aydin, F Ceyda Akin Ocal, Bulent Satar","doi":"10.1159/000541023","DOIUrl":"10.1159/000541023","url":null,"abstract":"<p><strong>Introduction: </strong>We were conducting this study to evaluate the effects of different hearing aid adaptation formulas on middle latency responses (MLR) in adult hearing aid users.</p><p><strong>Methods: </strong>The study included 72 participants: those with moderate hearing loss using hearing aids with two different formulas for the last year, those with moderate hearing loss not using hearing aids, and those without hearing loss. Sixteen participants using NAL-NL1 and NAL-RP formulas were group 1; twenty using NAL-NL2 and DSL formulas were group 2; fifteen with hearing loss not using devices were group 3; and twenty-one without hearing loss were group 4. We obtained and compared MLR responses, including Na latency, Pa latency, and Na-Pa amplitude.</p><p><strong>Results: </strong>Group 1 mean Na-Pa amplitude value was found to be higher than group 2 (p = 0.001). No significant difference was observed between group 1 and group 2 in terms of Na latency and Pa latency values (p = 0.001; p = 0.035). It was observed that the mean Na-Pa amplitude values in group 1 and group 2 were higher than group 3 (p = 0.001), but this elevation reached the level of statistical significance only in group 1. No difference was observed between group 1, group 2, and group 3 in terms of Na latency and Pa latency values (p = 0.001; p = 0.035). Compared with those without hearing loss (group 4), participants with hearing loss (group 1, group 2, and group 3) had longer Na latency and Pa latency values (p = 0.001; p = 0.035), and Na-Pa amplitudes were lower (p = 0.001). The effect of current (tested) hearing aid usage time on Na latency, Pa latency, and Na-Pa amplitude values of group 1 and group 2 was not observed. In all groups, there was a positive correlation between audiometric airway/bone conduction pure tone averages and speech acquisition threshold values, Na latency and Pa latency values, and a negative correlation between Na-Pa amplitude values. In all groups, there was a negative correlation between speech discrimination scores and Na and Pa latency values, as well as a positive correlation between Na and Pa amplitude values. There was a positive correlation between age and Pa latency values in all groups, as well as a negative correlation between Na and Pa amplitude values.</p><p><strong>Conclusion: </strong>MLRs are affected by the presence of hearing loss, the use of hearing aids, and different hearing aid adaptation formulas. MLR measurements with a hearing aid can be used as an objective test to evaluate the benefit of hearing aid use.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"176-186"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Social Life and Communication Skills of School-Age Children with Congenital Hearing Loss Who Received Cochlear Implants at an Advanced Age.","authors":"Kyoko Shirai, Yusuke Saito, Keiichi Satoh, Ayako Tomizawa, Naoko Nonami, Sachi Maeda, Nobuhiro Nishiyama, Ryota Tomioka, Kiyoaki Tsukahara","doi":"10.1159/000543716","DOIUrl":"10.1159/000543716","url":null,"abstract":"<p><strong>Introduction: </strong>Despite improved hearing, children who receive cochlear implants (CIs) at a later age encounter difficulties in adapting to society, exposing them to psychological and social risks. This study contributes to the conceptualisation of preventive interventions in schools to address potential issues so that these children can play a more active role in society.</p><p><strong>Methods: </strong>A total of 52 children (aged 3-12 years) who received CIs at 30 months of age were assessed using the Asahide-Shiki Social Adaptive skills test, which evaluates children's social skills on four domains: (A) language, (B) everyday life, (C) social life, (D) communication.</p><p><strong>Results: </strong>Overall, the average score of children who receive CIs at a later age was lower than that of their hearing peers. Pre-school children obtained statistically lower scores in all skills. While this general lag in skill development was no longer observed in the lower grades of elementary school, the upper-grade school children presented lower scores than their hearing peers, although only those pertaining to everyday and social life skills were statistically significant. Accordingly, the average scores were distributed in an inverted V shape among age groups.</p><p><strong>Conclusion: </strong>These results suggest that children who receive CIs at a later age develop their social skills later than their peers with normal hearing in preschool, catch up to their peers in the 1st to 3rd grades, and then lag in the 4th to 6th grades. Accordingly, acquiring age-appropriate social skills in the upper grades remains a challenge for children who obtained CIs at the age of approximately 3, suggesting the need for intervention programs for school-age children even when they do not show significant language acquisition delays.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"282-293"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143030104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early Deficits in Speech Perception in Carriers of the p.Pro51Ser Variant in the <italic>COCH</italic> Gene: A Prospective Longitudinal Evaluation of Speech Perception in Quiet and Noise.","authors":"Julie Moyaert, Hanne Gommeren, Griet Mertens, Marc J W Lammers, Olivier Vanderveken, Sebastien Janssens de Varebeke, Nicolas Verhaert, Sam Denys, Raymond van de Berg, Ronald Pennings, Erik Fransen, Vincent Van Rompaey, Annick Gilles, Julie Moyaert","doi":"10.1159/000543263","DOIUrl":"10.1159/000543263","url":null,"abstract":"<p><p><p>Background and Aim: The primary concern among adults with regard to their hearing is the difficulty in comprehending speech, particularly in noisy environments. The constant need to listen attentively leads to heightened frustration, fatigue, and decreased concentration. According to research, high-frequency hearing loss could have negative implications on speech perception and make it even harder to communicate. In this study, the focus is on patients with DFNA9 as it is one of the most common forms of non-syndromic high-frequency hearing loss. These patients carry the p.Pro51Ser variant in the COCH gene, which leads to progressive decline of hearing and vestibular function. Despite various cross-sectional studies on the natural progression of hearing levels, speech perception in silence and noisy surroundings is largely unexplored in this group of patients.</p><p><strong>Method: </strong>For the longitudinal analysis of speech perception, 101 heterozygous carriers of the p.Pro51Ser variant in the COCH gene were enrolled. In addition, a control group composed of individuals with normal hearing, who matched the patients with DFNA9 in the study in terms of age and sex, was recruited. All patients underwent pure-tone audiometry, speech perception in quiet (SPIQ), and speech perception in noise (SPIN).</p><p><strong>Results: </strong>The SPIQ outcomes reveal a mean speech reception threshold (SRT) of 28.18 dB SPL for male carriers and 29.29 dB SPL for female carriers in the youngest age-group (18-29 years). With increasing age, a steep decrease was noticed, and no speech discrimination ability in quiet remained for carriers in their seventh decade. Differences between carriers and control participants seem evident in the third decade of life and become more pronounced in the decades that follow. The SPIN displayed a similar trend, varying from -5 dB SNR in the youngest age-group, to no speech-in-noise thresholds in patients above the age of 60 years. In contrast, the matched group exhibited a SRT range from -5.5 to -3.25 dB SNR for males, and from -6.23 to -4.58 dB SNR for females from the second/third to the seventh decade. This stands in contrast to the DFNA9 population, where male carriers reach values of -5.18 dB SNR and female carriers reach -3.12 dB SNR as early as in the fourth decade.</p><p><strong>Conclusion: </strong>This study indicates poor performance on speech understanding in quiet and noise in DFNA9 patients in comparison with the group with normal hearing, even at a young age. Therefore, future research should not only investigate pure-tone audiometry, but also speech perception. Moreover, reimbursing hearing aids based on speech-in-noise testing could prove to be more advantageous than based on pure-tone audiometry. </p>.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"297-311"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12360731/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143048874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impedance and Functional Outcomes in Robotic-Assisted or Manual Cochlear Implantation: A Comparative Study.","authors":"Guillaume Gersdorff, Nicolas Peigneux, Unal Duran, Severine Camby, Philippe P Lefebvre","doi":"10.1159/000540577","DOIUrl":"10.1159/000540577","url":null,"abstract":"<p><strong>Introduction: </strong>Preservation of residual hearing, mainly the low frequencies, is the current main objective of cochlear implantation. New electrode arrays and the development of minimally invasive surgery have allowed electroacoustic stimulation. Over the past several years, robotic-assisted cochlear implant surgery aimed to improve the insertion process while respecting inner ear structures. However, the introduction of a foreign body inside the cochlea can lead to the development of fibrous tissue around the electrode array, or even induce osteogenesis. These histological changes disrupt the parameters of the cochlear implant, resulting in elevated impedance. In addition, long-term auditory performance can be affected, with a deterioration in word comprehension. We evaluated the potential impact of RobOtol® on impedance changes over time, leading to potentially positive functional outcomes.</p><p><strong>Methods: </strong>Cochlear implant surgery with a round window approach was performed under general anesthesia. Fifteen Med-El Flex24 electrode arrays were inserted manually and 24 using RobOtol®. All subjects underwent pure-tone audiometry tests before the surgery and at regular intervals up to 1 year after the surgery. Based on the pure-tone average at the low frequencies from 250 to 1,000 Hz, we divided the patients according to the degree of auditory preservation (full preservation ≤15 dB, partial preservation 15 dB-30 dB, significant loss >30 dB). These different groups were compared in terms of impedance changes and auditory performance, specifically word recognition score.</p><p><strong>Results: </strong>We found proportionally fewer patients who experienced significant low-frequency hearing loss after robotic insertion (53.33% in the manual group compared to 41.67% in the robot-assisted insertion group). Impedance changes at the apex of the electrode array, especially at the first electrode (p = 0.04), after robotic surgery, with less overall variability, a continuous decreasing trend without secondary elevation, and lower values in cases of complete residual hearing preservation (for the three first electrodes: p = 0.017, p = 0.04, p = 0.045). The speech intelligibility amelioration over time showed favorable evolution in patients with complete residual hearing preservation regardless of the insertion method. However, in the absence of auditory preservation, the positive evolution continued more than 6 months after robotic surgery but stagnated after manual insertion (difference at 1 year, p = 0.038; median auditory capacity index 83% vs. 57%).</p><p><strong>Conclusion: </strong>Atraumatic electrode array insertion with consistent, slow speed and the assistance of RobOtol® minimizes disturbances in the delicate neurosensory structures of the inner ear and leads to better auditory performance.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"80-88"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142057400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Residual Dizziness Characteristics of Idiopathic Sudden Sensorineural Hearing Loss Patients with Benign Paroxysmal Positional Vertigo.","authors":"Jing Yang, Gaoyun Xiong, Hongyi Lu, Xiandan Luo, Xiaoxing Xie, Aoling Shao","doi":"10.1159/000540036","DOIUrl":"10.1159/000540036","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;ISSNHL, a common clinical condition, can be accompanied by vertigo. Initially, research on sudden deafness primarily focused on the hearing loss itself, with less emphasis on episodic vertigo. However, as vertigo research has advanced, it has been recognized that BPPV is a frequent accompaniment to ISSNHL-associated vertigo. Even after treatment, some patients may experience residual dizziness. This study investigates the characteristics of patients with ISSNHL accompanied by BPPV and the impact of residual dizziness on their lives.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;This study is being conducted on patients with ISSNHL accompanied by BPPV, analyzing the characteristics of such patients and the impact of residual dizziness on their lives. Overall, 54 adult inpatients with ISSNHL and BPPV were included in this study. All patients received 50 mg of intravenous prednisolone for 5 consecutive days and hemodilution agents for 10 days. At the same time, BPPV was treated with repositioning by the same therapist using the SRM-IV vertigo diagnostic and treatment system, and different repositioning methods were used for different types of otolithiasis. Patients were grouped according to the absence of residual dizziness when the nystagmus disappeared at the time of discharge.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;There were 24 cases in the group with residual symptoms, including 10 males and 14 females. The proportion of females was 58.33%, with an average age of 46.75 ± 13.80. The group without residual symptoms consisted of 30 cases, including 13 males and 17 females. The female proportion was 56.67%, with an average age of 45.77 ± 11.86. There is no statistical significance between the two groups in the pre-treatment hearing status and DHI scores. The HAMA (Hamilton Anxiety Rating Scale) scores before treatment were compared, revealing a significant statistical difference.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;ISSNHL-associated BPPV may be caused by vascular embolism or thrombosis in the cochlear or spiral modiolar artery. This disrupts blood flow, leading to ischemia in the otolithic membrane and subsequent detachment of otoconia. Because this detachment often occurs within 24 h of the initial event, patients experience positional vertigo early in the course of the disease.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;ISSNHL, a common clinical condition, can be accompanied by vertigo. Initially, research on sudden deafness primarily focused on the hearing loss itself, with less emphasis on episodic vertigo. However, as vertigo research has advanced, it has been recognized that BPPV is a frequent accompaniment to ISSNHL-associated vertigo. Even after treatment, some patients may experience residual dizziness. This study investigates the characteristics of patients with ISSNHL accompanied by BPPV and the impact of residual dizziness on their lives.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;This study is being conducted on patients with ISSNHL accompa","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"45-51"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11809453/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141789934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effects of Memantine on Cisplatin-Induced Ototoxicity.","authors":"Selis Gülseven Güven, Hilal Erdoğan, Murat Arslan, Onur Ersoy, Erdoğan Bulut, Özlem Tuğçe Çilingir Kaya, Serap Şirvancı, Cem Uzun","doi":"10.1159/000542496","DOIUrl":"10.1159/000542496","url":null,"abstract":"<p><strong>Introduction: </strong>We aimed to investigate electrophysiologically and histopathologically, the protective effects of intratympanic memantine, an N-methyl-<sc>D</sc>-aspartate receptor antagonist, on ototoxicity caused by cisplatin, an anti-neoplastic agent used in many types of cancer.</p><p><strong>Methods: </strong>Thirty-seven guinea pigs with a normal auditory function were randomly allocated to group 1 (cisplatin; n = 8), group 2 (memantine; n = 8), group 3 (cisplatin + memantine; n = 8), group 4 (cisplatin + physiological serum [PS]; n = 8), and group 5 (control; n = 5). Auditory assessments were conducted using distortion product otoacoustic emissions (DPOAE) within a frequency range of 1-32 kHz and auditory brainstem responses (ABRs) within 8-32 kHz. A single dose of cisplatin (12 mg/kg) was administered intraperitoneally, followed by intratympanic administration of 0.2 mL of either memantine or PS to both ears at least half an hour before cisplatin administration. Subsequent auditory evaluations were conducted 72 h after cisplatin administration. Histopathological analyses were performed using light microscopy of the right ear and scanning electron microscopy (SEM) of the left ear.</p><p><strong>Results: </strong>Auditory evaluations conducted before and after treatment revealed significant findings. Specifically, within groups 3 and 4, ABR thresholds were elevated at all frequencies (p = 0.00), whereas the DPOAE signal-to-noise ratios were reduced at frequencies of 8, 12, 16, and 24 kHz (p = 0.001, p = 0.01, p = 0.01, and p = 0.00, respectively). Histopathologically, both light microscopy and SEM revealed that the cisplatin + memantine group exhibited fewer hair cells and nuclear degeneration in the spiral ganglion than the cisplatin and cisplatin + PS groups. Additionally, the stria vascularis thickness was greater in the cisplatin + memantine group than in cisplatin and cisplatin + PS groups.</p><p><strong>Conclusion: </strong>Despite the negative electrophysiological findings, the histopathological outcomes suggest that intratympanic memantine may have a potential protective effect against cisplatin-induced ototoxicity. However, further investigations are warranted to corroborate these findings and elucidate the underlying mechanisms of action of memantine.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"207-221"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Children with Auditory Brainstem Implants: Language Proficiency and Reading Comprehension Process.","authors":"Hilal Burcu Ozkan Atak, Filiz Aslan, Gonca Sennaroglu, Levent Sennaroglu","doi":"10.1159/000541716","DOIUrl":"10.1159/000541716","url":null,"abstract":"<p><strong>Introduction: </strong>Auditory performance and language proficiency in young children who utilize auditory brainstem implants (ABIs) throughout the first 3 years of life are difficult to predict. ABI users have challenges as a result of delays in language proficiency and the acquisition of reading comprehension, even if ABI technology offers auditory experiences that enhance spoken language development. The aim of this study was to evaluate about the impact of language proficiency on reading comprehension skills in children with ABI.</p><p><strong>Method: </strong>In this study, 20 children with ABI were evaluated for their reading comprehension abilities and language proficiency using an Informal Reading Inventory, Test of Early Language Development-Third Edition (TELD-3), Categories of Auditory Performance-II (CAP-II), and Speech Intelligibility Rating (SIR). Three distinct aspects of reading comprehension were assessed and analyzed to provide a composite score for reading comprehension abilities. TELD-3, which measures receptive and expressive language proficiency, was presented through spoken language.</p><p><strong>Results: </strong>Studies have shown that there was a relationship between language proficiency and reading comprehension in children with ABI. In the present study, it was determined that the total scores of reading comprehension skills of the children who had poor language proficiency and enrolled in the school for the deaf were also low. The children use short, basic sentences, often repeat words and phrases, and have a restricted vocabulary. In addition, the children had difficulty reading characters and detailed paragraphs and could not remember events in a logical order.</p><p><strong>Conclusion: </strong>Children with ABI may potentially have complicated reading comprehension abilities due to lack of access to all the speech formants needed to develop spoken language. In addition, variables affecting the reading levels of children with ABI include factors such as age at implantation, duration of implant use, presence of additional disability, communication model, and access to auditory rehabilitation. The reading comprehension skills of ABI users were evaluated in this study for the first time in the literature and may constitute a starting point for the examination of variables affecting reading comprehension in this area.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"134-145"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142481595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Impact of Auditory Input on Postural Control in Adults with Unilateral Cochlear Implants.","authors":"Volkan Tutar, Isa Tuncay Batuk, Merve Ozbal Batuk","doi":"10.1159/000543402","DOIUrl":"10.1159/000543402","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to investigate the impact of auditory input on postural control in young adult cochlear implant users with profound sensorineural hearing loss. The research explores the relationship between auditory cues and static postural stability in individuals with hearing impairment.</p><p><strong>Methods: </strong>Thirty-four young adult cochlear implant users, consisting of 15 males and 19 females aged 18-35 years, underwent various balance tests, including the modified Clinical Tests of Sensory Interaction on Balance (mCTSIB) and the unilateral stance test (UST), under different auditory conditions: (a) white noise stimulus present with the sound processor activated, (b) ambient noise present with the sound processor activated, and (c) sound processor deactivated. Statistical analysis was performed to evaluate the participants' postural control performance in relation to auditory stimuli.</p><p><strong>Results: </strong>Statistical analysis revealed that participants exhibited better postural control in the presence of white noise stimuli compared to when the sound processor was turned off in the UST (p = 0.001) and Fukuda Stepping Test (in terms of displacement [p = 0.004]). The composite mCTSIB scores showed no significant difference between sound processors off, sound processors on with ambient noise, and sound processors on with broadband white noise conditions.</p><p><strong>Conclusion: </strong>The findings suggest that access to auditory cues through cochlear implants plays a crucial role in preserving static postural control in young adults with hearing impairment. This study highlights the positive effect of auditory information on balance performance in individuals with cochlear implants and profound hearing loss. Future research is recommended to further explore the impact of auditory stimuli on dynamic postural abilities and to include preoperative balance assessments in individuals undergoing cochlear implantation.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"263-271"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142973425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visual Vertigo Is Not Correlated with Perception of Dynamic Verticality.","authors":"Tzu-Pu Chang, Ying-Chi Hong, Yu-Hung Kuo, Michael C Schubert, Michael C Schubert","doi":"10.1159/000543868","DOIUrl":"10.1159/000543868","url":null,"abstract":"<p><strong>Introduction: </strong>We conducted a prospective study determining the relationship between severity of visual vertigo and extent of visual dependence by comparing the visual vertigo analogue scale (VVAS) with the dynamic subjective visual vertical (dSVV) test.</p><p><strong>Methods: </strong>A total of 76 patients with chronic dizziness (without peripheral or central vestibular lesions) and 43 healthy controls completed VVAS and dSVV testing. The VVAS uses nine visual analog scales to query visual vertigo across nine specific situations. The dSVV measures visual dependence under three conditions: static background, counterclockwise (CCW) rotating background, and clockwise (CW) rotating background (20°/s). Finally, each patient completed a simulator sickness questionnaire (SSQ) to evaluate the dizziness induced from the dSVV. VVAS, dSVV, and SSQ were compared between the patient and the control groups. Among the patient group, the correlation between VVAS and dynamic SVV were determined. Associations of outcomes measures and gender, age, and migraine were also assessed.</p><p><strong>Results: </strong>Patients with dizziness had significantly greater VVAS (16.9 vs. 1.6, p < 0.001) and SSQ (25.7 vs. 6.5, p < 0.001) scores, yet less deviation of dSVV (CCW background: -9.2 vs. -11.5, p = 0.05; CW background: 7.4 vs. 10.1, p = 0.02) than controls. In the patient group, VVAS was not correlated with dynamic SVV for either CCW (r = 0.12, p = 0.30) or CW backgrounds (r = -0.01, p = 0.92). During CCW rotation, the SVV deviation was greater in older aged patients and slightly greater in female. During CW rotation, the SVV deviation was less in the patients with migraine.</p><p><strong>Conclusion: </strong>In chronic dizzy patients that have no measurable peripheral or central vestibular lesion, severity of visual vertigo is not correlated with visual dependence.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"327-334"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143451060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Concentration Dependent Effects of Human Cometin on Spiral Ganglion Neuron Survival and Neurite Outgrowth.","authors":"Jana Schwieger, Chunjiang Wei, Gordon Munro, Kenneth Ahrend Petersen, Thomas Lenarz, Verena Scheper, Jana Schwieger","doi":"10.1159/000543705","DOIUrl":"10.1159/000543705","url":null,"abstract":"<p><p><p>Introduction: Neurotrophic factors are widely known for their protective effect on spiral ganglion neurons (SGN) and the protection of these neurons is of great importance to optimize cochlear implants, which directly stimulate SGN in deaf patients. Previous studies have identified Cometin - also known as Meteorin-like - to be neuroprotective and beneficial for metabolic disorders. The aim of our study was to investigate the effects of different concentrations of recombinant human Cometin (hCometin) on SGN in regard to neuroprotection and neurite outgrowth and to evaluate its neurite guidance potential using a neurite outgrowth chamber.</p><p><strong>Methods: </strong>hCometin was initially tested in two separate dosing experiments: 5, 10, and 15 μg/mL (medium dose group) and 10, 25, and 50 μg/mL (high dose group). The hCometin was added to dissociated neonatal murine SGN. The number, morphology, and neurite length of SGN treated with hCometin were compared to untreated (negative control, NC) and brain-derived neurotrophic factor treated (BDNF, 50 ng/mL) (positive control, PC) cells. Subsequently, to investigate a potential effect on neurite guidance, 10 μg/mL hCometin was delivered via osmotic pumps to neonatal murine spiral ganglion explants (SGE) cultured in a neurite outgrowth chamber to experimentally mimic the scala tympani and the Rosenthal's canal. The amount of pump-released hCometin was measured by enzyme-linked immunosorbent assay and neurite growth was quantified and compared to a Cometin-free NC.</p><p><strong>Results: </strong>All medium dose group concentrations of hCometin resulted in significant neuronal protection, whereas high dose group concentrations (25 and 50 μg/mL) were neurotoxic. The medium dose concentrations significantly increased the number of monopolar neurons compared to NC, and 10 and 15 μg/mL hCometin increased the number of neurons with a physiological bipolar morphology to an even greater extent than BDNF. For neurite length, 5 and 10 μg/mL hCometin had the greatest effect, which was comparable with the BDNF-PC. The osmotic-pump based delivery of 10 μg/mL hCometin to SGE had no positive effect on the number, extent, or orientation of outgrowing neurites in the culture set up used.</p><p><strong>Conclusion: </strong>A concentration of 10 μg/mL hCometin significantly protects dissociated SGN from degeneration and significantly increases the outgrowth of neurites, which is favourable in view of induced neurite outgrowth towards cochlear electrode arrays for future optimisation of the nerve-electrode-interface. The study failed to detect a guided neurite outgrowth by pump-based drug release, which may be due to the experimental set up, which could be improved in future studies. </p>.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"355-373"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12360724/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143048872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}