Hearing loss can lead to a number of disabilities and reduce quality life. Noise-induced hearing losses have become more common among adolescents due increased exposure personal music players. We, therefore, investigated the use player Korean relationship between threshold usage pattern portable players.A total 490 were interviewed personally regarding their players, including time type headphone used. Pure tone audiometry was performed in each subject.Of subjects, 462 (94.3%) used players...

A recent study demonstrated that tinnitus could be eliminated by vagus nerve stimulation (VNS) paired with notched sounds in a rat model. The aims of this clinical were to investigate the effects and safety transcutaneous VNS (tVNS) patch-type electrode music for treating chronic tinnitus.Thirty patients refractory >12 months included study. was attached auricular concha patient's left ear tVNS performed 30 min (pulse rate 25 Hz, pulse width 200 µs, amplitude 1-10 mA) using electric eco2....

Although cochlear damage is believed to trigger the perception of tinnitus in central auditory system, its pathophysiological mechanism still unclear. We aimed investigate pathophysiology using psychoacoustic assessments spectral and temporal resolution speech noise. Human subjects with symmetric hearing thresholds were divided into three groups: nine unilateral normal (Group 1), 12 loss (HL; Group 2), bilateral HL. Fifteen normal-hearing without also tested as a control group. Four...

Tinnitus is a multifactorial condition with no universally accepted assessment guidelines. The Korean Study Group previously established consensus statements on the definition, classification, and diagnostic tests for tinnitus. As continuation of this effort, study aims to establish expert tinnitus treatment outcome evaluation, specifically tailored clinical context. A modified Delphi method involving 26 otology experts from across Korea was used. two-round survey conducted evaluate related...

Ramsay Hunt syndrome (RHS) with multiple involvement of cranial nerves is more severe and intractable than RHS without such involvement.Typically, involves VII VIII unilaterally, accompanied by neuropathy very rare. We describe 11 patients who developed multicranial nerve we analyzed their clinical characteristics compared them those not neuropathy.During the period 1995-2009, treated 339 RHS; these, had concurrent neuropathy. assessed neuropathy.The mean age (6 men, 5 women) was 49.2 ± 19.4...

Objectives To compare tinnitus patients who have normal hearing between 250 Hz and 8 kHz with controls regard to the ability of each group hear extended high-frequency pure tone thresholds. Methods We enrolled 18 patients, whom had a threshold HL <25 dB differences <10 ears at frequencies 500 1, 2, 4, kHz. also age- gender-matched volunteers (10 ears), for patient. Extended high frequency audiometry was performed, mean thresholds 10, 12, 14, 16 ear were compared those 10 sex-matched ears....

Objective Recently, "hidden hearing loss" with cochlear synaptopathy has been suggested as a potential pathophysiology of tinnitus in individuals normal threshold. Several studies have demonstrated that subjects and audiograms show significantly reduced auditory brainstem response (ABR) wave I amplitudes compared control subjects, but V amplitudes, suggesting increased central gain. We aimed to reconfirm the theory through within-subject comparison uncomfortable loudness level (UCL), which...

Objectives/Hypothesis: Because in most cases the development of tinnitus is triggered by cochlear damage, there exists opportunity to eliminate while lesion still reversible. Therefore, we evaluated therapeutic effects various treatment modalities on acute subjective idiopathic (SIT) and investigated prognostic factors affecting outcome. Study Design: Prospective, controlled, double-blind trial. Methods: A total 107 patients who underwent for unilateral SIT that had developed within previous...

In the present study, we investigated whether speech-related cognitive function and speech recognition ability under background noise in adults with hearing impairment are improved use of aids.Participants were recruited from ENT Department Eulji Hospital September 2008 to July 2009. The study group comprised 18 participants (mean age, 69.5±8.3 years) sensorineural loss who fitted aids, control 11 equivalent age 63.1±11.8 not aids. All assessed using computerized Korean visual verbal...

The early post-exposure treatment with All-trans retinoic acid (ATRA) can reduce hair cell loss and hearing deterioration in mice which permanent threshold shift has been induced.One of the mechanism by intense noise induces apoptosis cochlea cells is C-Jun NH(2)-terminal kinase (JNK) pathway. ATRA a potent inhibitor activator protein 1, transcription factor JNK In this study we evaluated that effect on noise-induced aimed to determine time window for effective ATRA.All were exposed white 3...

Prevalence of tinnitus has been reported to vary according the target population and definition tinnitus. To improve understanding tinnitus, authors used nation-wide health claim data study in entire South Korea.Retrospective big review.Analysis from National Health Information Database.Patients diagnosed with International Classification Diseases code 10th edition (ICD-10) requested receive Insurance at least once January 2006 December 2015.None.Epidemiologic data, association otologic...

This study compared the impact of spectral and temporal degradation on vocoded speech recognition between early-blind sighted subjects. The participants included 25 subjects (30.32 ± 4.88 years; male:female, 14:11) age- sex-matched Tests monosyllable in noise at various signal-to-noise ratios (−18 to −4 dB), matrix sentence-in-noise recognition, with different numbers channels (4, 8, 16, 32) envelope cutoff frequencies (50 vs 500 Hz). Cortical-evoked potentials (N2 P3b) were measured...

To classify the inner ear anomalies of cochlear implantees with profound sensorineural hearing loss.Retrospective case review.Tertiary referral center.For normative data structures, temporal bone computed tomography 60 patients (120 ears) normal bone-conduction threshold (< 15 dB) were used, and applied to 570 ears 285 implantees.Predesignated structures measured in images from implantation groups using a computer-based caliper that formed part picture archiving communication system.The...

Background and Objectives To compare the effectiveness of monitoring cisplatin-induced ototoxicity in adult patients using extended high-frequency pure-tone audiometry (EHF-PTA) or distortion-product otoacoustic emission (DP-OAE) to evaluate concurrence nephrotoxicity cisplatin-treated patients. Subjects Methods EHF-PTA was measured at frequencies 0.25, 0.5, 1, 2, 3, 4, 6, 8, 9, 11.2, 12.5, 14, 16, 18, 20 kHz DP-OAE 0.75, 1.5, 8 (n=10). Baseline evaluations were made immediately before...

To determine the prognostic factors for outcomes of treating acute subjective tinnitus with intratympanic dexamethasone (ITD).Retrospective chart review.Tertiary referral center.We enrolled 139 subjects who were treated ITD symptoms lasting 3 months or less. Overall, 114 completed questionnaires after treatment fully recovered within months. Audiograms performed in 43 patients.ITD tinnitus.Quantitative assessment severity by and changes hearing thresholds at all frequencies pure-tone...

Noise-induced hearing loss (NIHL) is the second most common cause of permanent impairment after age-related loss. NIHL influenced by environmental and genetic factors effects noise can be exacerbated administration ototoxic drugs or exposure to chemicals. The pathophysiology classified as either mechanical injury metabolic (or biochemical) injury. Exposure cochleae intense sounds has been found disrupt stereocilia on hair cells separating tip links depolymerize actin filaments, resulting in...

Objectives To evaluate that the cross-sectional area of air space in Eustachian tube (ET) on computed tomography (CT) images could be useful for predicting postoperative aeration middle ear. Methods The patient group consisted 80 patients (80 ears) with chronic otitis media and who underwent ear surgery from 2006-2007 were followed up more than 1 yr. control 100 ears 50 individuals normal tympanic membranes CT other causes (such as tinnitus or hearing loss). largest areas aerated ET measured...

To investigate whether tinnitus affects sound localization ability.Prospective controlled study.Tertiary referral center.Forty patients (mean age, 36.7 ± 14.3 yr; hearing threshold, <20 dB HL; group) and 40 controls 39.3 12.9 control group).We performed a test (SLT) with 7 speakers positioned in semicircle on the horizontal plane at distance of 1 m from subject, 30-degree intervals. Subjects were asked to identify stimulus-presenting speaker, through forced-choice procedure. The error score...

The Gaps-In-Noise (GIN) test is a measure to assess auditory temporal resolution, which the ability follow rapid changes in envelope of sound stimulus over time. We investigated whether unilateral tinnitus affects resolution by GIN performance.Hearing tests including were performed 120 ears 60 patients with who showed symmetric hearing within 20 dB HL difference up 8 kHz (tinnitus-affected ears, 14.6±11.2 HL; non-tinnitus 15.1±11.5 HL) and 30 subjects normal hearing. Comparisons made between...

To determine if unaided, non-linguistic psychoacoustic measures can be effective in evaluating cochlear implant (CI) candidacy.Prospective split-cohort study including predictor development subgroup and independent validation subgroup.Tertiary referral center.Fifteen subjects (28 ears) with hearing loss were recruited from patients visiting the University of Washington Medical Center for CI evaluation.Spectral-ripple discrimination (using a 13-dB modulation depth) temporal detection using...

Neuroglialchoristoma is a rare cerebral heterotopia typically involving extracranial midline structures of the head and neck, including nose, nasopharynx oral cavity. It rarely involves non-midline structures, such as middle ear, mastoid orbit. We report case 63-year-old woman with right-sided hearing loss aural fullness who was diagnosed neuroglialchoristoma ear mastoid. To our knowledge, this first on neuroglialchoristomawith massive tympanosclerosis. The presence combination supported...

This study evaluated the efficacy of personalized neuromodulation, where treatment modalities are chosen based on patient’s responses in a pilot trial. A total 71 patients with tinnitus were divided into two groups: group and randomized neuromodulation group. In (n = 35), repetitive transcranial magnetic stimulation (rTMS) direct-current (tDCS) assessed trial, responsive administered to 16 patients, while non-responders 19) randomly assigned rTMS, tDCS, or combined modalities. Patients 36)...

Noise-vocoded speech has long been used to investigate how acoustic cues affect understanding. Studies indicate that reducing the number of spectral channel bands diminishes intelligibility. Despite previous studies examining band effect using earlier event-related potential (ERP) components, such as P1, N1, and P2, a clear consensus or understanding remains elusive. Given our hypothesis degradation affects higher-order processing beyond mere perception, we aimed objectively measure...