• Journal of Biomedical Engineering Research
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• v.34 no.1
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• pp.8-13
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• 2013

Persons with sensorineural hearing impairment have troubles in hearing at noisy environments because of their deteriorated hearing levels and low-spectral resolution of the auditory system and therefore, they use hearing aids to compensate weakened hearing abilities. Various algorithms for hearing loss compensation and environmental noise reduction have been implemented in the hearing aid; however, the performance of these algorithms vary in accordance with external sound situations and therefore, it is important to tune the operation of the hearing aid appropriately in accordance with a wide variety of sound situations. In this study, a sound classification algorithm that can be applied to the hearing aid was suggested. The proposed algorithm can classify the different types of speech situations into four categories: 1) speech-only, 2) noise-only, 3) speech-in-noise, and 4) music-only. The proposed classification algorithm consists of two sub-parts: a feature extractor and a speech situation classifier. The former extracts seven characteristic features - short time energy and zero crossing rate in the time domain; spectral centroid, spectral flux and spectral roll-off in the frequency domain; mel frequency cepstral coefficients and power values of mel bands - from the recent input signals of two microphones, and the latter classifies the current speech situation. The experimental results showed that the proposed algorithm could classify the kinds of speech situations with an accuracy of over 94.4%. Based on these results, we believe that the proposed algorithm can be applied to the hearing aid to improve speech intelligibility in noisy environments.

• Clinical and Experimental Pediatrics
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• v.46 no.4
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• pp.382-384
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• 2003

Townes-Brocks syndrome is an uncommon autosomal dominant condition first described by Townes and Brocks in 1972. We experienced a newborn female who presented with clinical findings of Townes-Brocks syndrome in an otherwise unaffected family. The patient showed the full spectrum of anomalies including anterior placed anus, triphalangeal thumb, preaxial polydactyly, pre-auricular tags, microtia without opening, sensorineural hearing loss and unilateral renal agenesis.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1987.05a
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• pp.12.1-12
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• 1987

1979년 McCabe가 자가면역성 감음신경성 난청이라는 용어를 처음으로 사용한 이래. 많은 학자가 면역성질환에서 감음신경성 난청이 동반될 수 있다는 보고가 있어 왔다. 자가면역성 감음신경성 난청은 보통 양측성, 비대칭적으로 점진적인 난청이 수주 혹은 수개월에 걸쳐서 진행되는 것이 특징이다. 그간 내이의 면역학적인 측면에 관한 연구가 진행되어 왔던 바, 일반적인 치료에 듣지 않으며 면역억제요법으로 효과를 볼 수 있는 감음신경성 난청의 범주를 결정할 수 있었으며, 이는 치료가 가능한 감음신경성 난청이라는 점에서 이비인후과 영역에서 관심을 가져야 할 필요가 있다고 하겠다. 저자들은 최근 자가면역성 질환인 전신성 홍반성 낭창을 가진 27세 여자환자에서 감음신경성 난청을 관찰할 수 있었으며, 면역억제요법으로 청력의 호전을 경험하였기에 문헌적 고찰과 함께 보고하는 바이다.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.14 no.2
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• pp.125-133
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• 2001

Herpes Zoster Oticus is a reactivation of latent varicella-zoster infection associated otalgia, facial nerve palsy, sensorineural hearing loss and vertigo. Facial nerve palsy is rapid in onset, usually severe degree, and poor is prognosis. And pain in the form of acute neuritis and postherpetic neuralgia is by far the most frequent and most debilitating complication of Herpes Zoster. The pain of Herpes Zoster may severe, but it is usually transitory. Some patients, with the elderly at particular risk, go on to develop postherpetic neuralgia. In the two cases, pain (especially postherpetic neuralgia) which is often severe and, unfortunately, refractory to most forms of treatment was reduced using herbal medicine and acupuncture but facial nerve palsy was not improved.

• Investigative Magnetic Resonance Imaging
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• v.22 no.4
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• pp.249-253
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• 2018

Superficial siderosis of the central nervous system (CNS) is a progressive and debilitating neurological disease manifesting sensorineural hearing loss, cerebellar ataxia, and pyramidal tract signs. Chronic extravasation of blood into the subarachnoid space results in the accumulation of hemoglobin derivate in the subpial layer of the CNS, which is toxic to the neural tissues. Craniopharyngioma is a benign third ventricle tumor, which rarely presents with tumor bleeding. We report a rare case of superficial siderosis associated with craniopharyngioma with intratumoral hemorrhage in a patient with no history of prior trauma or CNS surgery.

• Journal of Veterinary Clinics
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• v.35 no.3
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• pp.103-106
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• 2018

A 12-year-old castrated male Shih Tzu presented with suspected hearing loss. The patient had no history of head trauma or exposure to ototoxic drugs. The results of neurologic and physical examinations were normal. An otoscopic examination showed that both the tympanic membranes and the external ear canals had a normal appearance. However, the results of brainstem auditory evoked response tests confirmed sensorineural deafness in the right ear and indicated conduction disturbances and brainstem abnormalities in the left ear. Magnetic resonance imaging was performed to confirm the causes of the conduction disturbances and brainstem abnormalities. Inflammatory changes in the left middle ear were highly suspected to be responsible for the findings in the left ear. The results of these examinations confirmed complete hearing loss in the right ear and indicated otitis media in the left ear, which could have been the cause of the conduction disturbances.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.5 no.1
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• pp.41-46
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• 2011

A sensorineural hearing loss(SNHL) occurs when the cochlea in the inner has functional problem. The region in the cochlea with no(or very few) functioning inner hair cells or neurons called 'dead regions'. Amplification using hearing aid over a frequency range corresponding to a dead region may not a beneficial. In this paper, we compared speech recognition with different location of dead region and gain and searched effective gain for hearing aid with dead region. In order to experiment, eight people who has normal hearing ware tested, and we used white noise and babble noise(SNR=0 dB). we divided by three conditions, low, mid and high frequency dead region. In addition, the gains in dead region ware 14.5 dB, 11.5dB and 6 dB gain. There ware different results by location of dead region. The result of WRS and preference in mid-frequency dead region and high-frequency dead region ware higher than them in low-frequency dead region. When we compared as gains, the score of WRS with lower gain was higher than 14.5 dB gain, and the preference was lower as higher gain.

• Journal of Acupuncture Research
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• v.19 no.4
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• pp.101-111
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• 2002

Objective : In order to review the studies related to the treatment of children by aupuncture or mo ibustion Methods : We referred to a Pubmed site by using searching word of "the terms of pediatrics(for e ample child children infant baby pediatrics etc and acupuncture" Results : 40 journals with 63 papers were searched 50 papers were reported Conclusion : 1 We found 63 articles in 40 journals which were Pediatrics J Tradit chin Med Am Fam Physician Anaesthesia linical research was the most of these studies and the pattern of the rest were review or clinical conferences 3 We analy ed articles and found many articles of nocturnal enuresis asthma bronchitis postoperative vomitting constipation etc 4 The result of clinical studies represented the significant cure rate owever the cases of sensorineural hearing loss vomitting after tonsillectomy e ercise induced asthma were not 5 It was ta en to research for laser acupressure bloodletting ear acupuncture etc as well as body acupuncture in the area of pediatric acupuncture treatment as alternative therapy which was composed of the lower stimulation than adult.

• The Korean Journal of Pain
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• v.11 no.2
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• pp.346-349
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• 1998

The technique of the stellate ganglion block is widely used as it is relatively simple and safe. But it can cause severe complications because there are major blood vessels and nerves around the stellate ganglion. We practiced CPR because of the respiratory failure caused by severe hematoma in the neck following the stellate ganglion block. A 46-year-old male patient admitted to ENT department because of the both sudden sensorineural hearing loss that happened after URI. He was referred to Pain Clinic for further evaluation and treatment. We decided to block the stellate ganglion. We injected 6ml of 0.5% mepivacaine on both sides of the stellate ganglion. There were no blood aspiration and abnormal vital signs during the 30 minute observation, either. Three hours after he went to the private room, he had pain and edema in his neck, but no respiratory defficulty. But later, respiratory failure was suddenly followed. So we practiced CPR. We confirmed severe hematomas in the neck through CT scanning. Hematomas is removed and the ruptured blood vessels which is supposed to be muscular branch of vertebral artery is ligated under general anesthesia. The patient was discharged from hospital after the treatment of pneumonia and duodenal ulcer as complications. We recommand you to compress the block site more than five minutes and not to prick with the needle several times at one point to prevent the formation of hematomas.

• Neonatal Medicine
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• v.15 no.2
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• pp.200-206
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• 2008

Human chromosome 9 is characterized by a high degree of morphologic heteromorphisms, including variation in the size of the heterochromatin. We present a case of a de novo short arm addition of chromosome 9, [46, XY, add(9)(p13)], associated with multiple anomalies, including trigonocephaly, upward slant of the palpebral fissures, patent ductus arteriosus, pulmonary hypertension, hypertrophic cardiomyopathy, umbilical hernia, ambiguous genitalia, and sensorineural hearing and visual loss. This mutation affects the pericentric region of the heterochromatin. This patient exhibited a clinically important breakpoint of the heterochromatic region of chromosome 9 short arm and the associated anomalies.