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아동의 중이 검사 주파수(226, 678, 1,000 Hz) 영향 분석: 일반 및 특수학교대상 아동을 중심으로
김춘혁,김건구,이승완,김진숙 한국청각언어재활학회 2017 Audiology and Speech Research Vol.13 No.1
Purpose: This study was to determine effects of three stimulus frequencies on tympanometry and to compare with Distortion Produtct Otoacoustic Emission (DPOAE) for regular and special school-age children. Methods: A total number of 182 school-age children, 152 recruited from regular elementary school and 30 from special school, participated. All participants were evaluated by tympanogram and DPOAE. Tympanograms were tested by 226, 678, and 1,000 Hz and analyzed with static compliance (SC) and earcanal volume (EV). Results: Depending on three stimulus frequencies, SCs and EVs were 0.49, 1.45, and 1.26 ml and 0.92, 2.98, 4.52 cm3 in regular school-age group and 0.56, 1.58, 1.29 ml and 0.98, 3.0, 4.48 cm3 in special school-age group. There were statistical significant differences among three frequencies but no difference between regular and special school-age groups for both SCs and EVs (p < 0.05). The pass and fail rate of DPOAE was 87.2% and 12.8% for regular school-age group and 57.6% and 42.4% for special school-age group, showing a statistical significant difference between groups (p < 0.05). Agreement rate between tympanograms and DPOAE results was the highest in 678 Hz. Conclusion: While there was no difference in middle ear status between groups, DPOAE results referred that the inner ear status could be poor for the special school-age group. Therefore, more interests of hearing status should be aroused to the special school-age children. Additionally, the 678 Hz seems to be more useful for screening school-age children. Further, more data with pure tone examination be supplemented for the certain conclusion.
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김춘혁,이승완,진인기,김진숙 대한청각학회 2018 Journal of Audiology & Otology Vol.22 No.2
Although Ling 6 sounds are often used in the rehabilitationprocess, its acoustic features have not been fully analyzed and represented in cortical responses. Current study was aimed to analyze acoustic features according to gender andemotional statuses of core vowels of Ling 6 sounds, /u/, /a/, and /i/. Cortical auditoryevoked potentials (CAEPs) were also observed in those vowels. Subjects and Methods:Vowel sounds /u/, /a/, and /i/ out of Ling 6 sounds representing low, middle and high frequencieswere recorded from normal 20 young adults. The participants watched relevant videosfor 4-5 minutes in order for them to sympathize emotions with anger (A), happiness (H),and sadness (S) before producing vowels. And without any emotional salience, neutrally productionwas performed. The recording was extracted for 500 ms to select pure vowel portionof production. For analysis of CAEP, the latencies and amplitudes of P1, N1, P2, N2, N1-P2were analyzed. Results: Intensities of /u/, /a/, and /i/ were 61.47, 63.38, and 60.55 dB. Theintensities of neutral (N), H, A, S were 60.60, 65.43, 64.21, and 55.75 dB for vowel /u/, vowel/a/ were 61.80, 68.98, 66.50, and 56.23 dB, and vowel /i/ were 59.34, 64.90, 61.90, and56.05 dB. The statistical significances for vowel and emotion were found but not for gender. The fundamental frequency (F0) of vowels for N, A, H, and S were 168.04, 174.93, 182.72,and 149.76 Hz and the first formant were 743.75, 815.59, 823.32, and 667.62 Hz. The statisticalsignificance of F0 was found by vowel, emotion, and gender. The latencies and amplitudesof CAEP components did not show any statistical significance according to vowel. Conclusions: Ling 6 sounds should be produced consistently in the rehabilitation processfor considering their difference of intensities and frequencies according to speaker’s emotionsand gender. The vowels seemed to be interpreted as tonal stimuli for CAEP components ofthis study with similar acoustic features among them. Careful selection of materials is necessaryto observe meaningful conclusion of CAEP measurement with vowel stimuli.
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김동창,신진배,김춘혁,박혜진,김진숙 한국청각언어재활학회 2015 Audiology and Speech Research Vol.11 No.2
This paper reviewed the tinnitus associations in the U.S.A., Australia, United Kingdom, European Federation, and one tinnitus research initiative. The American Tinnitus Association (ATA), which was the first tinnitus association in the world established in 1971, has pursued to find a cure for tinnitus and funded vital tinnitus research. The ATA provides informational brochures. The British Tinnitus Association (BTA) aims to support tinnitus patients and to seek effective management of tinnitus. The BTA offers several education programs for clinicians dealing with tinnitus patients in addition to fund tinnitus research. Moreover, the BTA offers direct counsel to tinnitus patients on the phone, and publishes twenty one of informal leaflets. In Australia, two of four tinnitus associations were reviewed; The Australian Tinnitus Association (ATA, Australia TA) and Tinnitus South Association (Tinnitus SA). The Australia TA provides the information about tinnitus, supports tinnitus patients, publishes a tinnitus magazine, and informs people tinnitus treatments through their home page. The Tinnitus SA was established by support of government of South Australia on the purpose of informing people about tinnitus. The Tinnitus SA provides an on-line tinnitus questionnaire, and off-line counselling for patients. The European Federation of Tinnitus Association (EUTI) was recently formed by tinnitus associations from 18 countries within Europe in order to cooperate to help patients. The Tinnitus Research Initiative (TRI) has been established by some research institutes in several countries in order to perform cooperative research and share the results. However, in Korea, there is no tinnitus association except one formed by Korean veteran, which has no information about tinnitus. Considering increasing number of tinnitus patients in Korea, the tinnitus association for helping patients and leading research should be formed in the near future.
KCI
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