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허승덕,김리석,정동근,최아현,고도홍,김현기,Heo, Seung-Deok,Kim, Lee-Suk,Jung, Dong-Keun,Choi, Ah-Hyun,Ko, Do-Heung,Kim, Hyun-Gi 한국음성학회 2005 음성과학 Vol.12 No.4
The cochlear implantation(CI) as an useful tool for aural rehabilitation in bilateral severe to profound hearing impairment. However, CI prefer to usually one ear in spite of bilateral hearing impaired. because of the various characteristics of hearing loss, the hearing conservation for the future possibility, and socioeconomic condition of hearing impaired person and their families. The unilateral CI has limitations such as a directional loss, a difficult speech understanding in noise and a neural plasticity. These limitations will be overcome by hearing aid(HA) which is familiar with hearing impairer. but HA fitting for bimodal-binaural hearing are difficult because the difference output characteristic of HA and CI. This study will be confirm realities of use of HA in unilateral cochlear implantee. For this goal, 25(m:f=10:15) child participated who are used to HA for 1 to 17 months. We had telephone interviews with their mother about use of HA, change of auditory performance and own voice. As the results, hearing threshold levels of unimplanted ear, the use of a appropriate HA, implanted and aided hearing threshold level(HTL) are must be considered for successful biomodal-binaural hearing. Especially, implanted and aided HTL should be very useful parameter for a prediction of HA effect and a criterion of selection for bilateral cochlear implantation.
허승덕(Seung-Deok Heo),이재명(Jae-Myeong Lee),박지상(Ji-Sang Park),최아현(Ah-Hyun Choi),강명구(Myung-Koo Kang) 한국언어청각임상학회 2008 Communication Sciences and Disorders Vol.13 No.3
배경 및 목적: 이 연구는 사회경제적 이득을 목적으로 방문한 피 검자의 순음청력검사(pure tone audiometry: PTA, 이하 PTA) 반응 양상, 어음청력검사(speech audiometry: SA, 이하 SA) 그리고 청성뇌간유발반응(auditory brainstem response: ABR, 이하 ABR) 결과들을 이용하여 사청 비율과 과대 난청 정도를 예측하고자 수행되었다. 방법: 2006년 6월 부터 2007년 9월까지 청각학적 진단을 위해 방문하였던 18.4세부터 86.9세 사이의 54(남 48, 여 6)명 의 의무기록을 후향적으로 분석하였다. 이들의 반응 양상을 기준으로 사청군과 대조군으로 분류하 고 두 군간 차이를 통계학적으로 검증하였다. 결과: 하강법과 상승법 반응 역치의 차이는 1㎑에서 사청군이 24.77㏈, 대조군이 -1.11㏈의 유의한 차이를 보였다(p < .001). 검사간 차이로 반응 역치 평균 (pure tone averages: PTAs, 이하 PTAs)인 2 PTAs 와 어음청취역치(speech reception threshold: SRT, 이하 SRT; p < .001), ABR 역치와 high 3 PTAs (p = .002), ABR 역치와 SRT (p < .001)는 모 두 통계학적으로 유의하였다. 논의 및 결론: 이 연구에서 확인한 사청비율은 84.48%였으며, 이들의 과대 난청 정도는 상승법 반응 역치를 기준으로 34.48(±22.79)㏈이었다. Background & Objectives: This study was performed to investigate the rate of malingering deafness and to predict the degree of exaggerated-hearing loss using pattern of response of pure tone audiometry(PTA), speech audiometry(SA) and auditory brainstem response (ABR) in subjects with a purpose of socioeconomic benefit. Methods: We reviewed the medical records of 54 subjects. The subjects were divided into the malingering group and the control group in accordance with pattern of response. These results were analyzed statistically. Results: The responded-thresholds of ascending and descending methods in 1 kHz between the malingering group and the control group were significantly different. The differences between 2 PTAs(pure tone averages between 0.5 and 1kHz) and SRT(speech reception threshold) (P < .001), ABR threshold and high 3 PTAs(pure tone averages between 0.5, 1 and 2kHz) (P = .002), ABR threshold and SRT (P < .001) were statistically significant. Discussion & Conclusion: It was concluded that the rate of malingering deafness was 84.48%, and the degree of exaggerated-hearing loss was 34.48dB respondedthreshold of ascending method.
허승덕(Seung-Deok Heo),박정홍(Jung-Hong Park),장윤석(Yoon-Seok Jang),최아현(Ah-Hyun Choi),김리석(Lee-Suk Kim),강명구(Myung-Koo Kang) 한국언어치료학회 2007 言語治療硏究 Vol.16 No.3
Background & Objectives: Auditory brainstem response(ABR) is measured hearing function using averaging technique. Subjects relaxation is important for collection of stable potentials. If the subject senses a tension or makes a body motion by intention during the test, the results would show poor reproducibility. The aim of this study to evaluate whether the reproducibility of ABR wave V measured by averaging technique detects pseduohyoacusis. Participants & Methods: The 13-subject(19-ear) were participated, as a experimental group. All subjects had mismatch between ascending and descending responded threshold in pure tone audiometry(PTA) and had unwanted activity during ABR test. Participants to the measurement of PTA and ABR were classified into control group(n=9; 13 ears). For the analysis of reproducibility, ABR was recorded in each of 100, 300, 500, 700, 900, 1,024(3-time) of average in same intensity of click. The average of responded threshold level at frequencies of 1, 2, 3 kHz(high 3 PTAs) on ascending/descending PTA and ABR threshold was compared in experimental group. Between both groups, the changes of latency and amplitude of ABR wave Ⅴ were compared. Results & Conclusion: In experimental group, the gap between high 3 PTAs in the acending and descending method and ABR thresholds was 34.2±13.6㏈ and 53±18.4㏈, respectively. The gap of maximum and minimum of latency and amplitude was observed from 0.32 to 7.4(3.2±1.76)㎳, from 0.2 to 2.47(0.815±0.563)㎶ in experimental group, from 0.08 to 0.4(0.22±0.086)㎳, from 0 to 0.26(0.142±0.064)㎶ in control group. There was a significant difference between both groups(latency; p=0.000, amplituce; p=0.004). Our results show that it is useful tool for differentiation of malingering deafness.