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김선금,노경진,박아영,최병일,홍성아,이재희,손은진 대한이비인후과학회 2017 대한이비인후과학회지 두경부외과학 Vol.60 No.12
Background and Objectives The acceptable noise level (ANL) test measures the maximum noise level that a subject can tolerate while following speech. Given the limited investigation of ANL across different languages, this study aimed to compare ANLs using both Korean semantic speech and non-semantic speech signals (reversed Korean speech and international speech test signal, ISTS) in normal-hearing subjects. Subjects and Method Twenty-five subjects with normal hearing (9 males, 16 females, with the mean age of 28.5±3.15 years) were included in the study. ANLs were obtained using three speech materials (Korean speech, reversed Korean speech, and ISTS) as the target speech material and an eight-talker babble noise as the competing background noise. Results Generally, the inter-subject variability was large. The ANLs did not differ statistically regardless of the type of speech signal. Conclusion The ANLs seemed to be unaffected by the meaningfulness or semantic contents of the target speech, at least in normal-hearing adults. Thus, non-meaningful speech signals or non-semantic material can be considered as the target signal for the implementation of ANL test. Korean J Otorhinolaryngol-Head Neck Surg 2017;60(12):614-20
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해양관광 활성화 요인에 관한 연구 신안군 해양관광지를 중심으로
김선금(Kim, Seon-Geum) 한국해양관광학회 2019 해양관광학연구 Vol.12 No.1
The study mainly focused on analysing the impact of the participant s motivation on tourist satisfaction and behavior intention by marine tourism. Marine tourism refers to ocean-related tourism activities away from daily life for tourism purposes. In this study, a theoretical study was conducted on the activation factors of marine tourism and an interview survey was conducted on tourists visiting a marine site in Shinan-gun. This study analyzed the impact towards Shinan-gun in the perspective of marine tourism.The effect of visitor’s satisfaction, attraction diversity, and the contribution of visitors were analysed on this study.Three hypotheses were derived and verified for the verification of the main assumption. Firstly, an analysis of the impact of participation by visitors to the marine tourist resort on tourism satisfaction by demographics showed that tourism motivation has a positive impact on tourism satisfaction. Secondly, it has been shown that the motivation for visitors to the marine tourist resort has a statistically significant influence on the behavior of tourists. Thirdly, the effect of tourism satisfaction on the behavior of tourists has shown that tourism drivers have a significant positive impact on their behavior. However, the discussion can be conducted to find marketing strategies and ways to develop new marine tourism resources to satisfy future visitors by looking at what causes visitors to participate in the marine tourism zone and how factors in the participation affect the satisfaction and behaviour of tourists.
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Limitation of Conventional Audiometry in Identifying Hidden Hearing Loss in Acute Noise Exposure
남기성,김주영,홍성아,김선금,손은진 연세대학교의과대학 2021 Yonsei medical journal Vol.62 No.7
Purpose: The concept of hidden hearing loss can explain the discrepancy between a listener’s perception of hearing ability andhearing evaluation using pure tone audiograms. This study investigated the utility of the suprathreshold auditory brainstem response(ABR) for the evaluation of hidden hearing loss in noise-exposed ear with normal audiograms. Materials and Methods: A total of 15 patients (24 ears) with normal auditory thresholds and normal distortion product otoacousticemissions were included in a retrospective analysis of medical records of 80 patients presenting with histories of acute noise exposure. The control group included 12 subjects (24 ears) with normal audiograms and no history of noise exposure. Pure tone audiometryand suprathreshold ABR testing at 90 dB peSPL were performed. The amplitudes and latencies of ABR waves I and Vwere compared between the noise-exposed and control groups. Results: We found no significant difference in the wave I or V amplitude, or the wave I/V ratio, between the two groups. The latenciesof ABR wave I, V, and I–V interpeak interval were compared, and no significant intergroup difference was observed. Conclusion: The results suggest that either hidden hearing loss may not be significant in this cohort of patients with acute noise exposurehistory, or the possible damage by noise exposure is not reflected in the ABRs. Further studies are needed to inquire aboutthe role of ABR in identification of hidden hearing loss.
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withAssessment of Attentional Demand in Patients with Dizziness Using Dual Task Test
이은정,박아영,최병일,김지형,홍성아,김선금,손은진 대한이비인후과학회 2017 대한이비인후과학회지 두경부외과학 Vol.60 No.5
Background and Objectives Even patients with compensated peripheral vestibular dysfunction may report a sense of disequilibrium during daily activities, which often fail conventional vestibular function tests as attentional demand required for postural control may increase in these patients. The study aims to assess the feasibility of dual task test using concurrent cognitive tasks in a modified clinical test of sensory interaction on balance (mCTSIB) to measure increased attentional demand for posture control. Subjects and Method Nineteen patients suspected with chronic dizziness were recruited by history reviews and physical examinations. Data for center of pressure (COP) variability and mean velocity during mCTSIB on a force long plate were analyzed, and time taken to react to the auditory stimuli were used to measure the attentional demand required for adequate postural control during platform perturbation. Results The mean COP range and velocity during mCTSIB were comparable between single and dual task conditions in patients with dizziness. Reaction time (RT) to auditory stimulus of 1 kHz pure tone in patients with chronic dizziness was also comparable to normal subjects. Interestingly, there was a tendency for increased RT in patients with documented caloric weakness, suggesting that attentional demand is increased in these patients. Conclusion RT of dual task tests using auditory stimuli during mCTSIB may provide additional information about increased attentional demand for postural control in patients with vestibular dysfunction. Korean J Otorhinolaryngol-Head Neck Surg 2017;60(5):215-21
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