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The Effect of a High-Frequency-hearing-Threshold Weighted Value on the Diagnosis of Occupational-Noise-Induced Deafness

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Journal of Biosciences and Medicines 2018年第12期6卷 88-99页

作者： Laijun Xue Yanhong Zhang Aichu Yang Department of Occupational Diseases Qingyuan Municipal Hospital for Occupational Disease Prevention and Treatment Qingyuan China Community Health Service Center of Kunlun Road in Karamay District Karamay China Institute of Occupational Health Surveillance Guangdong Province Hospital for Occupational Diseases Prevention and Treatment Guangdong Provincial Key Laboratory of Occupational Diseases Prevention and Treatment Guangzhou China

Objective: In order to provide a theoretical basis for the revision of the current diagnostic criteria for occupational noise-induced deafness (ONID), we evaluated the degree of ONID by analyzing different high-frequency-hearing- threshold-weighted values (HFTWVs). Methods: A retrospective study was conducted to evaluate the diagnosis of patients with ONID from January 2016 to January 2017 in Guangdong province, China. Based on 3 hearing tests (each interval between the tests was greater than 3 days), the minimum threshold value of each frequency was obtained using the 2007 edition’s diagnostic criteria for ONID. The speech frequency and the HFTWVs were analyzed based on age, noise exposure, and diagnostic classi-fication using SPSS21.0. Results: 168 patients in total were involved in this study, 154 males and 14 females, and the average age was 41.18 ± 6.07. The diagnosis rate was increased by the weighted value of the high frequencies and was more than the mean value of the pure speech frequency (MVPSF). The diagnosis rate for the weighted 4 kHz frequency level increased by 13.69% (χ2 = 9.880, P = 0.002), the weighted 6 kHz level increased by 15.47% (χ2 = 9.985, P = 0.002), and the weighted 4 kHz + 6 kHz level increased by 15.47% (χ2 = 9.985, P = 0.002). The differences were all statistically significant. The diagnostic rate of the different thresholds showed no obvious difference between the genders. The age groups were divided into less than or equal to 40 years old (group A) and 40 - 50 years old (group B). There were several groups with a high frequency: high frequency weighted 4 kHz ( group A χ2 = 3.380, P = 0.050;group B χ2 = 4.054, P = 0.032), high frequency weighted 6 kHz (group A χ2 = 6.362, P = 0.012;group B χ2 = 4.054, P = 0.032), weighted 4 kHz + 6 kHz (group A χ2 = 6.362 P = 0.012;B χ2 = 4.054, P = 0.032) than those of MVPSF in the same group on ONID diagnosis rate. The differences between the groups were statistically significant. There was no signif

关键词： Noise Occupational Noise Deafness Noise-Induced hearing Loss High Fre-quency hearing Threshold Weighted Value Diagnostic Rate

Potential and Limits of a High-Density Hemispherical Array of Loudspeakers for Spatial hearing and Auralization Research

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Journal of Applied Mathematics and Physics 2015年第2期3卷 240-246页

作者： William L. Martens Densil Cabrera Luis Miranda Daniel Jimenez The Faculty of Architecture Design and Planning The University of Sydney Sydney Australia

A hemispherical array of 196 independent loudspeakers has been constructed for laboratory research on spatial hearing, auralization, sound-field quality and spatial audio signal processing. The array of small loudspeakers is supported by a geodesic frame with a radius is 2.4 m. With this relatively high spatial density of sound sources, spatially quantized rendering of sound fields should be viable for a variety of applications, and this paper considers the potential and limits of this approach in relation to human spatial hearing capacities. The paper also considers the combined use of multiple loudspeakers for the rendering low-frequency components of sound sources in order to extend the low-frequency response of the system.

关键词： Loudspeaker Array Sound Field Control Auralization Spatial hearing

Sensori-Neural hearing Loss Client’s Performance with Receiver-In-Canal (RIC) hearing Aids

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International Journal of Otolaryngology and Head & Neck Surgery 2013年第2期2卷 68-73页

作者： S. G. R. Prakash Ravichandran Aparna S. B. Rathna Kumar Tamsekar Madhav Kaki Ashritha Kande Navyatha Ali Yavar Jung National Institute for the hearing Handicapped Department of Disability Affairs Ministry of Social Justice and Empowerment Goverment of India Mumbai India Ali Yavar Jung National Institute for the hearing Handicapped Southern Regional Centre Department of Disability Affairs Ministry of Social Justice and Empowerment Goverment of India Secunderabad India

Background: Individuals fitted with hearing aids complain of the unnatural sound quality of their voice, other internally generated sounds such as chewing and swallowing sounds “hollow”, “muffled” sounds. Receiver-In-Canal hearing aids are favored due to small size, discrete appearance and ability to minimize occlusion. Aim: To compare the performance of Receiver-In-Canal (RIC) to traditional ear tip (ET), ear moulds (EM) fittings using Functional gain measures. Method: Ten subjects with flat moderately severe sensori neural hearing loss participated in the study. Subjective unaided and aided measures for digital BTE hearing aids with ear tip, ear mould or Receiver-In-Canal for pure tones of 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz were obtained. Results and Discussion: Higher scores were obtained with Receiver-In-Canal fitting on Functional gain measures. No significant difference between all the three conditions was obtained at low frequencies especially at 500 Hz, as Receiver-In-Canal hearing aids attenuate low frequency sounds automatically when the ear is left open (up to 30 dB less amplification at 500 Hz) especially for hearing in noisy situations. Conclusion: The results suggest that Receiver-In-Canal fittings are an effective means of overcoming the major barriers to the acceptance of amplification and further suggest the clinical importance of subjective measures in measuring aided benefit of open-fit devices in the rehabilitation of person’s with moderately severe to severe SN hearing loss.

关键词： Sensori Neural hearing Loss RIC hearing Aids Functional Gain Measures

Risk of hearing Loss Injury Caused by Multiple Flash Bangs on a Crowd

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American Journal of Operations Research 2018年第4期8卷 239-265页

作者： Hongyun Wang Wesley A. Burgei Hong Zhou Department of Applied Mathematics and Statistics University of California Santa Cruz CA USA US Department of Defense Joint Non-Lethal Weapons Directorate Quantico VA USA Department of Applied Mathematics Naval Postgraduate School Monterey CA USA

A flash bang is a non-lethal explosive device that delivers intensely loud bangs and bright lights to suppress potentially dangerous targets. It is usually used in crowd control, hostage rescue and numerous other missions. We construct a model for assessing quantitatively the risk of hearing loss injury caused by multiple flash bangs. The model provides a computational framework for incorporating the effects of the key factors defining the situation and for testing various sub-models for these factors. The proposed model includes 1) uncertainty in the burst point of flash bang mortar, 2) randomness in the dispersion of multiple submunitions after the flash bang mortar burst, 3) decay of acoustic impulse from a single submunition to an individual subject along the ground surface, 4) the effective combined sound exposure level on an individual subject caused by multiple submunitions at various distances from the subject, and 5) randomness in the spatial distribution of subjects in the crowd. With the mathematical model formulated, we seek to characterize the overall effect of flash bang mortar in the form of an effective injury area. We carry out simulations to study the effects of uncertainty and randomness on the risk of hearing loss injury of the crowd. The proposed framework serves as a starting point for a comprehensive assessment of hearing loss injury risk, taking into consideration all realistic and relevant features of flash bang mortar. It also provides a platform for testing and updating component models.

关键词： Risk of Significant hearing Loss Mathematical Framework for Assessing Injury Risk Effective Injury Area Decay of Acoustic Impulse along Ground Surface Dose-Response Relation Fluctuations in Actual Injury Numbers

Childhood hearing Impairment, Gender, and Trait Neuroticism as Independent Predictors of the Occurrence of hearing Problems in Adulthood

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Health 2019年第1期11卷 81-90页

作者： Helen Cheng Adrian Furnham Research Department of Clinical Educational and Health Psychology University College London London UK ESRC Centre for Learning and Life Chances in Knowledge Economies and Societies Institute of Education University College London London UK Norwegian Business School Oslo Norway

This study explored psychological, biomedical, and social factors in childhood and adulthood associated with the occurrence of self-reported hearing problems in adulthood. In total, 4828 participants with complete data on parental social class at birth, childhood hearing impairment measured at age 7 years and cognitive ability accessed at age 11 years, educational qualifications obtained at age 33 years, the Big-Five-Factor personality traits measured at age 50 years, current occupational levels and self-reported hearing problems at age 54 years were included in the study. Logistic regression analysis showed that among all the factors examined childhood hearing impairment and trait neuroticism as well as gender were the significant and independent predictors of hearing problems in adulthood.

关键词： hearing Problems in Childhood and Adulthood Childhood Intelligence Personality Traits Longitudinal

Risk of hearing Loss Caused by Multiple Acoustic Impulses in the Framework of Biovariability

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Health 2018年第5期10卷 604-628页

We consider the hearing loss injury among subjects in a crowd with a wide spectrum of individual intrinsic injury probabilities due to biovariability. For multiple acoustic impulses, the observed injury risk of a crowd vs the effective combined dose follows the logistic dose-response relation. The injury risk of a crowd is the average fraction of injured. The injury risk was measured in experiments as follows: each subject is individually exposed to a sequence of acoustic impulses of a given intensity and the injury is recorded;results of multiple individual subjects were assembled into data sets to mimic the response of a crowd. The effective combined dose was adjusted by varying the number of impulses in the sequence. The most prominent feature observed in experiments is that the injury risk of the crowd caused by multiple impulses is significantly less than the value predicted based on assumption that all impulses act independently in causing injury and all subjects in the crowd are statistically identical. Previously, in the case where all subjects are statistically identical (i.e., no biovariability), we interpreted the observed injury risk caused by multiple impulses in terms of the immunity effects of preceding impulses on subsequent impulses. In this study, we focus on the case where all sound exposure events act independently in causing injury regardless of whether one is preceded by another (i.e., no immunity effect). Instead, we explore the possibility of interpreting the observed logistic dose-response relation in the framework of biovariability of the crowd. Here biovariability means that subjects in the crowd have their own individual injury probabilities. That is, some subjects are biologically less or more susceptible to hearing loss injury than others. We derive analytically the distribution of individual injury probability that produces the observed logistic dose-response relation. For several parameter values, we prove that the derived distributio

关键词： Risk of Significant hearing Loss Injury Dose-Response Relation for Multiple Acoustic Impulses Biovariability A Crowd With Heterogeneous Individual Injury Probabilities

Conductive hearing Loss with Present Acoustic Reflex: A Case Report

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Open Journal of Clinical Diagnostics 2014年第3期4卷 177-181页

作者： Takashi Sakamoto Shu Kikuta Shinji Urata Kazuo Yasuhara Yayoi S. Kikkawa Tatsuya Yamasoba Department of Otolaryngology and Head and Neck Surgery Graduate School of Medicine Faculty of Medicine University of Tokyo Tokyo Japan

Acoustic reflex is a sensitive indicator of middle ear lesions when the tympanic membrane is in-tact and tympanometry is normal. Acoustic reflex is not usually observed in conductive hearing loss caused by disruption of the ossicular chain including ossicular discontinuity and fixation. Ossicular disruption can show at least partially intact acoustic reflex under a certain condition. Moreover, ossicular discontinuity with a nearly intact acoustic reflex is quite rare and there have been few reports published to date. We here present a rare case of conductive hearing loss with a nearly intact acoustic reflex, and the patient was surgically confirmed to have ossicular discontinuity.

关键词： Acoustic Reflex Conductive hearing Loss Ossicular Discontinuity

中文简版Spatial hearing Questionnaire的信效度分析

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中华耳科学杂志 2018年第6期16卷 827-834页

作者：张娟唐艳天朱家砚吴薇郝鹏鹏周沫付欣刘佳星李欢樊知桐何晓霖王兴王宁宇首都医科大学附属北京朝阳医院耳鼻咽喉头颈外科北京100020 湖北中医药大学信息工程学院湖北430065 北京中医药大学东直门医院耳鼻咽喉科北京100007

目的空间听觉指在复杂声环境下,患者能够理解言语和识别不同方位声音的能力,可以采用Spatial hearing Questionnaire评估。本研究在正常听力受试者及耳聋受试者中进行中文简版Spatial hearing Questionnaire信效度分析。方法首先对Spati... 详细信息

目的空间听觉指在复杂声环境下,患者能够理解言语和识别不同方位声音的能力,可以采用Spatial hearing Questionnaire评估。本研究在正常听力受试者及耳聋受试者中进行中文简版Spatial hearing Questionnaire信效度分析。方法首先对Spatial hearing Questionnaire进行汉化形成C-SHQ12。纳入50例正常听力受试者及57例耳聋受试者进行研究,采用内部一致性检验评价量表的信度,采用探索性因子分析评价量表的结构效度。采用t检验分析正常听力受试者与耳聋受试者C-SHQ12得分的差别,采用pearson相关分析SHQ量表得分与实验室声源定位测试的相关性。采用配对t检验对人工耳蜗植入术前和术后的C-SHQ12得分进行比较。结果 Cronbach’sα系数为0.98,说明量表具有良好的内部一致性信度。采用探索性因子分析提取了2个公因子,分别是声源定位和噪声环境下言语能力,累计贡献率为94.8%。正常听力受试者C-SHQ12得分为87.74±7.99,耳聋受试者得分为52.80±21.76,P=2.2×10-16<0.01,两者差异有显著统计学意义。C-SHQ12量表得分与实验室声源定位得分有很好的相关性,P=2.858×10-6<0.01。人工耳蜗植入术前和术后的C-SHQ12得分有显著差异。结论 C-SHQ12量表信效度很高,可用于耳聋人群的空间听觉能力评估。

关键词：声源定位 Spatial hearing Questionnaire 信效度分析耳聋

Grhl2 is essential for otic development and hearing by promoting claudin b and epcam expression

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Grhl2 is essential for otic development and hearing by promo...