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目的应用“dBHL”作为计量单位的听阈测定,研究听阈与刺激声频率和年龄之间的关系。方法研究对象全为男性(女性只做检查,末列统计理由见后)。测试听阈包含全频程(0.5-16kHz中7个频道,-WFCAT)。耳科正常耳134个,年龄从18-70岁分成四个年龄阶段进行测试。另随机测定了60个70岁以上老人的“WFCAT”。对老年聋30耳,噪耳聋30耳与耳鸣25耳3组病人测定了8-16kHz扩展高频听阈测试(“EHFAT”)。结果本实验结果在各年龄段由8k-16kHz频率声测得的听阈均值和标准差中发现:听阈随年龄增长而升高;在所有年龄组中听阈随着一定的频率的特性作特异地提高;在听力计最大输出强度,从低频率到较高频率,随年龄的增加,给声信号的检出率逐渐下降。在受试者之间听阈变化的差异也因频率和年龄的不同而表现不同的特征,11-16kHz之间阈值变化的差异最显著(特别见于一些40岁左右的人)。日常听力级正常人的“WFCAT”与老年聋、噪声聋与原发性耳鸣同年龄阶病人“WFCAT”对比,显示明显差异。“原发性耳鸣”的EHFAT检测中可能发现已存在高频耳聋。结论本文显示人类耳蜗系统的退行性变始于中年,随着增龄逐渐加重。笔者实验中发现高频率的听敏度与年龄和频率数值呈反比。EHFAT和听阈标准差(表现dBHL)随着测试频率与年龄的增加而递增。因此在评价早期高频听力损害时,应考虑年龄和频率因素的影响。通过扩展频率听力检测可以早期发现一些听觉系统潜在的病理变化,同时及早鉴定听觉功能缺陷。从而及早发现、诊断与治疗有关疾病。同时听阈可作为一项明确的指标动态的观察有关聋病治疗与康复的全过程。
Objective To study the relationship between hearing threshold and stimulus frequency and age by using “dBHL” as the measurement unit of hearing threshold. Methods All subjects were male (women only check, last column for statistical reasons see later). The test thresholds include full-range (7 channels in 0.5-16 kHz, -WFCAT). There are 134 normal ears in the otology, and the age is from 18 to 70 years old and is divided into four age groups for testing. In addition, 60 WFCATs were randomly measured in 60 elderly people over the age of 70. The 8-16 kHz extended high-frequency hearing threshold test (“EHFAT”) was measured on 30 ears of the aged deaf, 30 ears of deafness and 25 ears of tinnitus. Results The results of this experiment found that in all age groups, the mean and standard deviation of the hearing threshold measured by the frequency of 8k-16kHz were: the hearing threshold increased with age; the hearing threshold was specifically increased with certain frequency characteristics in all age groups ; In the maximum output intensity of audiometer, from low frequency to higher frequency, with the increase of age, the detection rate of acoustic signal is gradually decreased. The difference in hearing threshold changes between subjects also showed different characteristics due to frequency and age, with the most significant difference between 11-16 kHz thresholds (especially seen in some 40-year-olds). WFCAT of normal hearing level normal people and deafness, deafness and primary tinnitus patients with the same age group “WFCAT” contrast, showed significant differences. “Primary tinnitus” EHFAT test may have found that there has been high-frequency deafness. Conclusions This article shows that degenerative changes in the human cochlear system begin in middle age and progressively increase with age. The author found that high frequency hearing sensitivity and inversely proportional to the age and frequency values. EHFAT and standard deviation of hearing threshold (performance dBHL) increased with test frequency and age. Therefore, in the evaluation of early high-frequency hearing loss, age and frequency factors should be considered. By extending the frequency of hearing tests can be some early detection of potential pathological changes in the auditory system, as well as early identification of hearing defects. Early detection, diagnosis and treatment of diseases. At the same time listening threshold can be used as a clear indicator to dynamically observe the whole process of treatment and rehabilitation of deafness.