نتایج جستجو برای: normal hearing threshold
تعداد نتایج: 772657 فیلتر نتایج به سال:
Background: Taxi drivers have the most important role in the public transport services. They are exposed to various harmful agents and occupational hazards. Noise is a harmful occupational factors and hearing loss is its most important effect. Protection of drivers against hearing loss is essential. This study was performed to determine the prevalence of hearing loss among taxi and agency drive...
introduction: occupational exposure to excessive noise is commonly encountered in a large number of industries in iran. this study evaluated the hearing threshold and hearing loss in meybod tile factory workers. methods: this cross-sectional study included 371 tile factoryworkers during summer and autumn of 2005. current noise exposure was estimated using sound level meter .a specially formatte...
Background and Objectives The latency of auditory brainstem response (ABR) wave V shifts depending on age, hearing threshold, stimulus intensity. This study was performed to examine the latencies ABR in infants with normal sensorineural loss.Subjects Method retrospective review 318 (539 ears) performed. patients were divided into four groups according age at time test (group A: 0-2 months, grou...
Introduction: Occupational exposure to excessive noise is commonly encountered in a large number of industries in Iran. This study evaluated the hearing threshold and hearing loss in Meybod tile factory workers. Methods: This cross-sectional study included 371 tile factoryworkers during summer and autumn of 2005. Current noise exposure was estimated using sound level meter .A specially formatt...
introduction: in order to achieve a higher success rate for tympanoplasty, different techniques have been developed, and a wide variety of grafting materials have been developed. one of the techniques currently receiving considerable attention involves not lifting the remaining of eardrum from the malleus and embedding the graft underneath in order to repair the eardrum correctly in its origina...
Abstract Background and aims: Occupational noise is a major cause of hearing loss and tinnitus. In the present study, acoustic characteristics of tinnitus were evaluated and their relation with hearing loss and nervousness was studied. Methods: Our study was performed on 56 male workers aged between 40 to 56 years including 28 workers with accompanied hearing loss and tinnitus and a long ...
background: hearing loss is one of the common complaints of diabetics. the aim of this study was to evaluate the hearing status of diabetic patients in babol, north of iran. methods: the hearing status of 50 type 2 diabetic patients (case group) and 50 healthy individuals (control group) were evaluated from october 2011 to september 2012. audiometry was done with the frequencies of 250, 500, 10...
Background: The objective of this study was to describe the audiologic and related characteristics of a group patient with speech perception affected out of proportion to pure tone hearing loss. A case series of patient were referred for evaluation and management to the Hearing Research Center.To describe the clinical picture of the patients with the key clinical feature of hearing loss for pur...
Gap detection is a commonly used measure of temporal resolution, although the mechanisms underlying gap detection are not well understood. To the extent that gap detection depends on processes within, or peripheral to, the auditory brainstem, one would predict that a measure of gap threshold based on the auditory brainstem response (ABR) would be similar to the psychophysical gap detection thre...
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