نتایج جستجو برای: hearing in noise
تعداد نتایج: 17014750 فیلتر نتایج به سال:
background: noise is one of the most pervasive hazards in industrial settings. this retrospective study was carried out to assess the effects of noise exposure on hearing status, blood lipids and blood pressure of employees of a local fireclay mine. methods: two hundred and forty male workers were studied. data on audiometric measurements, blood lipids and blood pressure were derived from the w...
This study deals with noise problems associated with the use of air-turbine drills in dental practice. The sigh-speed dental drills offer an entirely new concept cavity preparation and presents by far the easiest method of cutting hard dental tissues. The use of these machines, however, cause some new problems among which is the possibility of harmful effects on the hearing sense of the...
Introduction: The prevalence of unilateral sensory neural hearing loss is 3 to 6 in every 1000 people and this prevalence will be about 3 to 5 percent by including conductive hearing loss. Studies have shown that people with unilateral hearing loss are having problems in speech and language development. Nowadays the available options for treatment and rehabilitation of people with unilateral he...
background: traffic noise is one of the major sources of environmental pollution that can cause permanent or temporary loss of hearing in drivers. the purpose of this study was to estimate the prevalence of hearing loss among professional long-distance drivers in bandar abbas freight terminal. methods: one thousand long distance occupational drivers in bandar abbas freight terminal not certifie...
Introduction and purpose: Noise pollution is an important health problem in most industries, especially in the small inland industries. The purpose of this study was to evaluate the noise pollution in turning and polishing shops in Qom, Iran, and compare it with the sound standards in the country. Methods: In the present descriptive cross-sectional study, noise assessment was performed using th...
background: speech perception ability depends on auditory and extra-auditory elements. the signal-to-noise ratio (snr) is an extra-auditory element that has an effect on the ability to normally follow speech and maintain a conversation. speech in noise perception difficulty is a common complaint of the elderly. in this study, the importance of snr magnitude as an extra-auditory effect on speech...
background: military personnel are usually exposed to high levels of impulse noise (in) which can lead to hearing loss. objectives: the purpose of this study was to assess the effects of relatively low level exposure of impulse noise (in) during shooting practice on hearing using pure tone audiometry (pta) and transiently evoked otoacoustic emission (teoae) in military personnel. materials and ...
Background: Noise and noise-induced hearing loss (NIHL) are the most prevalent workplace problems. The best way to prevent NIHL is to monitor people's annual noise exposure (ANE) using tools, such as questionnaires. The present study aims to assess reliability of the Persian version of the Noise Exposure Questionnaire (NEQ) and NIHL scores among workers. Materials & Methods: This descriptive s...
background and aim: this study investigated whether objective temporal processing paradigms including voice-onset-time, speech-in-noise, and amplitude modulated-broad-band noise (am-bbn) are sensitive to disrupted temporal processing in elderly listeners with normal hearing (age-related-temporal processing deficit). methods: we evaluated 15 adults aged 64–80 years using behavioural measures of ...
background and aim: quick speech in noise (q-sin) test has popularity for evaluating speech recognition in noise. the present study has been paid to build five new persian lists with respect to all possible factors affecting the test, to determine validity of the test and to run five lists for normal hearing subjects and assessment of reliability. methods: to build lists, frequent, familiar and...
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