High-Frequency Hearing
نویسنده
چکیده
Glossary: Azimuth – direction along the horizon relative to a listener Δt – difference in the time of arrival of a sound at the two ears Δfi – difference in the frequency-intensity spectra of a sound at the two ears Functional head size – the time it takes for sound to travel around the head from one ear to the Octave – an interval between two frequencies that have a 2 to 1 ratio (.25 kHz to .5 kHz and 50 kHz to 100 kHz are both intervals of one octave) Subterranean animals – animals that live their entire lives below ground
منابع مشابه
The relationship between ultra-high frequency thresholds and transient evoked otoacoustic emissions in adults with tinnitus
Background: The possible role of cochlear function in tinnitus generation is still a matter of debate. To assess the role of outer hair cell dysfunction in tinnitus and its possible relationship with ultra-high frequency (UHF) hearing sensitivity, transient evoked otoacoustic emissions (TEOAE) and UHF hearing thresholds were investigated in normal hearing individuals with and withou...
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Introduction: Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise. In this study we aimed to assess the effect of exposure to mixed aromatic solvents on hearing in the absence of exposure to hazardous noise. Materials and Met...
متن کاملبررسی وضعیت شنوایی لوکوموتیورانان راه آهن یزد در سال 1390
Background: Noise-induced hearing loss is a sensorineural hearing loss, which is associated with exposure to high levels of sound. Since train drivers exposed to high noise levels and the use of hearing protection devices is relatively difficult and they also need to hear the radio communications, this study examines the hearing status of train drivers of Yazd Railway Company. Methods: This i...
متن کاملFrequency of Profound Congenital Hearing Loss in Healthy Newborn Infants in Fars Province
Introduction Deafness is one of the most important sensory disturbances at birth. Hearing loss can affect the development of speaking and learning during life. Early diagnosis and intervention improve language outcome. The current study aimed to determine the frequency of profound congenital hearing loss in healthy newborn infants in Fars province. Methods In a multicenter prospective study, f...
متن کاملStudy of frequency and spectrum of GJB2 gene mutations in non-syndromic hearing loss patients of Semnan province
Abstract Background and aim: The frequency of hearing impairment is one out of 500 newborn babies, worldwide. However, in Iran, due to the high prevalence of consanguineous marriages, this amount is estimated to be two to three times higher. So far, more than 120 genes causing non-syndromic Hearing loss (NSHL) have been identified in the world, of which GJB2 gene mutations are the most common c...
متن کاملTHE EFFECT OF NOISE-INDUCED HEARING LOSS ON DENTISTS
This paper presents noise problems associated with the use of air-turbine drills in dental practice. Two hundred and fifty dentists (male and female) were randomly selected from the faculty of dentistry as well as the dentists who worked private in Tehran. The results indicated that the mean value of sound pressure level produced by the high-speed drills was 69.1 db. Most of the energy from...
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تاریخ انتشار 2008