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KMID : 1101220010330020266
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2001 Volume.33 No. 2 p.266 ~ p.271
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Basic Consideration for Pure Tone Audiometry
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Min Mi-Sik
You Seon-Woo
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Abstract
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Pure-tone audiometry is the most common measure of hearing sensitivity. Stimuli are pure tones at octave frequencies from 250Hz up to 8,000Hz and usually two interoctave frequencies(3000Hz and 6000Hz). Pure-tone audiometry should always be carried out with the patient in a double-walled, sound treated room. Test results are graphed on an audiogram. All audiogram include a graph for plotting hearing threshold levels(HTLs). Masking is the audiometric technique used to eliminate participation of the nontest ear whenever air- and bone-conduction stimulation exceeds interaural attenuation. Selection of appropriate masking is difficult, especially when there is bilateral hearing impairment. appropriate masking is difficult, especially when there is bilateral hearing impairment. Type of hearing loss, determined by comparison of the hearing thresholds for air- versus bone-conduction signals, is useful in classifying a hearing loss as sensoryneural(no air-bone gap) , conductive(normal bone conduction and a loss by air conduction), or mixed(loss by bone with a superimposed air-bone gap).
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KEYWORD
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Pure-tone audiometry hearing loss
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FullTexts / Linksout information
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Listed journal information
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