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Which threshold of hearing is measured by a pure-tone audiometer?(a) air-conduction thresholds of hearing(b) bone-conduction thresholds of hearing(c) speech reception thresholds for diagnostic purposes(d) air-conduction and bone-conduction thresholds of hearingThis question was posed to me during an internship interview.This intriguing question comes from Mechanism of Hearing topic in division Audiometry of Biomedical Instrumentation

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The correct answer is (d) air-conduction and bone-conduction thresholds of hearing

The best EXPLANATION: A pure-tone AUDIOMETER is used PRIMARILY to obtain air-conduction and bone-conduction thresholds of hearing. Audiometers may be divided into two main groups on the BASIS of the TYPE of stimulus they provide to elicit an auditory response: pure-tone audiometers and speech audiometers. These thresholds are helpful in the diagnosis of hearing loss.



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