Audiology: pure-tone audiometry
Terms in this set (16)
establish thresholds of individuals
purpose of pure tone audiometer
what's the range of a pure tone audiometer?
-10 to 110 dB
what's the intensity range of a pure tone audiometer?
narrow band, speech shaped
types of stimuli in addition to pure tones
the sensitivity of the human ear is different across different frequencies, represents thresholds in dB for young, healthy adult
define minimum audibility curve
what scale is used in pure tone audiometry?
insert earphones, decrease chances of leakage, keeps both ears separate
which ear phones are important for masking and why?
finding threshold, once you get a response, decrease dB by 10, when patients responds, up 5.
what number represents normal hearing on the dB HL scale?
40-55 dB HL
25-40 dB HL
55-70 dB HL
moderately severe HL
70-90 dB HL
above 90 dB HL
determine person's inner ear sensitivity by bypassing the outer and middle ear
purpose of bone conduction
AC- better ear
BC- doesn't matter bc both cochlea are stimulated
which ear should be tested first in AC and BC