AAO-HNSF Certificate Program for Otolaryngology Personnel

Why Use the Hood Method?

• Goal of audiogram – gain ear specific information • Goal of plateau – establish level at which the threshold remains unchanged in the presence of a changing masking level

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

25

How Much Masking? • Avoid under-masking and over-masking • Find the level of effective masking –What is the true threshold? –How much masking is needed without changing the true threshold?

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

26

How Much Masking? Air Conduction

Air conduction threshold in the non-test ear + 15 dB

15 dB

15 dB

25

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

27