Lesson 10

Question 1

Sound being presented to one ear and then routed to the opposite ear is known as

Answer 1

cross hearing, shadow hearing, transcranical hearing (all of the above)

Question 2

When the better ear answers for the poorer ear what occurs?

Answer 2

shadow curve

Question 3

Which noise is best for masking during pure tone air and bone conduction testing?

Answer 3

narrow band noise

Question 4

Effective masking may be described as

Answer 4

an increased masking noise that shift the threshold tone, a formula method to determine how much masking noise is appropriate, a psychoacoustic method like the one proposed by Hood (all of the above)

Question 5

Masking is performed during air conduction testing when

Answer 5

a 40 db or more difference occurs between the air conduction threshold of the better and the poorer ear and a 40 db or more difference occurs between the air conduction threshold of the poorer ear and the bone conduction threshold of the better ear

Question 6

Masking is performed during bone conduction testing whenever

Answer 6

a 15 dB or more difference occurs between the obtained bone conduction threshold of the better ear and the obtained air conduction of the poorer ear

Question 7

The occlusion effect occurs during

Answer 7

bone conduction testing causing threshold shift due to headphones being placed over the ear

Question 8

A masking dilemma occurs when

Answer 8

it is impossible to mask, the patient displays a bilateral conductive loss, masking can not be completed due to overmasking (all of the above)

Question 9

Undermasking is defined as

Answer 9

occurring more often during air conduction testing

Question 10

Central masking can effect a threshold by

Answer 10

5 dB