Cross Hearing & Masking Overview

Question 1

What is the difference between ipsilateral and contralateral?

Question 2

What is the difference between the test ear (TE) and non-test ear (NTE)?

Question 3

Define crossover

Answer 3

Sounds in the test ear are intense enough to stimulate the non-test ear so that sound is present in the non-test ear

Question 4

Define cross hearing / shadow hearing

Answer 4

Occurs when the intensity of the sound at the non-test ear is perceived or audible

Question 5

What is the shadow curve?

Question 6

What is interaural attenuation?

Answer 6

Sound energy is “lost” or absorbed as the signal crosses over from one ear to the other

Question 7

What are the IA values for the different transducers?

Question 8

T/F: with insert earphones, IA is greater in the lower frequencies compared to higher frequencies

Answer 8

True

Question 9

T/F: IA for most individuals is 40 dB when using headphones

Answer 9

False

Question 10

T/F: IA is greater when using supra-aural headphones compared to using insert earphones

Answer 10

False

Question 11

Greater the IA, greater the chance of cross hearing

Answer 11

False

Question 12

T/F: occlusion effect is greater when using shallow seated insert earphones compared to deep seated insert earphones

Answer 12

False

Question 13

T/F: Cross hearing occurs primarily via bone conduction

Answer 13

True