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Audiology Exam 1 > Masking > Flashcards

Flashcards in Masking Deck (15)
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1
Q

T/F Human ears are not acoustically isolated

A

True

2
Q

T/F Tones presented via air conduction to one ear can be loud enough to stimulate the opposite ear via bone conduction

A

True

3
Q

Crossover hearing

A

When a tone is presented to one ear at a given level and it is heard at a lower level in the opposite ear

4
Q

the decrease in the level of an acoustic signal as it passes from one ear to the cochlea of the opposite ear

A

Interaural Attentuation

5
Q

Transducers

A

Supra-aural (TDH) and insert earphones

6
Q

Anytime the air conduction threshold in one ear differs from the air or bone conduction threshold in the other ear by a minimum of _____ dB when using supra-aural headphones, crossover may have occurred.

A

40 dB

7
Q

Anytime the air conduction threshold in one ear differs from the air or bone conduction threshold in the other ear by a minimum of _____ dB when using insert earphones, crossover may have occurred.

A

70 dB

8
Q

Interaural attenuation for bone conduction is _____ dB.

A

0 dB

9
Q

We can assume the patient hears the tone from bone conduction in the ____ cochlea.

A

Better

10
Q

______ allows us to acoustically isolate the test ear.

A

Masking

11
Q

The noise is heard in the ________ ear.

The tone is heard in the ________ ear.

A

Non-test/Test

12
Q

Noise elevates the threshold in the non-test ear and ________ it from the test.

A

eliminates

13
Q

________ noises are introduced to the non-test ear.

A

Narrow-band noises

14
Q

T/F Speech shaped noise is used to mask speech stimuli.

A

True

15
Q

How to confirm crossover

A
  1. Determine if the threshold in the test ear was the result of a crossover (40 dB difference for TDH headphones; 70 dB difference for insert earphones)
  2. Present narrow-band noise to non-test ear at a level 5-10 dB above the threshold in that ear
  3. Test the threshold of the test ear again (if it increases by 5-10 dB, the original threshold was the result of cross hearing)