Kj Electrical Response Audiometry

Front 1

Tone pips or tone bursts are more ___________ than clicks

Back 1

frequency-specific

Front 2

Results obtained from clicks are dominated by _______ frequencies

Back 2

high

Front 3

What are the 3 potentials than an ECoG provides?

Back 3

1. cochlear microphonic (presence indicates stimulation of functional hair cells)
2. summation potential
3. compound action potential (eighth nerve)

Front 4

The most accurate and sensitive of electrical response audiometry techniques is ____

Back 4

ECoG

Front 5

To separate the superimposed summation potential from the compound action potential, you can ________

Back 5

increase the click rate

Front 6

What are the ECoG findings in Meniere's disease?

Back 6

1. increased negative summation potential during periods of hearing loss
2. broadened compound action potential, with tendency to form multiple negative responses

Front 7

________ is more accurate than ECoG for detecting acoustic tumors

Back 7

ABR

Front 8

The majority of SNHL is sloping with greater loss in the ____ frequencies

Back 8

high

Front 9

The audiogram cannot be predicted from ECoG and ABR except in cases of _____ hearing loss

Back 9

flat

tone bursts or pips (rather than the wide-band click) can help estimate audiometric thresholds

Front 10

The SN-10 response is generated in the ______________

Back 10

primary auditory cortex

Front 11

The frequency-following response is distinguished from cochlear microphonic by onset latency of ___ ms and originates in the __________

Back 11

6

inferior colliculus

The frequency following reponse is a measure of ABR audiometry

Front 12

Auditory steady state evoked potentials allow for a more rapid means of establishing ___________

Back 12

frequency-specific thresholds

Auditory steady state evoked potentials are measurements recorded in ABR audiometry

Front 13

What is the advantage of the high-pass masking technique?

Back 13

Provides information as to the place in the cochlea where the loss occurred

Click stimulus is given and brain stem responses are recorded.

Front 14

The best test for acoustic neuroma detection is ______

Back 14

ABR

Look at interaural latency of wave V

Front 15

Conductive hearing loss _________ ABR latency

Back 15

increase because the physical stimulation to the cochlea is reduced

Front 16

Large acoustic tumors are best detected by measuring interval between waves ____ and ____

Back 16

waves III and V

Front 17

Standard ABR detects acoustic neuromas greater than ___ cm

Back 17

1

Front 18

What does a stacked ABR help detect? What is meant by stacked?

Back 18

small intracanalicular tumors less than 1cm

Wave V peaks are aligned

Front 19

What is CHAMP?

What does it help detect?

Back 19

cochlear hydrops analysis masking procedure

Meniere's disease

in a normal patient, high pass masking will delay the latency of a wave similar to wave V. In Menieres, it does not