Behavior Audiometry Final

Question 1

What do behavior audiological tests allow us to do?

Answer 1

distinguish between central and peripheral disorders

Question 2

What are tone decay tests?

Answer 2

allows testing to find abnormally high reduction in perceived loudness of a continuous pure tone

Question 3

What does an elongates rate of decay as the intensity increases indicate?

Answer 3

cochlear disorders

Question 4

What it mean if the rate of decay is rapid without changing with increasing intensity?

Answer 4

retrocochlear disorders

Question 5

Describe Carhart Tone Decay test procedure.

Answer 5

-test tone presented at 0 dB SL for 60 seconds-if it is heard for the full minute the test is complete-if not, increase intensity by 5 dB without tone interruption-restart 60 second period-if tone is till not heard increase by 5 dB again and reset timer-continue until tone is hear for the full 60 seconds of reaches limits of audiometer

Question 6

Results for Carhart Tone Decay Test:

Answer 6

-tone decay less than or equal to 30 dB= negative for retrocochlear pathology-tone decay greater than 30 dB= positive for retrocochlear pathology

Question 7

Describe the procedures for the Rosenberg Tone Decay Test.

Answer 7

-tone presented at threshold-start timing-tone intensity increased 5 dB each time the signal is not heard-after 60 second record the amount of decay in SL

Question 8

Describe the procedure for the Owen’s Tone Decay Test.

Answer 8

-present tone at 5 dB SL-if hand is lowered under 60 seconds: turn off tone for 20 seconds, prior to presentation of 5 dB increased signal-upon completion of 20 second rest, reintroduce tone-test is done after presentation of 20 dB SL

Question 9

Results of Owen’s Tone Decay Test (Not super important)

Answer 9

-Type 1 -tone heard for 60 seconds @ 5 dB SL -indicates normal or cochlear disorder-Type II-A -5 dB SL adapts prior to 60 seconds -10 dB SL tone heard for full 60 seconds -indicates cochlear dysfunction-Type II-B -5 & 10 dB SL adapts prior to 60 seconds -15 dB SL tone heard for full 60 seconds -indicates cochlear dysfunction-Type II-C -5, 10 & 15 dB SL adapts prior to 60 sec -20 dB SL tone heard for full 60 sec -indicates cochlear dysfunction-Type II-D -none of the tone heard for full 60 sec -remains audible longer period of time with each successively higher sensation level -indicates cochlear dysfunction-Type II-E -5 dB increase produces small increase in audibility time-average 4 to 7 seconds per 5 dB increase-indication cochlear or retrocochlear -Type III-5 dB increase does not increase audibility time; indication retrocochlear pathology (less than 4 sec is no change

Question 10

Describe the procedure of Olsen Noffsinger Tone Decay Test.

Answer 10

same as Carhart’s but start presentation level at 20 dB SL

Question 11

Results of Olsen Noffsinger’s Tone Decay Test.

Answer 11

-tone decay less than or equal to 10 dB= negative for retrocochlear pathology-tone decay greater than 10 dB= positive for retrocochlear pathology

Question 12

Describe the Suprathreshold Adaptation Test.

Answer 12

-present tone at high intensity, 100 dB HL, for 60 seconds

Question 13

Results of Suprathreshold Adaptation Test.

Answer 13

-tone heard entire 60 seconds= negative for retrocochlear pathology-tone heard less than 60 seconds= positive for retrocochlear pathology

Question 14

What is loudness recruitment?

Answer 14

abnormal rapid growth in loudness

Question 15

Describe the Alternating Binaural Loudness Balance (ABLB) Test.

Answer 15

-tone is presented alternately between the ears (fixed (normal) ear the tone intensity does not change, variable (abnormal) ear the tone intensity manipulated up and down)-patient reports when tone is louder in right ear, left ear, or equally loud

Question 16

What are the types of recruitment?

Answer 16

-complete recruitment-hyper-recruitment-incomplete recruitment-no recruitment-decruitment

Question 17

What is complete recruitment? Indication?

Answer 17

-loudness balances at higher intensities occur at same intensities in both ears-cochlear pathology

Question 18

What is hyper-recruitment? Indication?

Answer 18

-loudness in abnormal ear catches up to normal ear and it becomes greater-more psychological than physiological

Question 19

What is incomplete recruitment? Indication?

Answer 19

-results are between complete and no recruitment-inconclusive

Question 20

What is no recruitment? Indication?

Answer 20

-levels between ears remain stable-conductive pathology

Question 21

What is decruitment? Indication?

Answer 21

-loudness grows slower than normal rate for abnormal ear, loudness lost rather than gained as intensity is increased-retrocochlear pathology

Question 22

What is simultaneous loudness balance?

Answer 22

-present tones to both ears at the same time-patient hears single tone fused somewhere (head, right ear, left ear)

Question 23

In what situation can ABLB not be completed?

Answer 23

-if there is no normal hearing ear-when sensorineural hearing loss is present bilaterally

Question 24

What is AMLB? Procedure?

Answer 24

-Alternate Monaural Loudness Balance-loudness balance completed with 2 different tones within same ear-intensity level fixed for on frequency other is varied

Question 25

What is Loudness Discomfort Level? Normal range? Indications?

Answer 25

-used to determine presence of recruitment-90 to 105 dB HL-normal level LDLs= cochlear impairment-LDLs above norms= retrocochlear pathology

Question 26

What is Intensity Difference Limen (IDL)?

Answer 26

smallest difference in intensity that can be perceived

Question 27

What is Short Increment Sensitivity Index (SISI)? Results?

Answer 27

-present increments of predetermined size, patient must indicate if they can hear the changes-high % of increments= cochlear disorder-low % of increments= retrocochlear disorder, conductive loss, normal hearing

Question 28

What is Bekesy Audiometry?

Answer 28

-evaluates 1 frequency at a time-intensity creases and decreases at rate of 2.5 dB/second

Question 29

Types of Bekesy Audiograms (not important)

Answer 29

-type 1 bekesy audiogram-pulsed and continuous tone tracings interwoven-10 dB tracing width -follows pattern of pt’s audiogram -indication-normal hearing-conductive HL -type 2 bekesy audiogram-pulsed and continuous tracings interwoven up to approx 1000 Hz -2 things occur at high freq-continuous tracing falls below pulsed tracing -amount less than 20 dB -decrease runs parallel to pulsed -continuous tracing shifting due to tone decay-continuous tracing narrow to 3-5 dB wide -narrowing due to intensity DL around threshold-does not identify loudness recruitment -indication-cochlear dysfunction -presbycusis -sensorineural HL -idiopathic-type 3 bekesy audiogram -continuous tracing falls very quickly from pulsed tracing -often to limits of audiometer -indication-retrocochlear pathology -type 4 bekesy audiogram-continuous tracing quickly falls more than 20 dB below pulsed audiogram -decrease runs parallel to pulsed tracing -equivocal indication-cochlear dysfunction -retrocochlear pathology-primary indication -type 5 bekesy audiogram-pulsed tracing falls below continuous -pulsed tracing shifts due to effects of loudness memory-pulsed tracing requires more intensity than continuous tracing for equalloudness -indication-functional hearing loss

Question 30

What is Forward-Backward/Reverse Bekesy Audigram?

Answer 30

-3 tones traced-pulsed tracing- 200 to 8000 Hz -continuous tracings- 200 to 8000 Hz -continuous tracing- 8000 to 200 Hz-difference between continuous and pulsed tracings on sweep-frequency can be larger when frequency goes from high to low than low to high -difference called forward-backward discrepancy-large forward-backward discrepancies -indicate retrocochelar pathology

Question 31

What is Bekesy audiometry most sensitive to?

Answer 31

cochlear dysfunction