CSD 320 Exam 2 – study guide and practice exam preparation material
why is masking important - correct answer ✔✔to get individual ear info
audiological test masking - correct answer ✔✔cant cover ear like eye in test, need to intro noise
to opposite ear
auditory masking is necessary when - correct answer ✔✔hearing sensitivity is significantly
better in one ear than the other
before threshold of poorer ear is reached the intensity of the signal may be loud enough for
sound to escape into room and be heard by other ear
or loud sounds will cross from one side of head to other by bone conduction (more common)
when you done mask... - correct answer ✔✔if you present tone through headphone to ear with
HL, and if loud enough tone may be heard via bone conduction in non test ear(assuming that
ear as better hearing)
interaural attenuation - correct answer ✔✔when sounds travel from one side of the head to the
other and energy is lost
IA for AC varies by - correct answer ✔✔frequency
transducer
individual
40 db IA for supraaural headphones(AC)
70 db IA for insert earphones (AC)-less masking
0 db IA for BC
,cross hearing - correct answer ✔✔when stimulus presented to test ear crosses over and is
heard in non test ear
determined by bone conduction threshold
crossover - correct answer ✔✔when tone is intense enough on one side to vibrate skull and
cochlear fluids on the contralateral side
shadow curve - correct answer ✔✔when unmasked AC thresholds of bad ear mimics BC
thresholds in better ear
happens without masking of nontest ear(better ear)
masking - correct answer ✔✔procedure where noise is presented to better ear to prevent it
from hearing sound we deliver to test ear
present masking noise to better ear to raise threshold of better ear so it cant hear the sound
that has crossed over
insurance ppt
audiogram and tymps
review
quizzes - correct answer ✔✔
when do we mask for air conduction - correct answer ✔✔for supraaural headphones whenever
theres a 40 db difference btw unmasked AC threshold of the TE and the BC threshold of NTE
AC(TE)-IA greater than or equal to BC(NTE)
70 db for insert earphones
, maskers - correct answer ✔✔broadband and narrowband noise
broadband noise - correct answer ✔✔white noise
narrowband noise - correct answer ✔✔made up of freq that surround pure tone
plateau method - correct answer ✔✔initial masking level set to 10 db above AC threshold in
NTE
continue to increase intensity of masking signal in 5 db steps and present tone in TE
if threshold in TE keeps increasing we can assume that tone and noise are being heard by NTE
and the effective masking level hasnt been met
when intensity of masking noise is increased with no increase in threshold of tone in TE we can
assume effective masking level has been reached
narrowband noise is - correct answer ✔✔the ideal masker
objective tests - correct answer ✔✔require no behavioral response
not tests of hearing tells how structures are working
immitance measures-ME function and acoustic reflex pathway
Otoacoustic emissions-objective test of cochlear function'
auditory brainstem response-neurophysiological measures of AN nad AB function
Intraoperative monitoring-auditory and facial nerve monitoring during acoustic neuroma
removal, ABR implant surgery, cochlear implant
Otoacoustic emissions - correct answer ✔✔sounds produced by cochlea as a result of active
motility of OHCs
only in ears with normally functioning OHCs
why is masking important - correct answer ✔✔to get individual ear info
audiological test masking - correct answer ✔✔cant cover ear like eye in test, need to intro noise
to opposite ear
auditory masking is necessary when - correct answer ✔✔hearing sensitivity is significantly
better in one ear than the other
before threshold of poorer ear is reached the intensity of the signal may be loud enough for
sound to escape into room and be heard by other ear
or loud sounds will cross from one side of head to other by bone conduction (more common)
when you done mask... - correct answer ✔✔if you present tone through headphone to ear with
HL, and if loud enough tone may be heard via bone conduction in non test ear(assuming that
ear as better hearing)
interaural attenuation - correct answer ✔✔when sounds travel from one side of the head to the
other and energy is lost
IA for AC varies by - correct answer ✔✔frequency
transducer
individual
40 db IA for supraaural headphones(AC)
70 db IA for insert earphones (AC)-less masking
0 db IA for BC
,cross hearing - correct answer ✔✔when stimulus presented to test ear crosses over and is
heard in non test ear
determined by bone conduction threshold
crossover - correct answer ✔✔when tone is intense enough on one side to vibrate skull and
cochlear fluids on the contralateral side
shadow curve - correct answer ✔✔when unmasked AC thresholds of bad ear mimics BC
thresholds in better ear
happens without masking of nontest ear(better ear)
masking - correct answer ✔✔procedure where noise is presented to better ear to prevent it
from hearing sound we deliver to test ear
present masking noise to better ear to raise threshold of better ear so it cant hear the sound
that has crossed over
insurance ppt
audiogram and tymps
review
quizzes - correct answer ✔✔
when do we mask for air conduction - correct answer ✔✔for supraaural headphones whenever
theres a 40 db difference btw unmasked AC threshold of the TE and the BC threshold of NTE
AC(TE)-IA greater than or equal to BC(NTE)
70 db for insert earphones
, maskers - correct answer ✔✔broadband and narrowband noise
broadband noise - correct answer ✔✔white noise
narrowband noise - correct answer ✔✔made up of freq that surround pure tone
plateau method - correct answer ✔✔initial masking level set to 10 db above AC threshold in
NTE
continue to increase intensity of masking signal in 5 db steps and present tone in TE
if threshold in TE keeps increasing we can assume that tone and noise are being heard by NTE
and the effective masking level hasnt been met
when intensity of masking noise is increased with no increase in threshold of tone in TE we can
assume effective masking level has been reached
narrowband noise is - correct answer ✔✔the ideal masker
objective tests - correct answer ✔✔require no behavioral response
not tests of hearing tells how structures are working
immitance measures-ME function and acoustic reflex pathway
Otoacoustic emissions-objective test of cochlear function'
auditory brainstem response-neurophysiological measures of AN nad AB function
Intraoperative monitoring-auditory and facial nerve monitoring during acoustic neuroma
removal, ABR implant surgery, cochlear implant
Otoacoustic emissions - correct answer ✔✔sounds produced by cochlea as a result of active
motility of OHCs
only in ears with normally functioning OHCs
