ASLP 4045 Exam #2- Hearing Aids and HAT
TEST (questions and verified answers) FREQUENTLY MOST TESTED
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QUESTIONS |already graded A+|100% passed!!
1. What are the is- 1. Decreased audibiility
sues faced by 2. Decreased dynamic range
those individuals 3. Decreased frequncy resolution
with hearing loss? 4. Decreased temporal resolution
2. What does the Decreased sensitivity to sounds , poor thresholds ( elevated), reduced audibility
term decreased for speech sounds
audibility mean?
3. What does the Decreased number of dB levels between the softest sound you can hear (
term decreased threshold of audibility ) and when sounds become painful ( level of discomfort)
dynamic range decreased range of intensity levels that you can hear
mean?
4. What does the The clarity between frequencies is decreased, decreased ability to tell one
term decreased frequency apart from another
frequency resolu-
tion mean?
5. What does the Refers to timing, trouble detecting , sensing the pauses between sounds and
term decreased syllables within words, between words in sentence, and voice onset time. Poor
temporal resolu- temporal resolution leads to poor speech understanding because the person
tion mean ? has trouble distinguishing between parts of the sentences and words.
6. Damage to the OHC damage causes a decreased sensitivity for soft sounds, - can hear less of
outer hair cells the speech sounds in higher intensities ( dB level)
causes what ? —-because the OHCs sharpen the peak of the traveling wave for sounds <40 dB
( this means it won't vibrate the basilar membrane around that specific frequency
( sound) as much so that the sound can be discerned better by IHC) , and
this boosts these sounds ( increases the gain for these sounds) to allow the
IHC to sense these softer sounds ( increases the displacement on the basilar
membrane)
, ASLP 4045 Exam #2- Hearing Aids and HAT
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7. How many rows or 3 rows OHC and if they are damaged decreased frequency resolution in the
OHC and IHC and frequencies associated with the area around the Level/part of the BM that
what happens if those hair cells served, would have trouble discriminating speech sounds and
the OHC damaged frequencies in he prescience of others, and reduced /decreased audibility (
? especially of soft sounds)-
8. Poor frequency Poor temporal resolution
resolution can lead
to what
9. Without the outer Moderate cochlear hearing loss - a 40 to 60 dB loss ( because the outer hair cells
hair cells what kind boost frequencies that are softer)
of hearing loss re-
sults
10. Electromotillity of OHC increase gain for softer sounds and brain sends signals to the cochlea to
the outer hair cells do this, the OHC act as a cochlear amplifier and they increase the displacement
on the basilar membrane for softer sounds
11. What are the high High frequency components - consonants ( weaker or softer than vowels)
frequency compo- Low frequency components - vowels
nents of speech vs. High frequency information is the most commonly missed
the low frequen-
cy components of
speech?
12. tonotopic organi- As you stimulate the cochlea the basilar membrane areas respond (vibrate
zation of the ) based on the frequencies that vibrates best in that particular area of the
cochlea membrane. Base - high frequency
Apex- low frequency
Basilar membrane is an overlapping series of band pass filters
13.
, ASLP 4045 Exam #2- Hearing Aids and HAT
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What happens Speech is audible , but not intelligible because the consonants. ( high frequency
when high fre- components help to make speech meaningful) , decreased intelligibility of words
quency informa-
tion is missed what
results?
14. For 90 percent of 500- 4K HZ
adults and 75 per-
cent of children
with hearing loss
, degree of im-
pairment worsens
in which frequency
range
15. OHC loss results in Attenuation, Decreased volume of soft sounds, decreased audibility/sensitivity
16. IHC damage re- Distortion , loss of clarity , distorts signal completely
sults in
17. Combination of Distortion, loss of sensitivity and clarity
OHC and IHC loss
18. Difference be- . dynamic range
tween the level of
discomfort and the
threshold of audi-
bility
19. Is it appropriate to No because if someone has a reduced dynamic range there might be an
amplify all sounds abnormal growth in loudness , and ppl's threshold of discomfort typically does
by the amount not change much.
needed to make