EXAM 2 REVIEW

Question 1

Tuning curves can be measured for __ structure that elicits a ________/_______

Answer 1

any; response/potential

Question 2

the bottom peak on a tuning curve is the ____________ __________

Answer 2

characteristic frequency

Question 3

tuning curves give evidence for ___________ ________

Answer 3

tonotopic organization

Question 4

low frequency stimuli lead to ____ and more ______ tuning curves

Answer 4

wider and more shallow

Question 5

high frequency stimuli lead to _______ and _______ tuning curves

Answer 5

sharper and deeper

Question 6

Which of the following is displayed on a tuning curve?

a. firing rate of auditory nerve fibers at different frequencies of stimulation
b. velocity of basilar membrane vibration and different presentation levels
c. both a and b
d. none of the above

Answer 6

d. none of the above

Question 7

broadened tuning = ______ frequency _________

Answer 7

poorer; selectivity

Question 8

what frequencies are we most sensitive to?

Answer 8

mid frequencies

Question 9

In signal detection theory, what is the definition of an observer’s criterion?

a. the point above which they say “no” and below which they say “yes”
b. the point above which they say “yes” and below which they say “no”
c. the distance between the the mean of the SN distribution and the mean of the N distribution
d. the proportion of the SN distribution that overlaps with the N distribution

Answer 9

b. the point above which they say “yes” and below which they say “no”

Question 10

Using the terms of clinical decision theory, a clinical test should ideally have:

a. high sensitivity and low specificity
b. low sensitivity and high specificity
c. low sensitivity and low specificity
d. high sensitivity and high specificity

Answer 10

high sensitivity and high specificity

Question 11

In the context of clinical decision theory, “sensitivity” refers to:

a. hit rate
b. percentage of infants with hearing loss who did not pass the hearing screening
c. difference between the signal+noise distribution
d. both A and B

Answer 11

d. both A and B

Question 12

True or false: if a clinical test has perfect sensitivity (no false negatives/no misses) then it will always be considered an ideal test

Answer 12

false

Question 13

Which of the following parts of a cochlear implant are actually implanted within the body? (select all that apply)

a. speech processor
b. electrode array
c. transmitter
d. microphone
e. receiver

Answer 13

b. electrode array

e. receiver

Question 14

if you are trying to measure a signal threshold in one ear of a patient, but the level is so high that it can be percieved in the opposite ear (crosshearing), in which ear would you present a masking tone?

a. ear being measure
b. opposite (contralateral) ear
c. both ears
d. neither - a masking tone is not needed

Answer 14

b. opposite (contralateral) ear

Question 15

true or false: for any given tonal signal, you are more likely to mask it with a sound that is higher in frequency than the signal than you are to mask it with a sound that is lower in frequency than the signal

Answer 15

false