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Introduction to Cortical Auditory Evoked Potentials in Adults: Estimating Hearing Sensitivity & the Effects of Aiding, presented in partnership with Seminars in Hearing

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1.  The N1 response is fully mature by the age of:
  1. 18 weeks
  2. 8 months
  3. 8 years
  4. 18 years
2.  The main generators of the CAEP are anatomically in Heschls gyrus which is in the:
  1. Temporal lobe
  2. Parietal lobe
  3. Frontal lobe
  4. Cerebellum
3.  The spectral peak of the near-threshold CAEP is in the range:
  1. 0.2 - 0.5 Hz
  2. 2 - 5 Hz
  3. 20 - 50 Hz
  4. 200 - 500 Hz
4.  The CAEP threshold could be defined by any of the following but is defined in this lecture as:
  1. the lowest level at which a response is present
  2. mid-way between the lowest level at which a response is present and the highest level at which a response is absent
  3. the lowest level at which a response is present, with a response absent at a level of 10 dB or less below this level
  4. the level corresponding to the zero response amplitude, extrapolated from the amplitude input-output function
5.  There is an average difference between the CAEP threshold and the "true" behavioral threshold, sometimes known as the bias. In adults and using tone burst stimuli this is typically:
  1. less than 5 dB
  2. 5 -10 dB
  3. 10 - 15 dB
  4. 15 - 20 dB
6.  When presenting stimuli at conversational levels (i.e. between 55 and 75 dB SPL) in the free field, the following conclusion is reached in this lecture. Hearing aid gain significantly affects CAEP amplitudes:
  1. in normal-hearers and hearing-impaired users
  2. in normal-hearers but not in hearing-impaired users
  3. not in normal-hearers but only in hearing-impaired users
  4. not in normal-hearers nor hearing-impaired users
7.  When, starting from an audibility equal to zero, the audibility is being increased indefinitely, the following occurs with the CAEP amplitude:
  1. it keeps on increasing indefinitely as well
  2. it increases up to a certain point, where it plateaus
  3. it does not increase or decrease (it therefore remains constant)
  4. it fluctuates randomly
8.  The observed differences in CAEP amplitude growth between normal-hearing and hearing-impaired groups in this lecture can be explained by:
  1. different cortical processing mechanisms in normal hearing versus hearing impaired groups
  2. changing audibility of the stimulus
  3. the hearing aid noise always being audible to one of the two groups
  4. B & C
9.  When stimulus audibility is close to threshold, increasing the hearing aid gain will have the following effect on CAEP amplitudes in hearing-impaired wearers:
  1. CAEP amplitude will decrease
  2. CAEP amplitude will increase
  3. CAEP amplitude will stay the same
  4. This cannot be predicted. It depends on the stimulus SNR.
10.  This lecture advocates that:
  1. CAEPs cannot be used for clinical hearing aid gain evaluation
  2. CAEPs can be used for hearing aid gain evaluation
  3. more research is still needed on the effect of other hearing aid parameters on CAEPs, but this does not prevent CAEP use in the clinic already
  4. B & C