Exam Preview for 29816: BrainHearing and Bone Anchored Devices: Why

BrainHearing and Bone Anchored Devices: Why More Output Matters to All Users

Please note: exam questions are subject to change.

1. Why is listening more effortful for those with hearing loss? Hearing impaired users more often need to activate working memory to compensate for a mismatch between auditory representation and long-term memory Hearing impaired people have less working memory There is no difference Hearing impaired people often focus on something other than speech
2. Which of the following options is not a way of measuring how taxing a signal processing technique is on the working memory? Recollection sentence (testing recall of words) Pupil dilation Speed of a second task done at the same time as listening to speech, e.g. drawing a figure Audibility test, such as a aided free-field thresholds
3. Which of the following holds true for the majority of situations in a hearing impaired patient's everyday life? Positive signal-to-noise ratio Negative signal-to-ratio Sound levels constantly below 65dB SPL Situations where the patients report very low speech intelligibility
4. Working memory Is an important tool for understanding speech Is a resource people use to help access information when remembering instructions Is how people store information for a (short) time before it is needed All of the above
5. What is true for a bone anchored hearing system? The maximum output is typically higher than the upper comfortable level The maximum output is typically lower than the upper comfortable level The maximum output could hurt residual hearing The maximum output is an irrelevant parameter for bone anchored stimuli
6. What is the biggest difference between when the transducer is in direct contact with the bone, compared to when the transducer is only held against like the skin, such as a soft band or implantable magnetic solution? The sound is weaker because the skin acts like an amplifier The high frequencies are up to 20 dB stronger because they are not damped by the skin There is no difference The low frequencies are much stronger when the transducer is in direct contact to the bone
7. Which of the following is true when we test different solutions with speech intelligibility and listening effort test, e.g. by word recall. The recall is only better when the speech intelligibility is better Recall cannot be measured when speech intelligibility is 100% Recall can only be measured in the most difficult situations Recall can be better, even if the speech intelligibility is the same
8. Which groups would benefit from a SuperPower bone anchored device with higher maximum output Single-sided deaf patients Patients using softband and head band Patients with conductive or mixed hearing losses All of the above
9. In which situations will the difference between high and low maximum output be the clearest (if we assume same gain prescription as in the Ponto family)? We do not expect an audible difference In dynamic situations with varying sound levels For very soft sounds It will only affect speech signals
10. Which of the following is true when designing a sound processor with BrainHearing approach in mind: A well designed hearing aid/sound processor should reduce the effort needed to understand speech It is enough for a sound processor to provide adequate audibility It is enough for a sound processor to provide good scores on a speech-in-noise test It is enough to provide gain that can be measured using a skull simulator