Hearing Loss Hearing Aids and Assistive Devices Test 2 — Questions and Answers
Question 1: FM systems used in classrooms work by:
- Amplifying all sounds in the room equally
- Transmitting the teacher's voice directly to the student's hearing device via radio frequency (Correct answer)
- Generating captions on a screen
- Using vibration to convey sound
Correct answer: Transmitting the teacher's voice directly to the student's hearing device via radio frequency
FM systems use radio frequency transmission to send the speaker's voice directly to the listener's hearing device, reducing the impact of distance and background noise.
Question 2: A bone-anchored hearing aid (BAHA) is best suited for patients with which type of hearing loss?
- Mild sensorineural hearing loss
- Conductive or mixed hearing loss with ear canal abnormalities (Correct answer)
- Profound bilateral sensorineural hearing loss
- Central auditory processing disorder
Correct answer: Conductive or mixed hearing loss with ear canal abnormalities
BAHA devices bypass the outer and middle ear by conducting sound through bone directly to the cochlea, making them ideal for conductive/mixed hearing loss or when ear canals are absent or blocked.
Question 3: What does 'open fit' refer to in modern hearing aid technology?
- A hearing aid with no casing
- A fitting where the ear canal is not fully occluded, allowing natural low-frequency sounds in (Correct answer)
- A hearing aid programmed without testing
- A hearing aid that does not need a mold
Correct answer: A fitting where the ear canal is not fully occluded, allowing natural low-frequency sounds in
Open-fit hearing aids use a small dome or vent that leaves the ear canal mostly open, preventing the occlusion effect and allowing natural sound to enter alongside amplified sound.
Question 4: Directional microphone technology in hearing aids primarily helps users:
- Hear sounds from all directions equally
- Focus on sounds coming from in front while reducing sounds from behind (Correct answer)
- Amplify only low-frequency sounds
- Eliminate feedback
Correct answer: Focus on sounds coming from in front while reducing sounds from behind
Directional microphone systems improve speech understanding in noise by focusing amplification on sounds in front of the listener and attenuating noise coming from other directions.
Question 5: The occlusion effect in hearing aids refers to:
- Feedback from the amplifier
- A hollow or booming quality in one's own voice caused by a blocked ear canal (Correct answer)
- Sound distortion at high volumes
- Battery drain issues
Correct answer: A hollow or booming quality in one's own voice caused by a blocked ear canal
The occlusion effect occurs when a hearing aid or earmold blocks the ear canal, causing low-frequency bone-conducted sounds (like one's own voice) to resonate and sound hollow or boomy.
Question 6: Which assistive listening device (ALD) would be most helpful for a hearing-impaired person watching television at home?
- Cochlear implant
- Personal sound amplifier
- TV streamer or captioning device (Correct answer)
- BAHA device
Correct answer: TV streamer or captioning device
TV streamers wirelessly transmit television audio directly to hearing aids or headphones, while captioning devices display on-screen text, both providing improved TV access for hearing-impaired users.
Hearing Loss Hearing Aids and Assistive Devices Test 2
FM systems used in classrooms work by: