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19 Cards in this Set
- Front
- Back
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Hearing Aid Components
Optional Features |
Ear Mold
Directional Microphone Telephone Switch Direct Auditory Input |
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Conventional Analog Hearing Aid
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Essentially amplifes all sounds (speech and noise) in the same way.
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Analog Programmable Hearing Aid
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Contains a microchip which allows the audiologis to program the aid for different listening situations
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Digital Programmable Hearing Aid
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-Converts sound into a digital signal
-Analyzes signals in the environment and adjusts automatically -Can be matched more closely to the individual's specific pattern of hearing loss |
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Types of Hearing Aids
Body Type |
-Good for people with handicapping conditions
-And people who do not have adequate neuromuscular control of the head -Big and Bulky -Can be easily disconnected |
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Types of Hearing Aids
Behind-the-Ear (BTE) |
-Don't hear close noise
-Most commonly used with children because they are growing, all you have to change is the earmold -Less bulky than Body Type -Visible -Uncomfortable |
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Types of Hearing Aids
In-the-Ear (ITE) |
-Worn entirely in the ear, less visible
-Less pieces - built in ear mold -Whistling sound (feedback) -Expensive to replace -Not good for dexterity |
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Types of Hearing Aids
In-the-Canal (ITC) |
-Natural acoustic properties
-Less visible -Costly -Not as powerful |
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Types of Hearing Aids
Completely in-the-Canal (CIC) |
-Invisible
-Easy to use with the telephone -Costly -Dexterity required to change the battery |
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Types of Hearing Aids
Bone Conduction |
-Useful for people who have deficits of the ear and would not be able to wear a regular hearing aid.
-Eliminates acoustic feedback -Uncomfortable -Bulky |
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Hearing Aid Check
Listening to a Hearing Aid |
-A child's hearing aid should be checked before each therapy session
Listen to the Hearing Aid by connecting it to a stethoscope. Squeeze and shake the hearing aid to check if it cuts off. Check for cracks in the case, earmold, and tubing. |
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Hearing Aid Check
Check Earmold |
-Examine for a buildup of wax
-Examine for moisture -Clean and/or remove moisture, if possible |
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Hearing Aid Check
Acoustic Feedback (ringing) |
A high-pitched whistling sound sometimes produced by a hearing aid when the instrument is in the ear. The most common cause is a loose-fitting earmold. There is feedback when the sound output from the hearing aid escapes back to the hearing aid microphone.
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Cochelar Implant Function
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-Surgically implanted device
-Bypasses the damaged hair cells of the cochlea in a hearing impaired individual -Provides direct electrical stimulation -Allows for the perception of sound sensation -Serves as an artificial Organ of Corti -Stimulates Sound |
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Cochlear Implant Components
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External
-Microphone -Speech processors- wirelessly or three a wire more people opt for behind the ear -Transmitter - moves sound to internal parts Internal -Receiver -Electrodes- inserted into the cochlea |
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Cochlear Implants
Best Candidates -Adult |
Have to have a significant hearing loss.
-Have a bilateral, severe-profound hearing loss -Have limited benefit from hearing aids -Have no other medical problems -Have a strong desire to communicate through listening, speaking, and speechreading |
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Cochlear Implants
Best Candidates - Children |
-Have bilateral profound hearing loss
-Can have limited benefit from hearing aids -Have no other medical problems -Are, along with his/her parents, willing to be involved in an intensive rehabilitation process -Have support from their edcuational system |
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Assistive Listening Devices
(ALDs) |
-For people who have milder forms of hearing loss
-Lesser forms of hearing aids -FM system -Infrared system- controls volume through infrared -Induction Loop System- kind of like FM, wire around the room -One-to-one communication- headphones, with a boxt that has a microphone and receiver -Telephone amplifying devices -Alerting devices- door bells--> flashing lights |
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Visual Assistive Devices
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-Text telephone- telephone with email on it
-SC Relay Center- for hearing impaired or persons with speech disorders. Uses an operator to speak back and forth. -Computerized speech recognition- Microsoft Word -Closed Caption TV |
