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19 Cards in this Set

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Hearing Aid Components

Optional Features
Ear Mold
Directional Microphone
Telephone Switch
Direct Auditory Input
Conventional Analog Hearing Aid
Essentially amplifes all sounds (speech and noise) in the same way.
Analog Programmable Hearing Aid
Contains a microchip which allows the audiologis to program the aid for different listening situations
Digital Programmable Hearing Aid
-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
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
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
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
Types of Hearing Aids

In-the-Canal (ITC)
-Natural acoustic properties
-Less visible

-Costly
-Not as powerful
Types of Hearing Aids

Completely in-the-Canal (CIC)
-Invisible
-Easy to use with the telephone

-Costly
-Dexterity required to change the battery
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
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.
Hearing Aid Check

Check Earmold
-Examine for a buildup of wax
-Examine for moisture
-Clean and/or remove moisture, if possible
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.
Cochelar Implant Function
-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
Cochlear Implant Components
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
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
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
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
Visual Assistive Devices
-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