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Audiology
Audiologist
• Definition
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Services Offered
• List
of Services
• Hearing
Testing
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Hear Loss / Disorders
• How
We Hear
• What
is Hearing Loss?
• Signs
/ Symptoms
• Communication
Modes
• Tinnitus
• Sensitivity to Loud Sounds
• Dizziness
/ Balance
• Auditory
Processing
• Facial
Paralysis / Testing
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How We Can Help
• Hearing
Aids
• Assistive
Listening
Devices
• Cochlear
Implants
• Middle
Ear Implants
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Links
& Resources
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How We Can Help
Hearing Aids
Hearing Aids and Communication Suggestions
At Arkansas Center for Ear, Nose, Throat & Allergy, our audiologists
offer an exceptionally wide range of hearing aids to meet individual
needs, from very basic technology to the most advanced digital solutions.
These options sweep the full price range from the most economical -
even reconditioned - to top of the line premium instruments.
Technological advances in recent years have expanded our problem-solving
capabilities in terms of helping our patients hear better. More features
and flexibility means more options from which our patients can choose
to meet their individual needs. This section will help to familiarize
you with the styles and technologies that are available.
It is important to remember that each individual has a unique hearing
loss. Therefore, what worked for your friend or relative may not be
appropriate or suitable for you. It is also important to understand
that although hearing aids can be a tremendous help to patients, no
hearing aid can restore normal hearing.
When Choosing a Hearing Aid, the Following Factors
Should Be Considered and Discussed With Your Audiologist:
• Your physical ability to manipulate a hearing aid (i.e. if you
have severe arthritis, you may not want to purchase a very tiny hearing
aid which would have a small battery and a small volume control to manipulate)
• How active you are and the type of lifestyle you lead (i.e.
whether you attend a lot of meetings, are very athletic, and amount
of time you spent in quiet environments vs. in social settings with
background noise)
• Cosmetic preferences
• What you want the hearing aid to do for you (type of circuitry
and special features to help with background noise or the telephone,
for example)
• Expense and financing options (as a rule, most insurance companies
do not cover hearing aids for adults but financing options may be available
to meet your needs)
• Importance of battery life
• Any other medical conditions that may affect your use of the
hearing aid
Why Two Hearing Aids are Almost Always Better
Than One
If you have a hearing loss in both ears, two hearing aids are typically
recommended.
The Benefits of Binaural Amplification (Hearing
From Two Ears Together) are as Follows:
• Purchasing two aids allows you to try listening through both
aids, then just one at a time, to compare and decide what is best for
your hearing and your budget.
• Word understanding is better.
• It is much easier to understand speech in background noise.
• Sounds are more balanced and even.
• You can locate the direction of sound or speech more easily.
• You can wear both hearing aids at a lower volume (about 5 decibels
lower) for greater comfort.
• The ability to wear your aids at a lower volume makes acoustic
feedback (squealing/whistling) less likely.
• Having two hearing aids allows you to have at least one to listen
through if the other is malfunctioning and must be sent for repair.
Hearing Aid Technology
Conventional Hearing Aids
This type of hearing aid is the least expensive category because of
its simple analog (non-digital) circuitry and the fact that it is not
computer-programmable. Patients are able to increase or decrease the
volume, but typically fewer adjustments can be made by the audiologist
to manipulate the sound of the hearing aid than with programmable or
digital hearing aids. Usually the larger the size of the aid, the more
controls can be fit on the aid by the manufacturer for our audiologists
to help maximize benefit from the aid.
Digitally Programmable Analog Aids
These aids have an analog (non-digital) circuit that our audiologists
can program digitally through the computer to change various aspects
of the sound or performance of the hearing aid. Programmable hearing
aids offer more tuning flexibility in a traditional, analog (non-digital)
circuit. This generally allows the audiologist to better accommodate
the hearing loss and hearing-related complaints that patients might
have. Some programmable hearing aids contain more than one listening
program (referred to as multiple memories). This means that patients
can use different listening settings for different listening situations
or environments. This circuitry cost somewhat more than conventional
hearing aids, but is generally less expensive than digital technology.
Digital Hearing Aid Technology
This type of circuitry is typically described as providing the best
sound quality. It offers the most flexibility for audiologists to work
with to fit the individual's loss much more precisely than non-digital
aids. Many digital hearing aids come standard with directional microphones,
which is one of the best features for listening in background noise.
Other features include standard multiple listening programs for different
listening situations, noise cancellation filters and may include feedback
(whistling) management. Most digital hearing aids come standard with
multi-memories. This advanced circuitry costs more than other types
of circuitry but offers tremendous value due to the many advanced features
and more sophisticated sound processing that can help you optimize your
hearing potential.
Hearing Aids with Directional Microphone Technology
This exciting feature is available on many hearing aid styles (sizes)
and levels of technology ranging from lower-priced analog (conventional)
aids through premium digital products. This is the most effective answer
to the problem of difficulty hearing speech in noisy environments (background
noise). When the directional microphone is activated (through a switch,
button or remote control), sounds from the front are emphasized over
the room noise by anywhere from three or four decibels to seven or eight
decibels, depending upon the type of microphone set-up used. This can
help you hear the person you are listening to in a noisy situation much
better, as long as you are facing that person.
Hearing Aids with Special Telephone Options
Some hearing aid wearers need additional help for optimal telephone
use. Either they cannot hear on the telephone because of the degree
of their loss or they cannot use the hearing aid well with the telephone
because putting the phone over the aided ear causes squealing. These
situations can be improved by the use of a hearing aid telecoil, which
is a special feature that can be ordered by our audiologists if you
need it. A telecoil is a special electromagnetic receiver that can pick
up the sound of a telephone when the handset of the phone is held close
to it. When the telecoil is activated (usually by flipping a switch
or pressing a small button on the hearing aid) the hearing aid microphone
is turned off. Then, holding the phone near the aid does not cause squealing
and the phone can be heard more clearly. As noted above, a telecoil
is typically activated by flipping a switch or pressing a button on
the hearing aid but a switchless option is also available.
Hearing Aid Styles
Behind-the-Ear (BTE)
This style of hearing aid consists of an earmold (which delivers the
sound into your ear canal) which is connected to the hearing aid portion
that sits or hangs over (behind) your ear. A well-fit BTE hearing aid
is really very inconspicuous and can be hidden well under the hair.
The actual hearing aid portion can often be purchased to match your
hair color or skin tone, but are also available in fun colors, such
as red, green, blue, yellow, and fuchsia. Today, many types of earmolds
are available that blend in with skin tones. Earmolds can also be ordered
in a variety of fun colors, swirls of different colors and even with
glitter. BTE hearing aids are also commonly fit on young children because
they are somewhat more durable than other hearing aid styles and because
of ear growth issues (remaking just the earmold is less expensive than
remaking an in-the-ear style hearing aid). Other patients prefer BTE
hearing aids because they feel the controls (volume and on/off switch)
are easier to manipulate. These aids are available in sizes from tiny
to large to meet individual hearing needs and cosmetic preference. They
are often surprisingly smaller than most people would expect. Larger
BTEs are available, and are typically required when large amounts of
power (gain) are needed (severe hearing losses). Other patients prefer
BTE hearing aids because they can use the largest size hearing aid battery,
which is easier to change and lasts longer.
Some Reasons to Love BTE Hearing Aids:
• BTEs can sometimes offer better sound quality due to the audiologists'
ability to manipulate more features that affect the sound the aid delivers
to your ear [earmold style, earmold venting options (pressure relief
in the earmold), tonehook options and tubing options]. For example,
if you have good or normal hearing in the low pitches and significantly
greater hearing loss in the high pitches, your audiologist may be able
to fit your loss much more appropriately with a BTE aid. Your audiologist
can use the acoustic modifications that are possible with a BTE aid
to give you amplification where you need it and not deliver unneeded
or unwanted sound in the low pitches where it is not needed. This can
ensure optimal comfort and benefit that sometimes cannot be achieved
as effectively or at all with an in-the-ear fitting.
• More comfortable and more discreet than in-the-ear hearing aids
(especially compared to the largest size in-the-ear style)
• Much less chance of acoustic feedback (squealing) than with
in-the-ear styles
• Greater reliability and lower repair rate because the electronics
of the hearing aid are located far away from the two greatest enemies
of hearing aid reliability: ear wax and moisture from the ear canal
• More sound adjustment controls are available on conventional
BTEs than on ITE styles
• Greater power is available to provide louder sound for persons
who need it
• When your aid must be sent for repair or servicing, a loaner
BTE may be borrowed from our clinic and attached to your personal earmold.
In-The-Ear (ITE)
This style is custom fit to each individual ear and ranges in size from
"full shell" (completely filling the entire "bowl"
of the outer ear) to the tiniest style known as a "completely-in-the
canal" (CIC) aid. You may recall that former President Clinton
used a CIC, while Reagan wore a mini-canal. The other styles in between
are the "half shell" and then going smaller to the "canal."
Each style requires a different sized battery. The smaller the aid you
choose, the smaller the battery. Typically the smaller you go in size
the higher the cost of the hearing aid. Sometimes the amount of hearing
loss prevents patients from choosing the exact style they desire. For
example, someone with a large hearing loss is not a good candidate for
a mini-canal hearing aid. It is just not possible to get the amount
of power needed from such a small device and feedback (whistling) would
also likely be a problem. ITE style hearing aids typically are available
in four different color shades. Sometimes when comparing the outsides
of hearing aids they will look different. This is because not all hearing
aids will have the same features: some will have a volume wheel, or
some hearing aids will have a push-button that changes available listening
programs or a switch for a directional microphone, and still other hearing
aids may have a non-standard type of battery door. Other hearing aids
may have removal handles, trim pots (colored dots that are actually
screws that can be adjusted by your audiologist with a tiny screwdriver
to change the sound quality of the hearing aid) or a switch (called
a telecoil) for compatibility with a telephone. Because this style of
hearing aid is custom made to fit each individual ear, ITEs are usually
not recommended for children since their ears continue to grow until
adulthood causing continual "remakes" of the hearing aid.
CROS Hearing Aids
CROS (Contralateral Routing of signal) hearing aids are designed for
patients with one unaidable ("bad") ear and one ("good")
ear with normal hearing or a mild loss. In this type of set-up, a microphone
is placed over the "bad" ear (this looks like a BTE hearing
aid). The microphone picks up sound, which is then delivered to the
"good" ear via an earmold and BTE type receiver or an ITE
type receiver (which may or may not provide mild amplification depending
upon the hearing in the "good" ear). This system can be completely
wireless, and although it allows patients to hear what is being said
on the "bad" side it does not provide binaural hearing or
true sound localization (ability to tell where sound is coming from).
All sound is received by the "good" ear.
BICROS Hearing Aids
This type of set-up is designed for patients with a "bad"
or "dead" ear (either unaidable or deaf) who also have a hearing
impairment in the better ear. A BICROS picks up sound from the "bad"
ear and delivers it to the "good" ear, but this time with
amplification to the better ear. The receiver on the better ear can
either be a BTE or an ITE.
MULTI-CROS
This system is very similar to a BICROS but also offers the flexibility
of working as just a CROS or just a monaural hearing aid for the better
ear. Each microphone has the capability of either being turned on or
off. This type of hearing aid may be especially useful in situations
where there is a lot of background noise. It allows the user to turn
the microphone off on the side that has a lot of disturbing background
noise.
Disposable Hearing Aids
The development of these hearing aids by a company called Songbird is
similar to the concept of disposable contact lenses. These hearing aids
come in certain standard sizes and various "prescriptions"
are available to fit different losses. They consist of a disposable
aid with a soft ear canal portion that is not custom fit to each individual
ear. The battery in the hearing aid lasts 40 days and the hearing aid
is replaced once the battery dies. While some are very satisfied with
this type of hearing aid, many patients experience discomfort. We do
not currently offer Songbird hearing aids at our clinic.
Frequency Transposition Hearing Aids
This type of hearing aid is for patients with extreme high frequency
hearing loss who have usable hearing in the lower frequencies and cannot
receive benefit from conventional/traditional hearing aids. In this
special type of hearing aid, high frequency sounds are changed by the
hearing aid circuitry into the lower frequencies that the person can
hear. This can provide tremendous relief to the person who cannot otherwise
hear much of anything with a traditional hearing aid. Getting used to
this new way of hearing requires a commitment to wear the aid and work
with learning to hear through it over time.
Body-Worn Hearing Aids
This is an older type of hearing aid that consists of a box-shaped hearing
aid that is kept in a shirt pocket, clipped onto a skirt or pants or
is worn in a pouch. Cords come up from the body aid into an earmold
that fits into one or both ears depending on the loss. Body aids are
sometimes used with young infants and patients with severe or severe
to profound hearing losses.
Although all of these hearing aid styles are different, each hearing
aid contains the same basic parts regardless of size or technology:
• A battery (power source)
• A microphone, which picks up the sound
• An amplifier that magnifies the sound
• A receiver (a miniature speaker), which delivers the amplified
sound to the ear
Realistic Expectations
Having a well-fit hearing aid is crucial when you have hearing loss.
It is important to provide the best possible sound signal for your imperfectly-hearing
ear to process and send to the brain. It is important, though, when
purchasing a hearing aid to understand one important fact: hearing aids
cannot restore hearing to normal or give perfect word understanding.
They put louder sound into a damaged or abnormally functioning auditory
system. This gives a boosted signal which the damaged ear can better
handle, but a damaged system will still send an imperfect signal to
the brain for interpretation no matter how "high tech" the
hearing aid. This is true no matter how optimally we adjust the hearing
aid to the user's needs.
Maximum Benefit From Hearing Aids
In Order to Receive Maximum Benefit From Your
Hearing Aids We Offer The Following Suggestions:
• Wear your hearing aid(s) consistently for most or all of each
day, even at times when you feel there may be nothing you want to hear,
such as quiet times at home. (Some new wearers may need to approach
this goal gradually although some can do this right away.)
• Communicate with your audiologist if you are having any difficulty
or need extra support in using, wearing or listening through your hearing
aids.
• Make a commitment to be patient and persistent with your hearing
aid(s).
• Structure the listening situation to your advantage. The following
communication suggestions are borrowed with permission from Phonak Hearing
Systems, one of the many fine hearing aid companies whose products we
carry:
• When possible, let people know what they can do to make it easier
for you to hear.
• Make sure that people have your attention before they speak.
• Sit or stand closer to the source of what you want to hear,
especially in a group situation where there is background noise
• If you join in a discussion, make sure you know the topic of
conversation. It will help you to follow things better.
• Practice "speech reading." Always watch the person
speaking, and take cues from facial expressions and gestures, as well
as from lip and mouth movements.
• Try to position yourself with the light source behind you. That
way the person you are listening to will be easier to see, rather than
in a shadow.
• In restaurants, request a booth instead of a table. If you do
not have a hearing aid with a directional microphone, try to sit with
your back to a wall so there is less noise behind you.
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