All About Deafness. Holland High School Deaf Education 2008. Parts of the Ear. Outer Ear. The Outer Ear is the part of the ear that you see. This part of the ear is shaped round so it can send sound to Middle Ear.
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Holland High School
The Outer Ear is the part of the ear that you see.
This part of the ear is shaped round so it can send sound to Middle Ear.
Without the Outer Ear shape-round, we wouldn’t hear as well (the sound could become faint).
The Outer Ear sends sound to the Middle Ear.
Inside the Middle Ear are 3 little bones called the Hammer, the Anvil, and the Stirrup.
The 3 bones are connected to the Ear Drum.
When sound waves come into your Middle Ear, it causes the Ear Drum to vibrate like a drum.
These vibrations can make the 3 little bones move as well.
The Inner Ear (Cochlea) has 3 parts.
In the Center of Ear called Vestube.
Inside Vestube there are little hairs and liquid.
When the ear drum starts to vibrate, the liquid moves and the hair moves to make the message send to the brain through the auditory nerve.
Audiograms inform you of your level of hearing based on a test of various sound frequencies given by an audiologist (hearing doctor).
Your hearing is based on decibels (dB) at each frequency or (Hz-hertz).
To test your hearing - click the link below.
The yellow banana shaped figure represents all the sounds that make up the human voice when speaking at normal conversational levels.
Above is the decibels or dB of sound for each area of hearing.
The audiogram shows the ranges of hearing loss for adults. The ranges that are listed are fairly standard across the United States although some variations do exist.
-10dB to 25dB = Normal range (Grey)
26dB to 40 dB = Mild hearing loss (purple)
41 dB to 55 dB = Moderate hearing loss (red)
56 dB to 70 dB = Moderately Severe hearing loss (green)
71 dB to 90 dB = Severe hearing loss (yellow)
over 90 dB = Profound hearing loss. (blue)
The most common pregnancy-related cause of Deafness was “Prematurity”
Prematurity means that the babies were born too early.
Sometimes, the parts of the body were not developed completely
It can cause hearing loss because the ears were not developed completely
The second most common pregnancy-related cause of Deafness is “Other Pregnancy Complications.”
This is the second most common pregnancy related cause of deafness
The children could become deaf if the pregnant women have any types of symptoms
The third most common pregnancy-related causes is “Cytomegalovirus”
Cytomegalovirus (CMV) is a any of a group of herpes viruses that attack and enlarge epithelial cells. Such viruses also cause a disease of infants characterized by circulatory dysfunction and microcephaly
If pregnant women have CMV then, it could effect the children
If the children receive CMV then, it could cause children mental and physical problems
It can cause hearing loss
The next most common disease to cause Deafness is “Maternal Rubella”
Maternal Rubella is German Measles in a pregnant woman that may cause developmental abnormalities in the fetus when occurring during the first trimester
About 20% of Deaf people are deaf because of Maternal Rubella
It causes the cochlea to be damage really bad.
Post-Natal “Maternal Rubella”
Post-natal means after birth
The most common post-natal cause of Deafness was Otitis Media
Otitis Media or “Glue Ear” is a kind of ear infection that can causes hearing loss
People who have this if the fluid is filling your ear tube too much and can causes continuous ear infections.
The second most common post-natal cause of Deafness is “Meningitis.”
Meningitis can easily kill the children who were born
Meningitis is an infectious disease characterized by inflammation of the meninges (the tissues that surround the brain or spinal cord) usually caused by a bacterial infection; symptoms include headache and stiff neck and fever and nausea
The most common genetic cause of Deafness is “Genetic or “Meningitis.”Syndromic Causes”
About 22% of people who became deaf was because of genetic causes.
The most common of these was Down Syndrome
The second most common Genetic cause for Deafness is “CHARGE Syndrome”
People could have a hearing loss is because their genes were not formed properly
It could cause 4 major conditions and 7 minor conditions.
It a kind of disease that can causes unique Physical features
Sometimes, the person who has disease has different colors of hair and sometimes, their eye color does not match
They could have some white patches on their skin
Measles is an acute infectious disease occurring mostly in children, characterized by catarrhal and febrile symptoms and an eruption of small red spots; rubeola
It can cause deafness in both ears
The Cochlear Implant is a little, complex electronic machine, that can help Deaf or Hard of Hearing people hear the sounds.
The Cochlear Implant is very different from the Hearing Aid.
Cochlear Implant can detected damaged part of the ear and send messages to the nerve.
The Implant sends sound waves to the nerve and then to the brain.
Only Deaf or Hard of Hearing people can receive a Cochlear Implant.
100,000 people in the world have received Implant.
In U.S. 22,000 adults and 15,000 children received a Cochlear Implant.
Under search-type “Cochlear Implant Video”
The first Hearing Aid was invented by a man named Harvey Fletcher who worked for Bell Laboratories.
It was connected with a cord to a case that was attached on the body.
Behind The Ear Aids (BTE) have a little plastic case that fits behind the ear and sends sound waves to the ear using electricity with a wire and mini speaker.
BTE can be useful for children.
ITE (In The Ear Aids) is a machine that fits inside the concha.
Hearing aids must be replaced when children grow.
1. A Microphone for sound.
2. An Electronic Circuit to help increase the sound.
3. A Receiver help send sound to Ear.
4. Batteries for electricity
A visual language used by body and hand movements. ASL is a popular language in the USA and Canada. ASL and English are different because of grammar, plurals, tenses, body expression and fingerspelling.
Deaf and Hard of Hearing learn to listen and communicate using
spoken language. They wear hearing aids and cochlear implants to
help listen. When using Auditory-Verbal, it is very important to provide
extensive counseling, education and support.
Deaf and Hard of Hearing learn to communicate using a system of spoken English and 8
handshapes that represent vowels and consonants. The speak language and use the handshapes to see the unseen sounds.
A sign system used to convey tenses, plurals, possessives and other syntactical forms of English.
MCE system is different than ASL. MCE is used more in public schools.
The children who are deaf and hard of hearing who have been identified with a hearing loss from an early age. They wear hearing aids or cochlear implants that helps them to understand spoken English. They are taught speech (lip reading).
(readlip) try speaking slowly and clearly understand what people say. Deaf person need write noted to hearing person order to communicate.
It is a thing that deaf people can use to communicate with any hearing person. You can bring UbiDuo to anywhere: a restaurant, the police department, and etc.
You can buy two UbiDuos because one hearing person uses this and the Deaf person that you will have to communicate.
The UbiDuo has a full-size keyboard
You can use this for eight hours
It has a rechargeable battery!
The UbiDuo has wireless and you can set the UbiDuo from other UbiDuo up to 500 feet range through the walls or floors!
It has some emoticons that allow to show your feelings and personality in conversations
It costs about $1995.00
This amplifier can be used for hard of hearing and deaf people too
For hard of hearing people, when the phone rings, it can ring loud enough for hard of hearing people
For deaf, they have to set up the strobe light anywhere in their house. Then, when the phone rings, the strobe light will flash really bright to let the deaf people know that someone has to answer the phone now
It costs about $34.95
Sennheiser Set 810/810S Syndrome”
Hearing Aid Sweatbands – Natural Syndrome”
Sonic Boom SB300ss Alarm Clock Syndrome”
IDEA (Individuals with Disabilities Education Act) states that the disabled are to have the same education as the non- disabled. The IDEA was originally enacted by Congress in 1975 . It incorporates FAPE (Free Appropriate Public Education) forstudents with disabilities.
ADA (Americans with Disability Act) gives the disabled equal opportunity as the non-disabled for jobs, state and federal government, public transportation, public accommodations.
ADA law was signed by President George H. W. Bush on July 26, 1990
Legal Rights-NAD provides information to Deaf individuals about their lawful rights.
Advocacy Issues-NAD helps the Deaf to understand how to advocate for themselves.
Info & FAQ’s-NAD gives the Deaf a list of Frequently Asked Questions and various information.
News Room-NAD gives the Deaf more information about:
Inside NAD- describes activities and information about NAD.
DHHC Questions and various information.
Deaf/Hard of Hearing Connection
MADHS is the place for:
DHHS Questions and various information.
Deaf & Hard of Hearing Services
credits Questions and various information.
Seth Tobias Laws and Audiogram
James Tinder Technology and Causes
Rachel Bylsma Communication and Resources
Ronny Howard The Ear and Amplification