How it works

04-Oct-2003

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In this section of the website, there is a simple and detailed explanation of how the Bionic Ear works, diagrams depicting the components of an Bionic Ear, information about why it allows deaf people to hear, how to wear it and the difference between a hearing aid and Bionic Ear.

 

Simple Explanation:

1)     Sound waves are picked up by the microphone and are then sent to the speech processor.

2)     The processor codes the sounds into an electrical signal which is sent via a cable to the transmitting coil.

3)     The coil passes the signal through the skin to the implant which transforms the signal to electrical pulses.

4)     The pulses pass from the electrode array and stimulate hearing nerve fibres within the cochlea.

Detailed Explanation:

a)     Sounds and speech are detected by the microphone. Implant

b)     The information from the microphone is sent to the speech processor.

c)      The speech processor analyses the information and converts it into an electrical code.

d)     The coded signal travels via a cable to the transmitting coil in the headset. Radio waves from the transmitter coil carry the coded signal through the skin to the implant inside.

e)     The implant decodes the signal. The signal contains information that determines how much electrical current will be sent to the different electrodes.

f)      The appropriate amount of electrical current passes down the appropriate lead wires to the chosen electrodes.

g)     The position of the stimulating electrodes within the cochlea will determine the frequency or pitch of the sounds. The amount of electrical current will determine the loudness of the sounds.

h)     Once the nerve endings in the cochlea are stimulated, the message is sent up to the brain along the hearing nerve. The brain can then try to interpret the stimulation as a meaningful sound.

 

What the Bionic Ear consists of:

 

 

 

 

 

 

 

 

Why it allows the deaf people to hear:

The Bionic Ear allows deaf people to hear because even in the most severely deaf person, there remains some neuronal elements capable of being stimulated. The Bionic Ear or Cochlea Implant replaces the cochlea and picks up the electronic signals sent by the processor. These signals are then sent to the brain by nerve messages from the auditory nerve.

How it is worn:

The difference between a Hearing Aid and an Bionic Ear:

The Hearing Aid and Bionic Ear are 2 completely different devices. The Hearing Aid only helps those who suffer from hearing impairment. It simply amplifies the sounds picked up by the ear.

The Bionic Ear actually is a device that allows people who are deaf to hear again.

However, the Bionic Ear is not suitable for people who are able to use the Hearing Aid because the Hearing Aid provides a much better sound quality.

 

 

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This site was last updated 04-Oct-2003