nd dr en a chil ience ome r ,He lp s s expe phone lt e d adu on th sic, an ng u f t alki ng to m oices o d ni ev ve liste ing th s and lo r hea friend . “BIONIC EAR” ir s the one es im et Som d lle ca Cochlear implants Cochlear implants Offers the hope of regaining or restoring the ability to sense sound for some people who have experienced significant hearing loss.
The cochleaThe cochlea is a snail-shaped,curled tube located in the areaof the ear where nerves arecontained. Its function is to gather electrical signals from sound vibrations and transmit them to your auditory nerve (or hearing nerve).
The hearing nerve .The hearing nerve thensends these signals to thebrain, where theyretranslated into recognizablesounds.
If important parts of the cochlea arent working properly and the hearing nerve isnt being stimulated, theres no way for the electrical signals to get to the brain.Therefore, hearing doesntoccur.
The cochlear implant artificially stimulatesthe inner ear area with electrical signals,sends those signals to the hearing nerve,and allows the user to hear.
The actual cochlear implant consists ofan implant package, which is securedinside the skull, and a sound andspeech processor, which is wornexternally (outside the body). Several components of the cochlear implant work together to receive sound, transfer it to the hearing nerve, and send it to the brain.
The implant package is made up of •A receiver-stimulator that contains all ofthe electronic circuits that control theflow of electrical pulses into the ear.•An antenna that receives the signalsfrom the external sound and speechprocessor•A magnet that holds the external soundand speech processor in place•One wire containing electrodes that areinserted into the cochlea.
The sound and speech processor is aminicomputer that processes sound intodigital information, and then sends thatinformation to the implant package in theform of electrical signals.
The components of the sound and speech processor include:•The actual sound and speech processingdevice•A microphone.•A transmitter that sends the signals to theimplant package.
After having cochlear implant surgery, a child
5 Can a cochlear implantresstore hearing for everyone?
The sound and The sound and speech processor speech processormicrophonemicrophone analyzes the analyzes the The transmitter The transmitter picks up picks up sound and sound and sends the signal sends the signal sound sound converts it into an converts it into an to the implant to the implant electrical signal. electrical signal. package, where package, where its decoded. . its decoded The brain The brain The nerve endings in The nerve endings in interprets the interprets the the cochlea are the cochlea are sound and the sound and the stimulated stimulated person hears. person hears.
Cochlear ImplantSurgery The surgical procedure, which takes 2-4 hours and uses general anesthesia
Will probably be able to go home Will probably be able to go home Will have to wear aadressing over Will have to wear dressing over the next day the next day the implant area for 24 hours the implant area for 24 hoursMay be off-balance or dizzy for aafew daysMay be off-balance or dizzy for few days May experience mild to May experience mild to moderate pain moderate pain