Table of Contents
- 1 What is the frequency range of cochlear implants?
- 2 Why is spread of current in cochlear implants a problem?
- 3 How does a cochlear implant work biology?
- 4 What are cochlear implant electrodes made of?
- 5 What made the cochlear implant successful?
- 6 How does the cochlear implant affect the deaf community?
- 7 What factors affect the outcome of cochlear implantation?
- 8 Can static electricity damage a cochlear implant?
What is the frequency range of cochlear implants?
70-350 Hz
In the Medel cochlear implant a frequency range can be set from 70-350 Hz up to3500- 8500 Hz. It is logical to assume that there is best frequency range for speech perception.
Why is spread of current in cochlear implants a problem?
Current spread leads to poor spectral resolution even in implants with smaller and more numerous electrodes. In addition, the similarity in transimpedance values recorded across the four implants suggests that electrode array design did not significantly affect amplitude with the biphasic pulses used.
How do cochlear implants create a technical simulation of natural human hearing?
A cochlear implant converts sound into electrical signals that can be interpreted by the brain. These recordings are simulations of what it’s like to hear sound through a hearing aid and a cochlear implant.
Do cochlear implants replicate normal hearing perfectly?
Cochlear implants allow deaf people to receive and process sounds and speech. However, these devices do not restore normal hearing. They are tools that allow sound and speech to be processed and sent to the brain. A cochlear implant is not right for everyone.
How does a cochlear implant work biology?
The cochlear implant has both external and internal parts. Externally, a battery-powered sound processor is worn behind the ear. The sound processor captures sound and sends electrical signals through the transmitter to the implant, which then stimulate the cochlea’s hearing nerve, sending the impulses to the brain.
What are cochlear implant electrodes made of?
The use of cochlear implants involves the following materials coming into contact with the human body: silicone, platinum, titanium and ceramics. Platinum is used as the electrode contact. For the Teflon-coated wires between the receiver/stimulator and the electrode contacts, platinum/iridium 90/10 is used.
Why is electrode placement important to speech intelligibility in cochlear implant patients?
Hypothesis: Suboptimal cochlear implant (CI) electrode array placement may reduce presentation of coded information to the central nervous system and, consequently, limit speech recognition. These observations suggest significant recipient-dependent factors influence speech reception performance.
Why are cochlear implants controversial quizlet?
Why is a cochlear implant so controversial? Expensive procedure, may result in complete hearing loss, and is offensive to the deaf community.
What made the cochlear implant successful?
The cochlear implant stimulates the nerves directly with electrical currents. Although this stimulation appears to be safe, the long term effect of these electrical currents on the nerves is unknown. May not hear as well as others who have had successful outcomes with their implants.
How does the cochlear implant affect the deaf community?
Some see cochlear implants as a form of oppression from the hearing world and actively protest the technology. Some deaf people who get implants have even been shunned by the deaf community. Others in the community are more open to the technology.
What is a cochlear implant and why would I need one?
Why it’s done. Cochlear implants can improve communication and quality of life for people with severe hearing loss who receive little benefit from hearing aids.
What is the best age to get a cochlear implant for children?
Most children who receive implants are between 2 and 6 years old. Early implantation provides exposure to sounds that can be helpful during the critical period when children learn speech and language skills. In 2000, the FDA lowered the age of eligibility to 12 months for one type of cochlear implant.
What factors affect the outcome of cochlear implantation?
Results vary from person to person. Factors that can affect the outcomes of cochlear implantation include the age when hearing was lost and the length of time between hearing loss and cochlear implantation.
Can static electricity damage a cochlear implant?
Will have to be careful of static electricity. Static electricity may temporarily or permanently damage a cochlear implant. It may be good practice to remove the processor and headset before contact with static generating materials such as children’s plastic play equipment, TV screens, computer monitors, or synthetic fabric.