Download

Hearing Assisted Devices

  • Period: to

    Researchers get further information

    Researchers discovered that putting electrical current near the ear could create auditory sensations. They also, learned more about how the cochlea works and found out that electrical energy could be transformed into sound before researching the ear.
  • Period: to

    First Electrode Stimulation

    Scientists Djourno and Eyries for the first time stimulated an acoustic nerve with an electrode and the person whose nerve was being stimulated could hear background noise.
  • Period: to

    Research continued to advance

    It was discovered that specific auditory nerves must be stimulated with electrodes in the cochlea in order to be able to reproduce sound.
  • Period: to

    First people implanted

    Three patients were implanted by Dr. William F. House and recieved some benefit. Dr. House worked with an engineer names Jack Urban to develop the design of the single channel cochlear implant.
  • Period: to

    First Electrodes Placed in Cochlea

    Electrodes were being placed in cochlea with satisfactory results. Research was done with positioning of the electrodes and figuring out which positions gave better results.
  • Period: to

    More Research

    More people were getting single channel implants and research continued. The multichannel device was being developed.
  • Period: to

    Nucleus Multi-channel Cochlear Implant

    The Nucleus Multi-channel Cochlear Implant was introduced and was a great technological improvement to the single channel device.
  • Period: to

    Cochlear Implant Recieves FDA Approval

    FDA approval was given for the implantation in adults. It was not considered experimental anymore.
  • Period: to

    Progress was made in implant technology

    Progress was made in implant technology and in clinical approaches, as well as in speech processors and other parts of the technology. Speech processors were made small enough to be incorporated into a behind the ear hearing aid.
  • Period: to

    Progress continues to be made

    Cochlear implants have become more accepted, more patients are getting them, the risks are decreasing and the technology continues to get better.