About the Procedure

What to expect: switch on and follow up

During the “switch-on” of the implant, the patient’s implant is programmed by computer, and the first map is created. Electrodes are switched on one by one, and the patient’s response is measured. Responses differ across patients, and are seldom as dramatic as we might see on TV!!

An adult can say out loud when they hear a sound, small babies may cry, and toddlers may blink, or become more still for a time. It often takes 2 sessions to turn all the electrodes on, and the patient needs weekly Mapping sessions after this, to continue gently increasing their exposure to sound.

At this point, adults can receive support in speech perception training and telephone use, while pre-school children and families will work with a speech pathologist in the CIC, to help the child learn to develop listening skills. Therapy sessions are usually weekly for the first 6-12 months, together with a home programme. Support services can be arranged for families who live further away from the clinic. For families with young children, involvement in an Early Intervention Service in the community is also encouraged.

Adjusting to the new sound provided by the cochlear implant device can take many months and can often be frustrating. Over the years of working with patients and their families at the CIC, we have found that motivation, perseverance, and practise are key factors in improving listening and communication skills.

Each patient’s progress is measured on a regular basis to provide data about communication changes following cochlear implant surgery. For more information see What to expect from a Cochlear Implant

Mapping

Mapping is the term given to the measurement and adjustment of electrode frequencies within the implant. At each mapping session, the audiologist works with the patient to determine the softest sounds they can detect, and also to measure and adjust the loudest sounds comfortable for the patient. Over time, maps become more stable and require less adjustment.

  Date Created: Thursday February 19 2004
  Last Updated:  Tuesday July 29 2008
  Authorised By: Director, Audiological Services
  Maintainer: Webmaster, The Bionic Ear Institute
  Email: webmaster@bionicear.org
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