Cochlear Implant or Hearing Aid: What Is the Difference?
A hearing aid and a cochlear implant both help people with hearing loss, but they work in different ways. A hearing aid is worn on or in the ear and makes sounds louder so that the remaining hearing can pick them up. A cochlear implant is a medical device with a part placed by surgery: it bypasses damaged parts of the inner ear and sends signals directly to the hearing nerve.
Hearing aids are used for a wide range of hearing loss. A cochlear implant is usually considered for people with more severe hearing loss who get limited benefit from well-fitted hearing aids. The decision is made after detailed assessment by a specialist implant team.
What is a hearing aid?
A hearing aid is a small electronic device with a microphone, a processor and a speaker (receiver). It picks up sound, processes it according to your hearing test results, and delivers it into the ear. It relies on the inner ear still being able to respond to sound, so it works with the hearing you have. Hearing aids are fitted and adjusted by an audiologist, without surgery. Our guide to hearing aids explains how they work in more detail.
What is a cochlear implant?
A cochlear implant has two main parts:
- An internal part, placed under the skin and into the inner ear (cochlea) during surgery.
- An external sound processor, usually worn behind the ear, which picks up sound and sends it to the internal part.
Instead of making sound louder, the implant turns sound into electrical signals that stimulate the hearing nerve. The brain then learns to interpret these signals as sound. Because this is a different way of hearing, learning to use an implant takes time, practice and regular follow-up.
How do they compare?
How they work
- Hearing aid: amplifies sound for the ear to process.
- Cochlear implant: bypasses damaged parts of the inner ear and stimulates the hearing nerve directly.
Who they are for
- Hearing aid: suitable for many degrees of hearing loss, from mild to severe, depending on the style and power.
- Cochlear implant: usually considered for severe to profound hearing loss when hearing aids give limited benefit, especially for understanding speech.
Procedure
- Hearing aid: no surgery; fitted and programmed in clinic.
- Cochlear implant: requires surgery, then activation and a series of programming sessions, often called mapping.
Adjustment and rehabilitation
- Both need follow-up visits and fine-tuning.
- Implants typically involve a more structured period of listening practice and auditory rehabilitation, particularly for children.
Who is assessed for each?
Anyone with hearing concerns usually starts with a full hearing test. If hearing aids are suitable, the next step is a Danavox hearing aid fitting. If hearing loss is severe and well-fitted hearing aids are not giving enough benefit, an audiologist may suggest referral to a cochlear implant team for detailed evaluation. That team, which typically includes an ear surgeon and audiologists, decides whether an implant is suitable.
Life after implantation
After surgery and activation, people with implants need regular programming and support. At Jordan Hearing & Speech we provide cochlear implant follow-up; you can contact us to ask what it covers. Our articles on cochlear implant follow-up and mapping and auditory rehabilitation explain what this involves. Results vary from person to person, and progress usually depends on many factors, including how long the person has had hearing loss and the support they receive.
When to see a specialist
Book an assessment if you or your child have hearing aids but still struggle to understand speech, if hearing seems to be getting worse, or if you already have a cochlear implant and would like ongoing support through our cochlear implant follow-up service. You can book an appointment or contact us by phone or WhatsApp.
If hearing drops suddenly, see a doctor promptly, as this needs urgent medical attention.
Frequently asked questions
Who is assessed for a cochlear implant?
People with severe to profound hearing loss who get limited benefit from well-fitted hearing aids, particularly in understanding speech, are usually the ones referred for assessment. Both adults and children may be evaluated. A specialist implant team makes the decision after detailed hearing, medical and other assessments.
Can someone use a hearing aid in one ear and an implant in the other?
Yes, this is quite common and is often called a bimodal arrangement. It may be suggested when the ear without an implant still benefits from a hearing aid. The implant team and audiologist decide whether it suits the individual.
Is rehabilitation needed for both?
Both hearing aids and cochlear implants need follow-up and fine-tuning, and many hearing aid users benefit from listening practice too. With cochlear implants, structured auditory rehabilitation is usually an important part of learning to make sense of the new sound signals, especially for children.
Related reading
- Life After Cochlear Implant Activation: Follow-Up and Mapping Explained
- Hearing Aids: A Complete Guide to How They Work and Getting Started
- What Is Auditory Rehabilitation? Learning to Listen With New Hearing Technology
Sources
This article is general information and does not replace advice from a qualified professional.