Hearing with both ears

The importance of hearing with both ears

Ears work as a team, and the brain needs both to process speech and locate sound direction.¹ Hearing with both ears is known as binaural hearing. If you can only hear in one ear (unilateral hearing) it’s difficult to perform the tasks listed below.

Understand speech in noise

If you can only hear in one ear it makes it more difficult to pick up on quiet speech in a noisy environment.

Hearing with both ears also makes it easier for your brain to practise selective listening. This means you can focus on the conversations you want to hear.²

Locate sound²

Not being able to tell where sound is coming from may cause problems.

For children, it can be hard to understand the teacher in class or the coach on the sports field.

For adults, driving through traffic can be difficult. For both, crossing a busy road could prove dangerous.

Avoid the head shadow effect

When you can only hear with one ear, sounds that come from your 'bad side' fall in the shadow of your head.

Sounds have to travel around your head so your 'good ear' can send them to the brain. As a result, sounds can be difficult to hear and understand clearly, especially in noise.¹ This is particularly true for higher-frequency sounds.¹

Enjoy music

People who have lost hearing in one ear say they enjoy music less and describe it as sounding unpleasant, indistinct or unnatural, compared to how it sounded with both ears.³

Binaural hearing and speech development in children

Hearing with both ears helps children better understand speech and language. This is important for their learning and development.⁴

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What is bimodal hearing?

For many people, using a cochlear implant on one ear and a hearing aid on the other is the solution that provides them with their best hearing in both ears. This combination is called bimodal hearing.

For the right person, bimodal hearing can provide a better hearing experience than using two hearing aids or a cochlear implant on its own.

When compared to using a hearing aid or cochlear implant alone, users of bimodal hearing report:

• a more natural hearing experience⁵

• improved speech understanding in quiet and noise^6-8

• improved perception of music⁹ 

• better functioning in real-life environments.⁸ 

In a large study, users of bimodal hearing also reported much higher satisfaction with their hearing performance compared to when they previously used two hearing aids.¹⁰

Bilateral hearing: two hearing implants

If you have a bimodal solution but still struggle to understand speech, bilateral hearing implants may improve speech comprehension, which may help you to communicate more effectively.

Children spend most of their waking hours in complex noisy environments.¹¹ To improve speech understanding in noise, as well as localise where sounds are coming from, the brain needs input from both ears. 

Providing both ears with early input ensures the auditory pathways are supported to maximise a child’s development.

Bilaterally implanted children reach hearing performance goals earlier than unilaterally implanted children.¹¹

Your hearing health professional can advise you on bimodal or bilateral hearing treatment options for you or your loved one.

Do you have one ear with a Cochlear™ implant or Baha® device?

Ever thought about getting your other side implanted? If you answered YES to three or more of these questions, an implant in your opposite ear could be right for you:

• Did you have your worst/more deaf ear implanted originally?

• Do you often take off your opposite side hearing aid, as it’s not really helping that much?

• Do you find you need to position people on your implant side to hear? e.g at the dinner table Do you have significant problems hearing in noise?

• Have you been ‘saving’ your non-implanted ear for future technology?