It’s time for the
new perspective in
BrainHearing™

Explore the new perspective in BrainHearing

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The new perspective in

BrainHearing

Oticon has always taken the approach of developing hearing aids that support the brain in how it
makes sense of sound.

At Oticon we walk a certain path – we support the brain in making sense of sound. Rather than only focusing on the ears, we think brain first. It’s a journey of constant discovery – one that we’ve followed for decades – where we explore brain-related territories in audiology. We call this unique thinking BrainHearing.

The latest scientific breakthrough makes it clear that our brains need access to the full sound scene. We need to give the brain more from its surroundings. This breakthrough defines our next step forward – one that will put our vision at the forefront of hearing care and turn the new perspective in BrainHearing into a reality.

Breakthrough:

New science in hearing has shown the brain needs access to the full sound scene in order to work in a natural way

1.

The brain’s hearing centre

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2.

The hearing process

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3.

From hearing problem to brain problem

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4.

The new perspective

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The brain’s hearing centre
comprises two subsystems

Two subsystems work together inside the brain to help the brain make sense of sound:
the orient subsystem and the focus subsystem.*

 

icon_1
Orient subsystem

The orient subsystem always comes first. When we hear, it scans all surrounding sounds – no matter their nature or direction – to create a full perspective of the sound scene. It then creates an overview of the sound objects around us.

icon_1-2Focus subsystem

The focus subsystem helps people select which sounds to listen to. Once we have an overview of the sound objects around us, we use the focus subsystem to identify the sound we want to focus on, listen to or switch attention to, while filtering out irrelevant sounds.

A good neural code is key to
making sense of sound

When sounds reach the inner ear, they are converted into a signal that is sent to the brain. This is what we call the neural code which is sent via the auditory nerve to the brain’s hearing centre – the auditory cortex. There, these neural codes become meaningful sound objects,
which the orient and focus subsystems can use.

 

icon_number_1Orient subsystem

Needs a good neural code to create an overview of the sound objects and begin separating sounds to determine what is going on in the surroundings. This provides the brain with the best conditions to decide what to focus on and listen to.

icon_number_2Focus subsystem

Navigates through the full perspective of the sound scene. It identifies the sound it wants to focus on, listen to or switch attention to, and irrelevant sounds are filtered out.

Two subsystems

working together continuously and simultaneously

While maintaining focus, the brain actually distracts itself on purpose by checking in on the rest of the environment four times every second. This allows our focus hearing to switch attention if something important appears in the sound scene.

When the two subsystems work well together, the rest of the brain can work optimally, which makes it easier to recognize, store and recall sounds, and respond to what is happening.

As depicted in the graphic below, the orient subsystem scans the sound scene and the focus subsystem focuses on sounds of interest.

Sound processing by the brain involves a constant interaction between the orient- and focus subsystems. It is a continuous process that makes sure our present focus is always prioritized.

Continuously and simultaneously

The research behind
the subsystems

Watch our Senior Research Audiologist and Ph.D., Elaine Ng share the insights into the methods behind the recent research.

A limited sound scene can turn a hearing problem into a brain problem

Downgrading input to the brain and failing to treat the hearing loss in the correct way can have a variety of consequences. Some of these include increased listening effort and mental load, reorganized brain function, and an acceleration of cognitive decline and brain volume shrinkage.

 

Hearing problems can becomebrain problems

The brain needs access to the full perspective of the sound scene to work as it should. Not receiving this can lead to brain problems.

Brain problems can becomelife problems

When access to the right input is limited, a hearing problem can lead to serious problems in life.

A hearing problem can become

brain problems

  1. Increased listening effort

    With less sound information, it’s harder for the brain to recognize sounds. It has to fill in the gaps, which requires more listening effort.

  2. Increased mental load

    Having to guess what people are saying and what’s happening increases the mental load on the brain and leaves less mental capacity for remembering and performing.

  3. Reorganized brain functionality

    Without enough stimulation in the hearing centre, the visual centre and other senses start to compensate, which changes the function of the brain.

  4. Accelerated cognitive decline 

    Increased mental load, lack of stimulation and reorganized brain functionality is linked to accelerated cognitive decline, which affects the ability to remember, learn, concentrate, and make decisions.

  5. Accelerated brain volume shrinkage

    All human brains reduce in size with age, but the shrinkage process accelerates when the brain has to work against the natural way it processes sound.

          
Downgrading sound input to the brain and failing to treat the hearing loss in the correct way can have a variety of consequences.**
And so, the brain problems,

can turn into life problems

  1. Social isolation and depression

    People with untreated hearing loss can end up avoiding social gatherings because they’re unable to cope with complex sound environments.

  2. Dementia and Alzheimer’s disease

    The risk for dementia increases five-fold for severe-to-profound hearing loss, three-fold for moderate hearing loss and two-fold for mild hearing loss.

  3. Poor balance and fall-related injuries

    Untreated hearing loss can affect balance, increasing the risk of fall-related injuries three-fold.

                 
A limited sound scene without access to the right input can lead to serious problems in life.***

Risk of
dementia

The risk for dementia with untreated hearing loss is increased five-fold for severe-to-profound hearing loss, three-fold for moderate hearing loss and two-fold for mild hearing loss.

Changing perspective
to change lives

To ensure hearing aids deliver the right input to the brain, they must be able to deliver a good neural code and have access to the full sound scene. Slide to see the new perspective.

Old perspective

Conventional technology suppresses the natural sound input and delivers a poorer quality neural code to the brain

New perspective

The best way to support the natural hearing system is to provide access to the full sound scene to people with hearing loss

When you suppress the sound
scene, you suppress the hearing system

With its directionality, gain reduction, speech prioritization and traditional compression, conventional hearing aid technology restricts people’s access to the full sound scene.

This limiting approach suppresses the natural sound input and delivers a poorer quality neural code to the brain. To treat hearing loss effectively, we need to work with the brain and provide it with the full sound perspective to support the two hearing subsystems.

It's time to

say goodbye to conventional technology

That’s why we need to work with the brain and provide it with the full sound perspective
to support the two hearing subsystems.

When hearing aids suppress sounds, the ears send a poor
neural code to the brain.

Providing the full sound scene supports the natural hearing system

To create the full perspective of sounds and the ability to maintain strong focus, hearing aids must be able to ensure that all relevant sounds are accessible, clear, comfortable and audible in any situation. This will ensure they deliver a good neural code to the brain that it can easily decode. And with a high-quality neural code, people can handle the full sound scene.

The story behind

our BrainHearing philosophy

Our journey to deliver life-changing technology to support the way the brain processes sound naturally.

Oticon has always taken a different path in order to support the brain in how it makes sense of sound. Rather than focusing on sound or the ears, we think brain first. It’s a constant journey of research and discovery, as we, together with Eriksholm Research Centre, explore new scientific audiological territory.

Our latest scientific breakthrough demonstrates that providing the full sound scene is the best support we can provide for the brain to ensure it is able to perform optimally. This breakthrough defines our next step forward – one that will put our vision at the forefront of hearing care and make the new perspective in BrainHearing a reality.

Oticon’s BrainHearing vision

Our BrainHearing technologies are designed to support the brain’s natural sound processing and continue to deliver objectively proven BrainHearing benefits. The timeline shows our most recent innovations towards our vision to create a world where hearing loss is no limitation.

Significant BrainHearing benefits:


  • Enhanced selective attention

  • More speech cues to the brain

  • Improved memory recall

  • Reduced listening effort

  • Improved speech understanding

Like to know more?

Read the dedicated brochure or download the whitepaper to discover even more about BrainHearing

Download brochure

Download whitepaper

* O’Sullivan et al. (2019); Puvvada & Simon (2017).

** 1. Pichora-Fuller, M. K., Kramer, S. E., Eckert, M. A., Edwards, B., Hornsby, B. W., Humes, L. E., ... & Naylor, G. (2016). 2. (Rönnberg, J., Lunner, T., Zekveld, A., Sörqvist, P., Danielsson, H., Lyxell, B., ... & Rudner, M. (2013). 3. Sharma, A., & Glick, H. (2016). 4. Uchida, Y., Sugiura, S., Nishita, Y., Saji, N., Sone, M., & Ueda, H. (2019). 5. Lin FR, Ferrucci L, An Y, Goh JO, Doshi J, Metter EJ, et al.

*** 1. Amieva, H., Ouvrard, C., Meillon, C., Rullier, L., & Dartigues, J. F. (2018). 2. Lin, F. R., & Ferrucci, L. (2012). 3. Lin, F. R., Metter, E. J., O’Brien, R. J., Resnick, S. M., Zonderman, A. B., & Ferrucci, L. (2011).