
OpenStax, CC BY 4.0 <https://creativecommons.org/licenses/by/4.0>, via Wikimedia Commons
by Debbie Burke
We often talk here at TKZ about the importance of reading throughout life.
Reading to young children is well recognized to benefit their early brain development.
Reading instructs us through school. It guides us in our daily lives and careers.
Reading keeps the mind sharp as we age.
I just learned a new reason why reading is important: for hearing.
My good friend Dr. Betty Kuffel is my favorite source for medical knowledge. Her husband has profound hearing loss and hearing aids aren’t helping. He will soon have a surgery for a cochlear implant. Betty described the procedure:
An array of electrodes within a thin wire is threaded through a hole drilled through the outer skull and into the cochlea behind and above the ear. The tiny wire follows inner contours of the cochlea with anatomy resembling a snail shell. It bypasses the damaged area reaching the hearing nerve that carries impulses to the brain. Then the surgeon buzzes out a shallow crater of bone for placement of the magnetized device with a microchip in it. Once secured, the scalp is sutured and after a couple of weeks of healing the device is activated. An external rechargeable sound processor with two microphones is worn behind the ear like a typical hearing aid that connects magnetically to the implant. Amazing technology.
BruceBlaus, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
However, the implant isn’t plug and play. The brain has to be retrained to use the device. Instead of the normal neural pathways between the ear (which hears sounds) and the brain (which interprets the meaning and appropriate reaction to those sounds), this rewiring makes new connections.
Here’s the interesting part Betty added:
The training consists of reading aloud as the primary trainer. You see the print, read and the brain processes the visual + verbal input.
In this article, audiologist Grace Sturdivant of the University of Mississippi Medical Center explains two crucial connections between hearing and the brain:
One is called Cross-modal Plasticity. Don’t let that term bog you down – it means that when the area of your brain which is purposed for processing sound (the auditory cortex) is not being stimulated adequately (i.e., when hearing loss is present), a well-functioning system like vision will begin to recruit that area to process its own input.
…the second brain change I’ll discuss is Cortical Resource Reallocation. Even in these mild, sloping hearing loss cases, auditory cortex activity is decreased and frontal lobe activity is increased on listening tasks…The frontal and pre-frontal areas are critical for working memory and executive function. When hearing loss is present and you are straining to hearing and understand someone in a challenging environment, your frontal lobe is loaded down with trying to understand what someone is saying in that moment. We call this “effortful listening.” This leaves less ability for that frontal lobe to help you remember what someone was saying after you walk away from the conversation.
In other words, over time as the ear no longer functions as it’s supposed to, the brain also loses those neural transmission pathways.
Sturdivant expands on the health effects:
…People with severe, untreated hearing loss are five times more likely to develop dementia…adults with untreated hearing loss develop cognitive decline 3.2 years sooner than people with normal hearing; or than people with dementia and severe untreated hearing loss have rates of cognitive decline 30-40% faster than dementia patients with normal hearing.
According to this article from Johns Hopkins Medicine:
Getting used to the cochlear implant takes a while. Eventually, the sound quality will change as the brain learns the stimulation patterns that the device provides. Most patients notice improving sound quality during the first three to 12 months.
This article from Alber Hearing Services outlines some steps in auditory rehabilitation:
Listening to these everyday noises and naming them out loud helps your brain connect the new signals from your implant to what they actually are. Watching TV with captions turned on or following along with lyrics while listening to music can also build stronger connections between sound and meaning.
More rehab techniques from Cochlear Implant Help:
Reading and listening to a fully abridged audio book helps the brain to make the connection between the words heard and words seen. By listening and looking at the words the connection can be made. To make this exercise more challenging, remove the visual and focus on the auditory input. This helps build one’s ability to understand what is being stated.
With sound and visual print correlation, the brain adjusts and soon words are clear and
meaningful. Each person is different but over 80% hearing restoration can be accomplished.
However, the National Institutes of Health reports 29-42% of people with implants express some level of regret.
Of course I’m wishing Betty’s husband an excellent outcome with improved function and no regrets.
I have some hearing loss, but the body adapts in amazing ways. Without being conscious of it, I’ve developed a little skill in lip reading.
Also, for about a year, I’ve been turning on closed captioning for TV and online videos. Will this combination of simultaneously reading and listening help keep my brain working? I don’t know.
But I figure it’s worth a try. Can’t hurt, might help.
~~~
TKZers: Do you think reading helps your hearing? Do you read visually (print books or ebooks)? Do you listen to audiobooks? Or both?











Many believe those who procrastinate are lazy or unmotivated. It can be true of some, I suppose. Most, however, are caught in a torturous loop that stems from the brain. Once you fall prey to these endless cycles, it’s difficult to claw your way out.