Welcome to Our Blog
by: Alissa Horneland, BC-HIS
What Is Tinnitus?
Tinnitus is the perception of sound — like ringing, buzzing, or humming when no external sound is present. It can come and go, or for some, it becomes a constant companion that affects concentration, sleep, and peace of mind. While many people assume tinnitus starts in the ears, the real story goes much deeper — into the brain’s sound system.
Meet the Thalamus: The Brain’s Sound Gatekeeper
The thalamus sits deep in the center of your brain, just above the brainstem. Think of it as your brain’s filter or switchboard — it decides which sensory signals (like sound, touch, or vision) are important enough to reach your conscious awareness. In a healthy system, the thalamus helps you ignore background noise so you can focus on what matters. But when hearing damage or loss occurs, the thalamus can become overactive, trying to fill in missing sounds. That overactivity creates a false signal, which your brain interprets as a real tone — the hallmark of tinnitus.
The Cortex: Where Sound Is Actually 'Heard'
The auditory cortex, located on the outer layer of your brain above your ears, is where sounds are processed and understood. When the thalamus keeps sending phantom sound signals, the cortex hears them as real, even though nothing is happening in the ear itself. Over time, the thalamus and cortex form a feedback loop, constantly reinforcing the false sound. And because these brain areas also talk to the emotional centers (like the amygdala and limbic system), stress, anxiety, and poor sleep can make tinnitus seem even louder.
Why You 'Hear' a Sound That Isn’t There
Here’s the simplified chain reaction:
- Ear damage or hearing loss → less sound input to the brain.
- Thalamus → turns up the 'volume' to compensate, sending false signals.
- Auditory cortex → interprets those signals as sound.
- Limbic system → emotional stress makes the loop stronger.
So even though tinnitus feels like an ear problem, it’s really a brain perception issue involving the thalamus and cortex.
Calming the Brain: Treatment Approaches
There’s no one-size-fits-all cure, but many treatments help retrain the thalamus and calm the brain’s response:
- Sound Therapy / Hearing Aids – Restores natural sound input, helping the thalamus relax and reducing phantom activity.
- Tinnitus Retraining Therapy (TRT) – Combines counselling with sound therapy to teach the brain to filter out the tinnitus signal.
- Cognitive and Mindfulness Approaches – CBT, meditation, and relaxation techniques quiet the limbic (emotional) response, lowering distress and perceived loudness.
- Neuromodulation Therapies – Emerging treatments like rTMS or bimodal stimulation aim to rebalance brainwave activity between the thalamus and cortex.
- Whole-System Support – Nutrients like magnesium, zinc, and B12, good sleep, hydration, and reducing silence (using background sounds) all help regulate the nervous system.
A Simple Way to Explain It
“Tinnitus happens when the brain’s sound filter (the thalamus) keeps sending a false signal, and the sound center (the cortex) hears it as real.”
At Frequency Hearing
At Frequency Hearing, we help patients understand what’s happening in their brain — not just their ears. Through advanced hearing testing, sound therapy, and personalized counselling, we can help your brain retrain its sound filters and find relief.










