What’s Actually Happening in the Brain During Tinnitus?
Tinnitus is more than a problem involving the ears. It also involves how the auditory system and brain process and interpret sound, which can result in the perception of ringing, buzzing, humming, or other sounds without an external source. Because the brain plays an important role in how tinnitus is perceived, understanding the neurological processes involved can provide valuable insight into why these sounds may persist.
Led by Dr. Allen Rohe, Tinnitus & Hearing Center of Arizona brings more than 25 years of experience to personalized tinnitus and hearing care. In this article, we explore what happens in the brain during tinnitus, how neural plasticity may influence its persistence, and how modern approaches such as neuromodulation are designed to target relevant neural pathways. Read on to learn more about the connection between tinnitus and the brain and the science behind today's treatment approaches.
How the Auditory System and Brain Process Sound
Understanding tinnitus starts with understanding how the auditory system normally processes sound. Hearing depends on a continuous pathway that carries sound information from the ears to the brain, where those signals are interpreted and given meaning.
From Sound Waves to Neural Signals
Sound begins as vibrations traveling through the air. The outer ear collects and directs these sound waves toward the eardrum, where they are converted into mechanical vibrations. These vibrations pass through the middle ear into the inner ear, where tiny hair cells convert them into electrical signals. The auditory nerve then carries those signals to the brain, where they are processed and interpreted as sound.
The Auditory Cortex and Sound Perception
Once electrical signals reach the brain, the auditory cortex processes and interprets them as sound. In tinnitus, changes in this auditory processing can contribute to the perception of ringing, buzzing, or other sounds even when no corresponding external sound is present. In other words, tinnitus can arise from activity within the brain's auditory pathways rather than from an actual sound in the surrounding environment.
Why the Brain Can Create the Perception of Sound
When auditory input decreases due to hearing loss or damage, normal neural activity shifts. The brain naturally attempts to compensate for the missing sensory information, which can lead to the perception of phantom sounds.
Neural Plasticity and Tinnitus
Neuroplasticity refers to the ability of the brain to reorganize and adapt its structure in response to changes in sensory input. When the auditory system experiences a reduction in normal sound signals, the brain rewires itself to fill the void. These neural adaptations can contribute to persistent tinnitus for some individuals, as the newly formed neural connections continuously misfire and signal sound perception.
Why Tinnitus Can Persist
Tinnitus involves complex communication among the brain's auditory networks and areas associated with attention and emotion. This broader neural involvement helps explain why tinnitus can persist even when hearing loss or other underlying ear-related factors are addressed. Understanding these connections highlights why tinnitus care may require more than evaluating hearing alone, with treatment approaches tailored to the individual's symptoms and underlying factors.
How Neuromodulation Therapy Targets Tinnitus Pathways
Modern therapies for tinnitus aim to address the root of the problem by targeting neural pathways.
What Is Neuromodulation?
Neuromodulation therapy uses carefully controlled sensory stimulation to influence neural activity. By delivering specific patterns of stimulation, this therapy is designed to encourage the brain to rewire itself in a way that can help with symptom management. It may reduce the perceived volume or annoyance of the phantom sounds over time.
Lenire Tinnitus Treatment
Tinnitus & Hearing Center of Arizona offers Lenire, a non-invasive bimodal neuromodulation treatment designed to stimulate auditory and somatosensory pathways simultaneously. This dual stimulation is intended to influence neural activity associated with tinnitus and may help reduce the brain's response to tinnitus sounds over time. As with any treatment, results vary, and Lenire is not guaranteed to eliminate tinnitus or be appropriate for every patient. A qualified provider can evaluate your symptoms and discuss whether this treatment may be a suitable option for you.
Explore Personalized Tinnitus Care in Arizona
Understanding the neurological side of tinnitus can provide helpful context when exploring treatment options. Tinnitus & Hearing Center of Arizona offers personalized tinnitus and hearing care, including comprehensive evaluations, Lenire treatment, and hearing aid fittings. Our team can help you better understand your symptoms and discuss options based on your individual hearing needs.
If you’re looking for guidance on persistent tinnitus, contact our Tempe office to learn more about available care.
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