Many people with misophonia describe an immediate and intense reaction to certain sounds. These reactions often feel automatic and out of proportion, which can be difficult to explain to others. A recent brain-based study adds important evidence that misophonia involves differences in how the brain processes sound at a very early stage.
In late 2025, a research team led by Kamalakannan Karupaiah examined how the auditory cortex responds to sound in people with misophonia compared with those without sound sensitivity.
Measuring brain responses to sound
The researchers used a non-invasive brain recording technique that measures electrical activity from the scalp while sounds are played. This method captures very fast brain responses that occur within fractions of a second after a sound is heard.
By recording activity from multiple scalp locations, the researchers could examine not only how strong the brain’s response was, but also where in the brain that activity was most prominent.
Faster and stronger early brain reactions
The study found clear differences between people with misophonia and those without:
Together, these findings suggest that the auditory cortex in misophonia is more reactive and less regulated at an early processing stage.
Different brain activation patterns
Another important finding was that the pattern of brain activation differed between groups. In people with misophonia, activity was more prominent in central and parietal regions of the scalp, whereas people without misophonia showed more typical fronto-central activation.
This indicates that misophonia is associated with different sound-processing pathways, not just stronger emotional responses later on.
Why this matters for understanding misophonia
This study supports several key points that many patients already recognise from experience:
The researchers also suggest that one of the measured brain signals could become a biological marker for misophonia in the future, helping to support diagnosis and monitor treatment response.
What this means for people with misophonia
Although this research does not test treatments directly, it provides strong reassurance that misophonia is rooted in how the brain processes sound, rather than personality, attitude, or coping ability.
It also helps explain why:
Understanding misophonia at this level supports approaches that focus on retraining brain responses rather than forcing exposure or suppression.
What this means for care
At Hashir Tinnitus Clinic, misophonia is approached as a condition involving early auditory processing, emotional networks, and nervous system regulation. Assessment focuses on understanding triggers, reactions, and daily impact so that care can be matched to the underlying pattern rather than symptoms alone.
Research like this strengthens the scientific foundation for compassionate, evidence-based support.
Learn more
If you would like to read the original open-access research paper, it is available here:
Karupaiah, K., Trinesh, R., Uppunda, A. K., & Prabhu, P. (2025). Multichannel auditory cortical responses in misophonia: A neurophysiological investigation. Hearing Research.
https://doi.org/10.1016/j.heares.2025.109458
If misophonia is affecting your daily life and you would like to explore assessment or support options, we are always happy to discuss this with you during an appointment.
