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Related Concept Videos

McNemar's Test01:23

McNemar's Test

McNemar's Test is a nonparametric statistical test used to determine if there is a significant difference in proportions between two related groups when the outcome is binary (e.g., yes/no, success/failure). It is beneficial when we have paired data, such as pre-test/post-test designs, where the same subjects are measured under two different conditions. The test is named after the statistician Quinn McNemar, who introduced it in 1947. It is commonly used in situations where subjects are...

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Updated: May 13, 2026

A Low Cost Setup for Behavioral Audiometry in Rodents
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What Do Mismatch Negativity (MMN) Responses Tell Us About Tinnitus?

Ekaterina A Yukhnovich1, Kai Alter2,3, William Sedley2

  • 1Newcastle University Medical School, Newcastle Upon Tyne, NE2 4HH, UK. kate.yukhnovich@newcastle.ac.uk.

Journal of the Association for Research in Otolaryngology : JARO
|December 16, 2024
PubMed
Summary

Mismatch negativity (MMN), an auditory processing measure, shows potential for characterizing tinnitus and hyperacusis traits. However, MMN is not yet a reliable biomarker for tinnitus presence due to variability in study methods and influencing factors.

Keywords:
BiomarkerMMNMismatch negativityPredictive codingReviewTinnitusTinnitus mechanisms

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Area of Science:

  • Auditory Neuroscience
  • Neurophysiology
  • Biomarker Research

Background:

  • Tinnitus lacks a clear biomarker due to heterogeneous causes and symptoms.
  • A proposed 'final pathway' for tinnitus involves altered auditory predictions.
  • Mismatch negativity (MMN) measures prediction violation and is explored as a potential biomarker.

Purpose of the Study:

  • To review studies comparing MMN in tinnitus and non-tinnitus groups.
  • To assess MMN's potential as a specific biomarker for tinnitus presence.

Main Methods:

  • Narrative review of 16 studies comparing MMN between tinnitus and control groups.
  • Analysis of studies with varying MMN paradigms, deviants, and carrier frequencies.
  • Consideration of factors like age, sex, hearing, hyperacusis, attention, and stimulus characteristics.

Main Results:

  • MMN was smaller in tinnitus groups at frequencies remote from tinnitus, but hyperacusis or attention could explain this.
  • Studies using tinnitus-related frequencies showed mixed results, with some MMN patterns potentially linked to hyperacusis.
  • MMN amplitudes are influenced by age, attention, and experimental design, complicating interpretation.

Conclusions:

  • MMN is not currently a specific biomarker for tinnitus presence.
  • MMN shows potential for objectively characterizing auditory processing traits relevant to tinnitus and hyperacusis.