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Auditory mismatch negativity is larger during exhalation than inhalation.
Keita Mizuhara1,2,3, Lingjun Li2, Hiroshi Nittono2
1Graduate School of Psychology, Kansai University, Osaka, Japan.
Medicine
|November 29, 2024
Summary
Breathing influences how we process sounds. Auditory deviance detection, measured by mismatch negativity (MMN), was stronger during exhalation, suggesting a link between respiration and auditory perception.
Area of Science:
- Neuroscience
- Auditory Perception
- Psychophysiology
Background:
- Internal bodily signals can alter external sensory processing.
- Previous studies explored cardiac phase effects on auditory processing.
Purpose of the Study:
- To investigate if respiratory phases influence auditory deviance detection.
- To examine mismatch negativity (MMN) responses during different breathing phases.
Main Methods:
- Reanalyzed data from a prior study on cardiac phases and MMN.
- Calculated MMN amplitude for intensity-deviant stimuli during inhalation and exhalation.
- Utilized event-related brain potentials in 37 participants.
Main Results:
- MMN amplitude was significantly larger during exhalation compared to inhalation.
- This difference may stem from increased attention to internal bodily states during exhalation.
Conclusions:
- Respiratory phases demonstrably impact auditory processing.
- Provides evidence for the influence of breathing on the brain's response to external auditory events.
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